* git-am doesn't strip CRLF line endings when the mbox is base64-encoded
@ 2019-12-18 11:42 George Dunlap
2019-12-18 12:15 ` George Dunlap
0 siblings, 1 reply; 6+ messages in thread
From: George Dunlap @ 2019-12-18 11:42 UTC (permalink / raw)
To: git
[-- Attachment #1: Type: text/plain, Size: 575 bytes --]
Using git 2.24.0 from Debian testing.
It seems that git-am will strip CRLF endings from mails before applying
patches when the mail isn't encoded in any way. It will also decode
base64-encoded mails. But it won't strip CRLF endings from
base64-encoded mails.
Attached are two mbox files for two different recent series.
plainenc.am applies cleanly with `git am`, while base64enc.am doesn't.
Poking around the man pages, it looks like part of the issue might be
that the CRLF stripping is done in `git mailsplit`, before the base64
encoding, rather than after.
-George
[-- Attachment #2: base64enc.am --]
[-- Type: text/plain, Size: 102145 bytes --]
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From: Alexandru Stefan ISAILA <aisaila@bitdefender.com>
To: "xen-devel@lists.xenproject.org" <xen-devel@lists.xenproject.org>
CC: Alexandru Stefan ISAILA <aisaila@bitdefender.com>, Razvan COJOCARU
<rcojocaru@bitdefender.com>, Tamas K Lengyel <tamas@tklengyel.com>, "Petre
Ovidiu PIRCALABU" <ppircalabu@bitdefender.com>, George Dunlap
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<andrew.cooper3@citrix.com>, Wei Liu <wl@xen.org>,
=?utf-8?B?Um9nZXIgUGF1IE1vbm7DqQ==?= <roger.pau@citrix.com>, Jun Nakajima
<jun.nakajima@intel.com>, Kevin Tian <kevin.tian@intel.com>
Subject: [PATCH V4 1/4] x86/mm: Add array_index_nospec to guest provided index
values
Thread-Topic: [PATCH V4 1/4] x86/mm: Add array_index_nospec to guest provided
index values
Thread-Index: AQHVtOxhsG39wuvEP0STO9uvU+j0gQ==
Date: Tue, 17 Dec 2019 15:12:21 +0000
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ICAgICAgICBkLT5hcmNoLmFsdHAybV9lcHRwW2FsdHAybV9pZHhdID09IG1mbl94KElOVkFMSURf
TUZOKSApDQorICAgICAgICAgICAgIGQtPmFyY2guYWx0cDJtX2VwdHBbYXJyYXlfaW5kZXhfbm9z
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cDJtOw0KLS0gDQoyLjE3LjENCg0K
From - Wed Dec 18 10:46:18 2019
Received: from FTLPEX02AMS01.citrite.net (10.13.108.166) by
AMSPEX02CL01.citrite.net (10.69.22.125) with Microsoft SMTP Server (TLS) id
15.0.1473.3 via Mailbox Transport; Tue, 17 Dec 2019 16:12:39 +0100
Received: from LASPEX02MSOL01.citrite.net (10.160.21.45) by
FTLPEX02AMS01.citrite.net (10.13.108.166) with Microsoft SMTP Server (TLS) id
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Received: from esa2.hc3370-68.iphmx.com (10.160.38.12) by
LASPEX02MSOL01.citrite.net (10.160.21.45) with Microsoft SMTP Server (TLS) id
15.0.1473.3 via Frontend Transport; Tue, 17 Dec 2019 07:12:35 -0800
Received-SPF: None (esa2.hc3370-68.iphmx.com: no sender
authenticity information available from domain of
aisaila@bitdefender.com) identity=pra;
client-ip=40.107.5.101; receiver=esa2.hc3370-68.iphmx.com;
envelope-from="aisaila@bitdefender.com";
x-sender="aisaila@bitdefender.com";
x-conformance=sidf_compatible
Received-SPF: Pass (esa2.hc3370-68.iphmx.com: domain of
aisaila@bitdefender.com designates 40.107.5.101 as permitted
sender) identity=mailfrom; client-ip=40.107.5.101;
receiver=esa2.hc3370-68.iphmx.com;
envelope-from="aisaila@bitdefender.com";
x-sender="aisaila@bitdefender.com";
x-conformance=sidf_compatible; x-record-type="v=spf1";
x-record-text="v=spf1 ip4:40.92.0.0/15 ip4:40.107.0.0/16
ip4:52.100.0.0/14 ip4:104.47.0.0/17 ip6:2a01:111:f400::/48
ip6:2a01:111:f403::/48 -all"
Received-SPF: Pass (esa2.hc3370-68.iphmx.com: domain of
postmaster@EUR03-VE1-obe.outbound.protection.outlook.com
designates 40.107.5.101 as permitted sender) identity=helo;
client-ip=40.107.5.101; receiver=esa2.hc3370-68.iphmx.com;
envelope-from="aisaila@bitdefender.com";
x-sender="postmaster@EUR03-VE1-obe.outbound.protection.outlook.com";
x-conformance=sidf_compatible; x-record-type="v=spf1";
x-record-text="v=spf1 ip4:40.92.0.0/15 ip4:40.107.0.0/16
ip4:52.100.0.0/14 ip4:104.47.0.0/17 ip6:2a01:111:f400::/48
ip6:2a01:111:f403::/48 -all"
Authentication-Results: esa2.hc3370-68.iphmx.com; spf=None smtp.pra=aisaila@bitdefender.com; spf=Pass smtp.mailfrom=aisaila@bitdefender.com; spf=Pass smtp.helo=postmaster@EUR03-VE1-obe.outbound.protection.outlook.com; dkim=pass (signature verified) header.i=@bitdefender.onmicrosoft.com
IronPort-SDR: GSSRfHFuftbjDZqjEGNGdGVpHvQ1LO0oONGULXCbprWGSf5zqtGpfGNh7gZy7I/ocm7KQtu568
GktZuqO0lYsp0dsGfbNf684WENRVd0wAYKqN/YMYYP/uNRR1WZbugM7NcZnpedTqjYuegyOVim
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qMLJKQiChWR/KqIKqfysQNmS+hFoTzK8jBE2K9aCAvLXoE11mBv6sHUQfnbHMg9nRIWhFXE2Nd
CyhRSiM0IiDhIWJt5ImuVUdq
X-IronPort-RemoteIP: 40.107.5.101
X-IronPort-MID: 9822597
X-IronPort-Reputation: 3.5
X-IronPort-Listener: InboundMail
X-IronPort-SenderGroup: SBRS_Whitelist
X-IronPort-MailFlowPolicy: $ACCEPTED
X-SBRS: 3.5
X-MesageID: 9822597
X-Ironport-Server: esa2.hc3370-68.iphmx.com
X-Remote-IP: 40.107.5.101
X-Policy: $ACCEPTED
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X-IronPort-Anti-Spam-Filtered: true
X-IronPort-Anti-Spam-Result: =?us-ascii?q?A0GvAQCb7/hdh2UFayhlHgELHINJUIF?=
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X-IronPort-AV: E=Sophos;i="5.69,325,1571716800";
d="scan'208";a="9822597"
X-Amp-Result: SKIPPED(no attachment in message)
X-Amp-File-Uploaded: False
X-IronPort-Outbreak-Status: No, level 0, Unknown - Unknown
X-MGA-submission: =?us-ascii?q?MDEZotQ1MnFS2trojv24rD6d9bmMLY42s+40Cr?=
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From: Alexandru Stefan ISAILA <aisaila@bitdefender.com>
To: "xen-devel@lists.xenproject.org" <xen-devel@lists.xenproject.org>
CC: Alexandru Stefan ISAILA <aisaila@bitdefender.com>, Ian Jackson
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Petre Ovidiu PIRCALABU <ppircalabu@bitdefender.com>
Subject: [PATCH V4 2/4] x86/altp2m: Add hypercall to set a range of sve bits
Thread-Topic: [PATCH V4 2/4] x86/altp2m: Add hypercall to set a range of sve
bits
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Date: Tue, 17 Dec 2019 15:12:31 +0000
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From - Wed Dec 18 10:46:18 2019
Received: from FTLPEX02AMS01.citrite.net (10.13.108.166) by
AMSPEX02CL01.citrite.net (10.69.22.125) with Microsoft SMTP Server (TLS) id
15.0.1473.3 via Mailbox Transport; Tue, 17 Dec 2019 16:12:41 +0100
Received: from LASPEX02MSOL01.citrite.net (10.160.21.45) by
FTLPEX02AMS01.citrite.net (10.13.108.166) with Microsoft SMTP Server (TLS) id
15.0.1473.3; Tue, 17 Dec 2019 10:12:38 -0500
Received: from esa2.hc3370-68.iphmx.com (10.160.38.12) by
LASPEX02MSOL01.citrite.net (10.160.21.45) with Microsoft SMTP Server (TLS) id
15.0.1473.3 via Frontend Transport; Tue, 17 Dec 2019 07:12:38 -0800
Received-SPF: None (esa2.hc3370-68.iphmx.com: no sender
authenticity information available from domain of
aisaila@bitdefender.com) identity=pra;
client-ip=40.107.2.105; receiver=esa2.hc3370-68.iphmx.com;
envelope-from="aisaila@bitdefender.com";
x-sender="aisaila@bitdefender.com";
x-conformance=sidf_compatible
Received-SPF: Pass (esa2.hc3370-68.iphmx.com: domain of
aisaila@bitdefender.com designates 40.107.2.105 as permitted
sender) identity=mailfrom; client-ip=40.107.2.105;
receiver=esa2.hc3370-68.iphmx.com;
envelope-from="aisaila@bitdefender.com";
x-sender="aisaila@bitdefender.com";
x-conformance=sidf_compatible; x-record-type="v=spf1";
x-record-text="v=spf1 ip4:40.92.0.0/15 ip4:40.107.0.0/16
ip4:52.100.0.0/14 ip4:104.47.0.0/17 ip6:2a01:111:f400::/48
ip6:2a01:111:f403::/48 -all"
Received-SPF: Pass (esa2.hc3370-68.iphmx.com: domain of
postmaster@EUR02-VE1-obe.outbound.protection.outlook.com
designates 40.107.2.105 as permitted sender) identity=helo;
client-ip=40.107.2.105; receiver=esa2.hc3370-68.iphmx.com;
envelope-from="aisaila@bitdefender.com";
x-sender="postmaster@EUR02-VE1-obe.outbound.protection.outlook.com";
x-conformance=sidf_compatible; x-record-type="v=spf1";
x-record-text="v=spf1 ip4:40.92.0.0/15 ip4:40.107.0.0/16
ip4:52.100.0.0/14 ip4:104.47.0.0/17 ip6:2a01:111:f400::/48
ip6:2a01:111:f403::/48 -all"
Authentication-Results: esa2.hc3370-68.iphmx.com; spf=None smtp.pra=aisaila@bitdefender.com; spf=Pass smtp.mailfrom=aisaila@bitdefender.com; spf=Pass smtp.helo=postmaster@EUR02-VE1-obe.outbound.protection.outlook.com; dkim=pass (signature verified) header.i=@bitdefender.onmicrosoft.com
IronPort-SDR: PnqSc0B77LeANL3Hw+DGtt/O3/v0Y11DLjGxjQ++t1bxNGDqROWo17u2nW7CEhQ00f0s/7Ee84
fYkLxjf0zQffOURGGvHJledwhb3/WYADU2X19VB+kRFiyF3CufCwYYcAqx8WJY+Nl0Ovk0Zc37
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vtTtF1H/jCRzDA79hWT0X6Jy
X-IronPort-RemoteIP: 40.107.2.105
X-IronPort-MID: 9822605
X-IronPort-Reputation: 3.5
X-IronPort-Listener: InboundMail
X-IronPort-SenderGroup: SBRS_Whitelist
X-IronPort-MailFlowPolicy: $ACCEPTED
X-SBRS: 3.5
X-MesageID: 9822605
X-Ironport-Server: esa2.hc3370-68.iphmx.com
X-Remote-IP: 40.107.2.105
X-Policy: $ACCEPTED
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From: Alexandru Stefan ISAILA <aisaila@bitdefender.com>
To: "xen-devel@lists.xenproject.org" <xen-devel@lists.xenproject.org>
CC: Alexandru Stefan ISAILA <aisaila@bitdefender.com>, Jun Nakajima
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=?utf-8?B?Um9nZXIgUGF1IE1vbm7DqQ==?= <roger.pau@citrix.com>
Subject: [PATCH V4 3/4] x86/mm: Pull out the p2m specifics from
p2m_init_altp2m_ept
Thread-Topic: [PATCH V4 3/4] x86/mm: Pull out the p2m specifics from
p2m_init_altp2m_ept
Thread-Index: AQHVtOxpSoGNE4L+skG6HNN4NefFyg==
Date: Tue, 17 Dec 2019 15:12:34 +0000
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ZXB0KGQsIGlkeCk7DQogDQogIG91dDoNCi0tIA0KMi4xNy4xDQoNCg==
From - Wed Dec 18 10:46:18 2019
Received: from FTLPEX02AMS01.citrite.net (10.13.108.166) by
AMSPEX02CL01.citrite.net (10.69.22.125) with Microsoft SMTP Server (TLS) id
15.0.1473.3 via Mailbox Transport; Tue, 17 Dec 2019 16:12:46 +0100
Received: from LASPEX02MSOL02.citrite.net (10.160.21.46) by
FTLPEX02AMS01.citrite.net (10.13.108.166) with Microsoft SMTP Server (TLS) id
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Received: from esa6.hc3370-68.iphmx.com (10.160.38.12) by
LASPEX02MSOL02.citrite.net (10.160.21.46) with Microsoft SMTP Server (TLS) id
15.0.1473.3 via Frontend Transport; Tue, 17 Dec 2019 07:12:45 -0800
Received-SPF: None (esa6.hc3370-68.iphmx.com: no sender
authenticity information available from domain of
aisaila@bitdefender.com) identity=pra;
client-ip=40.107.2.123; receiver=esa6.hc3370-68.iphmx.com;
envelope-from="aisaila@bitdefender.com";
x-sender="aisaila@bitdefender.com";
x-conformance=sidf_compatible
Received-SPF: Pass (esa6.hc3370-68.iphmx.com: domain of
aisaila@bitdefender.com designates 40.107.2.123 as permitted
sender) identity=mailfrom; client-ip=40.107.2.123;
receiver=esa6.hc3370-68.iphmx.com;
envelope-from="aisaila@bitdefender.com";
x-sender="aisaila@bitdefender.com";
x-conformance=sidf_compatible; x-record-type="v=spf1";
x-record-text="v=spf1 ip4:40.92.0.0/15 ip4:40.107.0.0/16
ip4:52.100.0.0/14 ip4:104.47.0.0/17 ip6:2a01:111:f400::/48
ip6:2a01:111:f403::/48 -all"
Received-SPF: Pass (esa6.hc3370-68.iphmx.com: domain of
postmaster@EUR02-VE1-obe.outbound.protection.outlook.com
designates 40.107.2.123 as permitted sender) identity=helo;
client-ip=40.107.2.123; receiver=esa6.hc3370-68.iphmx.com;
envelope-from="aisaila@bitdefender.com";
x-sender="postmaster@EUR02-VE1-obe.outbound.protection.outlook.com";
x-conformance=sidf_compatible; x-record-type="v=spf1";
x-record-text="v=spf1 ip4:40.92.0.0/15 ip4:40.107.0.0/16
ip4:52.100.0.0/14 ip4:104.47.0.0/17 ip6:2a01:111:f400::/48
ip6:2a01:111:f403::/48 -all"
Authentication-Results: esa6.hc3370-68.iphmx.com; spf=None smtp.pra=aisaila@bitdefender.com; spf=Pass smtp.mailfrom=aisaila@bitdefender.com; spf=Pass smtp.helo=postmaster@EUR02-VE1-obe.outbound.protection.outlook.com; dkim=pass (signature verified) header.i=@bitdefender.onmicrosoft.com
IronPort-SDR: nGAb3eA9Sbc9iZuJr4Fergwi3EVWhqvxtnt563Axx6RJ2qnf8udqFPUPtyGwDiyoEg9ykwyv8A
hXYlT4o/ydC7i4iJCUJ0gOXlsfCjrST7G8D1N2/Qx3gsHKPyE4EsXkQK6Hgx2XE63w9LOiKoh6
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oTArjDzMZAJP1VMeceoDzG5l
X-IronPort-RemoteIP: 40.107.2.123
X-IronPort-MID: 10228222
X-IronPort-Reputation: 3.5
X-IronPort-Listener: InboundMail
X-IronPort-SenderGroup: SBRS_Whitelist
X-IronPort-MailFlowPolicy: $ACCEPTED
X-SBRS: 3.5
X-MesageID: 10228222
X-Ironport-Server: esa6.hc3370-68.iphmx.com
X-Remote-IP: 40.107.2.123
X-Policy: $ACCEPTED
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X-IronPort-AV: E=Sophos;i="5.69,325,1571716800";
d="scan'208";a="10228222"
X-Amp-Result: SKIPPED(no attachment in message)
X-Amp-File-Uploaded: False
X-IronPort-Outbreak-Status: No, level 0, Unknown - Unknown
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From: Alexandru Stefan ISAILA <aisaila@bitdefender.com>
To: "xen-devel@lists.xenproject.org" <xen-devel@lists.xenproject.org>
CC: Alexandru Stefan ISAILA <aisaila@bitdefender.com>, Jan Beulich
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<wl@xen.org>, =?utf-8?B?Um9nZXIgUGF1IE1vbm7DqQ==?= <roger.pau@citrix.com>,
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George Dunlap <george.dunlap@eu.citrix.com>
Subject: [PATCH V4 4/4] x86/mm: Make use of the default access param from
xc_altp2m_create_view
Thread-Topic: [PATCH V4 4/4] x86/mm: Make use of the default access param from
xc_altp2m_create_view
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Date: Tue, 17 Dec 2019 15:12:41 +0000
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From: Juergen Gross <jgross@suse.com>
To: <xen-devel@lists.xenproject.org>
CC: Juergen Gross <jgross@suse.com>, Andrew Cooper
<andrew.cooper3@citrix.com>, George Dunlap <George.Dunlap@eu.citrix.com>, Ian
Jackson <ian.jackson@eu.citrix.com>, Jan Beulich <jbeulich@suse.com>, Julien
Grall <julien@xen.org>, Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
Stefano Stabellini <sstabellini@kernel.org>, "Wei Liu" <wl@xen.org>, Dario
Faggioli <dfaggioli@suse.com>, Josh Whitehead
<josh.whitehead@dornerworks.com>, Stewart Hildebrand
<stewart.hildebrand@dornerworks.com>, Meng Xu <mengxu@cis.upenn.edu>
Subject: [PATCH 1/9] xen/sched: move schedulers and cpupool coding to dedicated directory
Date: Wed, 18 Dec 2019 08:48:51 +0100
Message-ID: <20191218074859.21665-2-jgross@suse.com>
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Move sched*c and cpupool.c to a new directory common/sched.
Signed-off-by: Juergen Gross <jgross@suse.com>
---
MAINTAINERS | 8 +--
xen/common/Kconfig | 66 +---------------------
xen/common/Makefile | 8 +--
xen/common/sched/Kconfig | 65 +++++++++++++++++++++
xen/common/sched/Makefile | 7 +++
.../{compat/schedule.c => sched/compat_schedule.c} | 2 +-
xen/common/{ => sched}/cpupool.c | 0
xen/common/{ => sched}/sched_arinc653.c | 0
xen/common/{ => sched}/sched_credit.c | 0
xen/common/{ => sched}/sched_credit2.c | 0
xen/common/{ => sched}/sched_null.c | 0
xen/common/{ => sched}/sched_rt.c | 0
xen/common/{ => sched}/schedule.c | 2 +-
13 files changed, 80 insertions(+), 78 deletions(-)
create mode 100644 xen/common/sched/Kconfig
create mode 100644 xen/common/sched/Makefile
rename xen/common/{compat/schedule.c => sched/compat_schedule.c} (97%)
rename xen/common/{ => sched}/cpupool.c (100%)
rename xen/common/{ => sched}/sched_arinc653.c (100%)
rename xen/common/{ => sched}/sched_credit.c (100%)
rename xen/common/{ => sched}/sched_credit2.c (100%)
rename xen/common/{ => sched}/sched_null.c (100%)
rename xen/common/{ => sched}/sched_rt.c (100%)
rename xen/common/{ => sched}/schedule.c (99%)
diff --git a/MAINTAINERS b/MAINTAINERS
index 012c847ebd..37d4da2bc2 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -174,7 +174,7 @@ M: Josh Whitehead <josh.whitehead@dornerworks.com>
M: Stewart Hildebrand <stewart.hildebrand@dornerworks.com>
S: Supported
L: DornerWorks Xen-Devel <xen-devel@dornerworks.com>
-F: xen/common/sched_arinc653.c
+F: xen/common/sched/sched_arinc653.c
F: tools/libxc/xc_arinc653.c
ARM (W/ VIRTUALISATION EXTENSIONS) ARCHITECTURE
@@ -212,7 +212,7 @@ CPU POOLS
M: Juergen Gross <jgross@suse.com>
M: Dario Faggioli <dfaggioli@suse.com>
S: Supported
-F: xen/common/cpupool.c
+F: xen/common/sched/cpupool.c
DEVICE TREE
M: Stefano Stabellini <sstabellini@kernel.org>
@@ -378,13 +378,13 @@ RTDS SCHEDULER
M: Dario Faggioli <dfaggioli@suse.com>
M: Meng Xu <mengxu@cis.upenn.edu>
S: Supported
-F: xen/common/sched_rt.c
+F: xen/common/sched/sched_rt.c
SCHEDULING
M: George Dunlap <george.dunlap@eu.citrix.com>
M: Dario Faggioli <dfaggioli@suse.com>
S: Supported
-F: xen/common/sched*
+F: xen/common/sched/
SEABIOS UPSTREAM
M: Wei Liu <wl@xen.org>
diff --git a/xen/common/Kconfig b/xen/common/Kconfig
index 2f516da101..79465fc1f9 100644
--- a/xen/common/Kconfig
+++ b/xen/common/Kconfig
@@ -278,71 +278,7 @@ config ARGO
If unsure, say N.
-menu "Schedulers"
- visible if EXPERT = "y"
-
-config SCHED_CREDIT
- bool "Credit scheduler support"
- default y
- ---help---
- The traditional credit scheduler is a general purpose scheduler.
-
-config SCHED_CREDIT2
- bool "Credit2 scheduler support"
- default y
- ---help---
- The credit2 scheduler is a general purpose scheduler that is
- optimized for lower latency and higher VM density.
-
-config SCHED_RTDS
- bool "RTDS scheduler support (EXPERIMENTAL)"
- default y
- ---help---
- The RTDS scheduler is a soft and firm real-time scheduler for
- multicore, targeted for embedded, automotive, graphics and gaming
- in the cloud, and general low-latency workloads.
-
-config SCHED_ARINC653
- bool "ARINC653 scheduler support (EXPERIMENTAL)"
- default DEBUG
- ---help---
- The ARINC653 scheduler is a hard real-time scheduler for single
- cores, targeted for avionics, drones, and medical devices.
-
-config SCHED_NULL
- bool "Null scheduler support (EXPERIMENTAL)"
- default y
- ---help---
- The null scheduler is a static, zero overhead scheduler,
- for when there always are less vCPUs than pCPUs, typically
- in embedded or HPC scenarios.
-
-choice
- prompt "Default Scheduler?"
- default SCHED_CREDIT2_DEFAULT
-
- config SCHED_CREDIT_DEFAULT
- bool "Credit Scheduler" if SCHED_CREDIT
- config SCHED_CREDIT2_DEFAULT
- bool "Credit2 Scheduler" if SCHED_CREDIT2
- config SCHED_RTDS_DEFAULT
- bool "RT Scheduler" if SCHED_RTDS
- config SCHED_ARINC653_DEFAULT
- bool "ARINC653 Scheduler" if SCHED_ARINC653
- config SCHED_NULL_DEFAULT
- bool "Null Scheduler" if SCHED_NULL
-endchoice
-
-config SCHED_DEFAULT
- string
- default "credit" if SCHED_CREDIT_DEFAULT
- default "credit2" if SCHED_CREDIT2_DEFAULT
- default "rtds" if SCHED_RTDS_DEFAULT
- default "arinc653" if SCHED_ARINC653_DEFAULT
- default "null" if SCHED_NULL_DEFAULT
- default "credit2"
-
-endmenu
+source "common/sched/Kconfig"
config CRYPTO
bool
diff --git a/xen/common/Makefile b/xen/common/Makefile
index 62b34e69e9..2abb8250b0 100644
--- a/xen/common/Makefile
+++ b/xen/common/Makefile
@@ -3,7 +3,6 @@ obj-y += bitmap.o
obj-y += bsearch.o
obj-$(CONFIG_CORE_PARKING) += core_parking.o
obj-y += cpu.o
-obj-y += cpupool.o
obj-$(CONFIG_DEBUG_TRACE) += debugtrace.o
obj-$(CONFIG_HAS_DEVICE_TREE) += device_tree.o
obj-y += domctl.o
@@ -38,12 +37,6 @@ obj-y += radix-tree.o
obj-y += rbtree.o
obj-y += rcupdate.o
obj-y += rwlock.o
-obj-$(CONFIG_SCHED_ARINC653) += sched_arinc653.o
-obj-$(CONFIG_SCHED_CREDIT) += sched_credit.o
-obj-$(CONFIG_SCHED_CREDIT2) += sched_credit2.o
-obj-$(CONFIG_SCHED_RTDS) += sched_rt.o
-obj-$(CONFIG_SCHED_NULL) += sched_null.o
-obj-y += schedule.o
obj-y += shutdown.o
obj-y += softirq.o
obj-y += sort.o
@@ -74,6 +67,7 @@ obj-$(CONFIG_COMPAT) += $(addprefix compat/,domain.o kernel.o memory.o multicall
extra-y := symbols-dummy.o
subdir-$(CONFIG_COVERAGE) += coverage
+subdir-y += sched
subdir-$(CONFIG_UBSAN) += ubsan
subdir-$(CONFIG_NEEDS_LIBELF) += libelf
diff --git a/xen/common/sched/Kconfig b/xen/common/sched/Kconfig
new file mode 100644
index 0000000000..883ac87cab
--- /dev/null
+++ b/xen/common/sched/Kconfig
@@ -0,0 +1,65 @@
+menu "Schedulers"
+ visible if EXPERT = "y"
+
+config SCHED_CREDIT
+ bool "Credit scheduler support"
+ default y
+ ---help---
+ The traditional credit scheduler is a general purpose scheduler.
+
+config SCHED_CREDIT2
+ bool "Credit2 scheduler support"
+ default y
+ ---help---
+ The credit2 scheduler is a general purpose scheduler that is
+ optimized for lower latency and higher VM density.
+
+config SCHED_RTDS
+ bool "RTDS scheduler support (EXPERIMENTAL)"
+ default y
+ ---help---
+ The RTDS scheduler is a soft and firm real-time scheduler for
+ multicore, targeted for embedded, automotive, graphics and gaming
+ in the cloud, and general low-latency workloads.
+
+config SCHED_ARINC653
+ bool "ARINC653 scheduler support (EXPERIMENTAL)"
+ default DEBUG
+ ---help---
+ The ARINC653 scheduler is a hard real-time scheduler for single
+ cores, targeted for avionics, drones, and medical devices.
+
+config SCHED_NULL
+ bool "Null scheduler support (EXPERIMENTAL)"
+ default y
+ ---help---
+ The null scheduler is a static, zero overhead scheduler,
+ for when there always are less vCPUs than pCPUs, typically
+ in embedded or HPC scenarios.
+
+choice
+ prompt "Default Scheduler?"
+ default SCHED_CREDIT2_DEFAULT
+
+ config SCHED_CREDIT_DEFAULT
+ bool "Credit Scheduler" if SCHED_CREDIT
+ config SCHED_CREDIT2_DEFAULT
+ bool "Credit2 Scheduler" if SCHED_CREDIT2
+ config SCHED_RTDS_DEFAULT
+ bool "RT Scheduler" if SCHED_RTDS
+ config SCHED_ARINC653_DEFAULT
+ bool "ARINC653 Scheduler" if SCHED_ARINC653
+ config SCHED_NULL_DEFAULT
+ bool "Null Scheduler" if SCHED_NULL
+endchoice
+
+config SCHED_DEFAULT
+ string
+ default "credit" if SCHED_CREDIT_DEFAULT
+ default "credit2" if SCHED_CREDIT2_DEFAULT
+ default "rtds" if SCHED_RTDS_DEFAULT
+ default "arinc653" if SCHED_ARINC653_DEFAULT
+ default "null" if SCHED_NULL_DEFAULT
+ default "credit2"
+
+endmenu
diff --git a/xen/common/sched/Makefile b/xen/common/sched/Makefile
new file mode 100644
index 0000000000..359af4f8bb
--- /dev/null
+++ b/xen/common/sched/Makefile
@@ -0,0 +1,7 @@
+obj-y += cpupool.o
+obj-$(CONFIG_SCHED_ARINC653) += sched_arinc653.o
+obj-$(CONFIG_SCHED_CREDIT) += sched_credit.o
+obj-$(CONFIG_SCHED_CREDIT2) += sched_credit2.o
+obj-$(CONFIG_SCHED_RTDS) += sched_rt.o
+obj-$(CONFIG_SCHED_NULL) += sched_null.o
+obj-y += schedule.o
diff --git a/xen/common/compat/schedule.c b/xen/common/sched/compat_schedule.c
similarity index 97%
rename from xen/common/compat/schedule.c
rename to xen/common/sched/compat_schedule.c
index 8b6e6f107d..2e450685d6 100644
--- a/xen/common/compat/schedule.c
+++ b/xen/common/sched/compat_schedule.c
@@ -37,7 +37,7 @@ static int compat_poll(struct compat_sched_poll *compat)
#define do_poll compat_poll
#define sched_poll compat_sched_poll
-#include "../schedule.c"
+#include "schedule.c"
int compat_set_timer_op(u32 lo, s32 hi)
{
diff --git a/xen/common/cpupool.c b/xen/common/sched/cpupool.c
similarity index 100%
rename from xen/common/cpupool.c
rename to xen/common/sched/cpupool.c
diff --git a/xen/common/sched_arinc653.c b/xen/common/sched/sched_arinc653.c
similarity index 100%
rename from xen/common/sched_arinc653.c
rename to xen/common/sched/sched_arinc653.c
diff --git a/xen/common/sched_credit.c b/xen/common/sched/sched_credit.c
similarity index 100%
rename from xen/common/sched_credit.c
rename to xen/common/sched/sched_credit.c
diff --git a/xen/common/sched_credit2.c b/xen/common/sched/sched_credit2.c
similarity index 100%
rename from xen/common/sched_credit2.c
rename to xen/common/sched/sched_credit2.c
diff --git a/xen/common/sched_null.c b/xen/common/sched/sched_null.c
similarity index 100%
rename from xen/common/sched_null.c
rename to xen/common/sched/sched_null.c
diff --git a/xen/common/sched_rt.c b/xen/common/sched/sched_rt.c
similarity index 100%
rename from xen/common/sched_rt.c
rename to xen/common/sched/sched_rt.c
diff --git a/xen/common/schedule.c b/xen/common/sched/schedule.c
similarity index 99%
rename from xen/common/schedule.c
rename to xen/common/sched/schedule.c
index e70cc70a65..a550dd8f93 100644
--- a/xen/common/schedule.c
+++ b/xen/common/sched/schedule.c
@@ -3125,7 +3125,7 @@ void __init sched_setup_dom0_vcpus(struct domain *d)
#endif
#ifdef CONFIG_COMPAT
-#include "compat/schedule.c"
+#include "compat_schedule.c"
#endif
#endif /* !COMPAT */
--
2.16.4
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From: Juergen Gross <jgross@suse.com>
To: <xen-devel@lists.xenproject.org>
CC: Juergen Gross <jgross@suse.com>, Jan Beulich <jbeulich@suse.com>, "Andrew
Cooper" <andrew.cooper3@citrix.com>, Wei Liu <wl@xen.org>,
=?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= <roger.pau@citrix.com>, George Dunlap
<George.Dunlap@eu.citrix.com>, Ian Jackson <ian.jackson@eu.citrix.com>,
Julien Grall <julien@xen.org>, Konrad Rzeszutek Wilk
<konrad.wilk@oracle.com>, Stefano Stabellini <sstabellini@kernel.org>, "Dario
Faggioli" <dfaggioli@suse.com>, Josh Whitehead
<josh.whitehead@dornerworks.com>, Stewart Hildebrand
<stewart.hildebrand@dornerworks.com>, Meng Xu <mengxu@cis.upenn.edu>
Subject: [PATCH 2/9] xen/sched: make sched-if.h really scheduler private
Date: Wed, 18 Dec 2019 08:48:52 +0100
Message-ID: <20191218074859.21665-3-jgross@suse.com>
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include/xen/sched-if.h should be private to scheduler code, so move it
to common/sched/sched-if.h and move the remaining use cases to
cpupool.c and schedule.c.
Signed-off-by: Juergen Gross <jgross@suse.com>
---
xen/arch/x86/dom0_build.c | 5 +-
xen/common/domain.c | 70 ----------
xen/common/domctl.c | 135 +------------------
xen/common/sched/cpupool.c | 13 +-
xen/{include/xen => common/sched}/sched-if.h | 3 -
xen/common/sched/sched_arinc653.c | 3 +-
xen/common/sched/sched_credit.c | 2 +-
xen/common/sched/sched_credit2.c | 3 +-
xen/common/sched/sched_null.c | 3 +-
xen/common/sched/sched_rt.c | 3 +-
xen/common/sched/schedule.c | 191 ++++++++++++++++++++++++++-
xen/include/xen/domain.h | 3 +
xen/include/xen/sched.h | 7 +
13 files changed, 228 insertions(+), 213 deletions(-)
rename xen/{include/xen => common/sched}/sched-if.h (99%)
diff --git a/xen/arch/x86/dom0_build.c b/xen/arch/x86/dom0_build.c
index 28b964e018..56c2dee0fc 100644
--- a/xen/arch/x86/dom0_build.c
+++ b/xen/arch/x86/dom0_build.c
@@ -9,7 +9,6 @@
#include <xen/libelf.h>
#include <xen/pfn.h>
#include <xen/sched.h>
-#include <xen/sched-if.h>
#include <xen/softirq.h>
#include <asm/amd.h>
@@ -227,9 +226,9 @@ unsigned int __init dom0_max_vcpus(void)
dom0_nodes = node_online_map;
for_each_node_mask ( node, dom0_nodes )
cpumask_or(&dom0_cpus, &dom0_cpus, &node_to_cpumask(node));
- cpumask_and(&dom0_cpus, &dom0_cpus, cpupool0->cpu_valid);
+ cpumask_and(&dom0_cpus, &dom0_cpus, cpupool_valid_cpus(cpupool0));
if ( cpumask_empty(&dom0_cpus) )
- cpumask_copy(&dom0_cpus, cpupool0->cpu_valid);
+ cpumask_copy(&dom0_cpus, cpupool_valid_cpus(cpupool0));
max_vcpus = cpumask_weight(&dom0_cpus);
if ( opt_dom0_max_vcpus_min > max_vcpus )
diff --git a/xen/common/domain.c b/xen/common/domain.c
index 611116c7fc..f4f0a66262 100644
--- a/xen/common/domain.c
+++ b/xen/common/domain.c
@@ -10,7 +10,6 @@
#include <xen/ctype.h>
#include <xen/err.h>
#include <xen/sched.h>
-#include <xen/sched-if.h>
#include <xen/domain.h>
#include <xen/mm.h>
#include <xen/event.h>
@@ -565,75 +564,6 @@ void __init setup_system_domains(void)
#endif
}
-void domain_update_node_affinity(struct domain *d)
-{
- cpumask_var_t dom_cpumask, dom_cpumask_soft;
- cpumask_t *dom_affinity;
- const cpumask_t *online;
- struct sched_unit *unit;
- unsigned int cpu;
-
- /* Do we have vcpus already? If not, no need to update node-affinity. */
- if ( !d->vcpu || !d->vcpu[0] )
- return;
-
- if ( !zalloc_cpumask_var(&dom_cpumask) )
- return;
- if ( !zalloc_cpumask_var(&dom_cpumask_soft) )
- {
- free_cpumask_var(dom_cpumask);
- return;
- }
-
- online = cpupool_domain_master_cpumask(d);
-
- spin_lock(&d->node_affinity_lock);
-
- /*
- * If d->auto_node_affinity is true, let's compute the domain's
- * node-affinity and update d->node_affinity accordingly. if false,
- * just leave d->auto_node_affinity alone.
- */
- if ( d->auto_node_affinity )
- {
- /*
- * We want the narrowest possible set of pcpus (to get the narowest
- * possible set of nodes). What we need is the cpumask of where the
- * domain can run (the union of the hard affinity of all its vcpus),
- * and the full mask of where it would prefer to run (the union of
- * the soft affinity of all its various vcpus). Let's build them.
- */
- for_each_sched_unit ( d, unit )
- {
- cpumask_or(dom_cpumask, dom_cpumask, unit->cpu_hard_affinity);
- cpumask_or(dom_cpumask_soft, dom_cpumask_soft,
- unit->cpu_soft_affinity);
- }
- /* Filter out non-online cpus */
- cpumask_and(dom_cpumask, dom_cpumask, online);
- ASSERT(!cpumask_empty(dom_cpumask));
- /* And compute the intersection between hard, online and soft */
- cpumask_and(dom_cpumask_soft, dom_cpumask_soft, dom_cpumask);
-
- /*
- * If not empty, the intersection of hard, soft and online is the
- * narrowest set we want. If empty, we fall back to hard&online.
- */
- dom_affinity = cpumask_empty(dom_cpumask_soft) ?
- dom_cpumask : dom_cpumask_soft;
-
- nodes_clear(d->node_affinity);
- for_each_cpu ( cpu, dom_affinity )
- node_set(cpu_to_node(cpu), d->node_affinity);
- }
-
- spin_unlock(&d->node_affinity_lock);
-
- free_cpumask_var(dom_cpumask_soft);
- free_cpumask_var(dom_cpumask);
-}
-
-
int domain_set_node_affinity(struct domain *d, const nodemask_t *affinity)
{
/* Being disjoint with the system is just wrong. */
diff --git a/xen/common/domctl.c b/xen/common/domctl.c
index 03d0226039..3407db44fd 100644
--- a/xen/common/domctl.c
+++ b/xen/common/domctl.c
@@ -11,7 +11,6 @@
#include <xen/err.h>
#include <xen/mm.h>
#include <xen/sched.h>
-#include <xen/sched-if.h>
#include <xen/domain.h>
#include <xen/event.h>
#include <xen/grant_table.h>
@@ -65,9 +64,9 @@ static int bitmap_to_xenctl_bitmap(struct xenctl_bitmap *xenctl_bitmap,
return err;
}
-static int xenctl_bitmap_to_bitmap(unsigned long *bitmap,
- const struct xenctl_bitmap *xenctl_bitmap,
- unsigned int nbits)
+int xenctl_bitmap_to_bitmap(unsigned long *bitmap,
+ const struct xenctl_bitmap *xenctl_bitmap,
+ unsigned int nbits)
{
unsigned int guest_bytes, copy_bytes;
int err = 0;
@@ -200,7 +199,7 @@ void getdomaininfo(struct domain *d, struct xen_domctl_getdomaininfo *info)
info->shared_info_frame = mfn_to_gmfn(d, virt_to_mfn(d->shared_info));
BUG_ON(SHARED_M2P(info->shared_info_frame));
- info->cpupool = d->cpupool ? d->cpupool->cpupool_id : CPUPOOLID_NONE;
+ info->cpupool = cpupool_get_id(d);
memcpy(info->handle, d->handle, sizeof(xen_domain_handle_t));
@@ -234,16 +233,6 @@ void domctl_lock_release(void)
spin_unlock(¤t->domain->hypercall_deadlock_mutex);
}
-static inline
-int vcpuaffinity_params_invalid(const struct xen_domctl_vcpuaffinity *vcpuaff)
-{
- return vcpuaff->flags == 0 ||
- ((vcpuaff->flags & XEN_VCPUAFFINITY_HARD) &&
- guest_handle_is_null(vcpuaff->cpumap_hard.bitmap)) ||
- ((vcpuaff->flags & XEN_VCPUAFFINITY_SOFT) &&
- guest_handle_is_null(vcpuaff->cpumap_soft.bitmap));
-}
-
void vnuma_destroy(struct vnuma_info *vnuma)
{
if ( vnuma )
@@ -608,122 +597,8 @@ long do_domctl(XEN_GUEST_HANDLE_PARAM(xen_domctl_t) u_domctl)
case XEN_DOMCTL_setvcpuaffinity:
case XEN_DOMCTL_getvcpuaffinity:
- {
- struct vcpu *v;
- const struct sched_unit *unit;
- struct xen_domctl_vcpuaffinity *vcpuaff = &op->u.vcpuaffinity;
-
- ret = -EINVAL;
- if ( vcpuaff->vcpu >= d->max_vcpus )
- break;
-
- ret = -ESRCH;
- if ( (v = d->vcpu[vcpuaff->vcpu]) == NULL )
- break;
-
- unit = v->sched_unit;
- ret = -EINVAL;
- if ( vcpuaffinity_params_invalid(vcpuaff) )
- break;
-
- if ( op->cmd == XEN_DOMCTL_setvcpuaffinity )
- {
- cpumask_var_t new_affinity, old_affinity;
- cpumask_t *online = cpupool_domain_master_cpumask(v->domain);
-
- /*
- * We want to be able to restore hard affinity if we are trying
- * setting both and changing soft affinity (which happens later,
- * when hard affinity has been succesfully chaged already) fails.
- */
- if ( !alloc_cpumask_var(&old_affinity) )
- {
- ret = -ENOMEM;
- break;
- }
- cpumask_copy(old_affinity, unit->cpu_hard_affinity);
-
- if ( !alloc_cpumask_var(&new_affinity) )
- {
- free_cpumask_var(old_affinity);
- ret = -ENOMEM;
- break;
- }
-
- /* Undo a stuck SCHED_pin_override? */
- if ( vcpuaff->flags & XEN_VCPUAFFINITY_FORCE )
- vcpu_temporary_affinity(v, NR_CPUS, VCPU_AFFINITY_OVERRIDE);
-
- ret = 0;
-
- /*
- * We both set a new affinity and report back to the caller what
- * the scheduler will be effectively using.
- */
- if ( vcpuaff->flags & XEN_VCPUAFFINITY_HARD )
- {
- ret = xenctl_bitmap_to_bitmap(cpumask_bits(new_affinity),
- &vcpuaff->cpumap_hard,
- nr_cpu_ids);
- if ( !ret )
- ret = vcpu_set_hard_affinity(v, new_affinity);
- if ( ret )
- goto setvcpuaffinity_out;
-
- /*
- * For hard affinity, what we return is the intersection of
- * cpupool's online mask and the new hard affinity.
- */
- cpumask_and(new_affinity, online, unit->cpu_hard_affinity);
- ret = cpumask_to_xenctl_bitmap(&vcpuaff->cpumap_hard,
- new_affinity);
- }
- if ( vcpuaff->flags & XEN_VCPUAFFINITY_SOFT )
- {
- ret = xenctl_bitmap_to_bitmap(cpumask_bits(new_affinity),
- &vcpuaff->cpumap_soft,
- nr_cpu_ids);
- if ( !ret)
- ret = vcpu_set_soft_affinity(v, new_affinity);
- if ( ret )
- {
- /*
- * Since we're returning error, the caller expects nothing
- * happened, so we rollback the changes to hard affinity
- * (if any).
- */
- if ( vcpuaff->flags & XEN_VCPUAFFINITY_HARD )
- vcpu_set_hard_affinity(v, old_affinity);
- goto setvcpuaffinity_out;
- }
-
- /*
- * For soft affinity, we return the intersection between the
- * new soft affinity, the cpupool's online map and the (new)
- * hard affinity.
- */
- cpumask_and(new_affinity, new_affinity, online);
- cpumask_and(new_affinity, new_affinity,
- unit->cpu_hard_affinity);
- ret = cpumask_to_xenctl_bitmap(&vcpuaff->cpumap_soft,
- new_affinity);
- }
-
- setvcpuaffinity_out:
- free_cpumask_var(new_affinity);
- free_cpumask_var(old_affinity);
- }
- else
- {
- if ( vcpuaff->flags & XEN_VCPUAFFINITY_HARD )
- ret = cpumask_to_xenctl_bitmap(&vcpuaff->cpumap_hard,
- unit->cpu_hard_affinity);
- if ( vcpuaff->flags & XEN_VCPUAFFINITY_SOFT )
- ret = cpumask_to_xenctl_bitmap(&vcpuaff->cpumap_soft,
- unit->cpu_soft_affinity);
- }
+ ret = vcpu_affinity_domctl(d, op->cmd, &op->u.vcpuaffinity);
break;
- }
case XEN_DOMCTL_scheduler_op:
ret = sched_adjust(d, &op->u.scheduler_op);
diff --git a/xen/common/sched/cpupool.c b/xen/common/sched/cpupool.c
index 4d3adbdd8d..d5b64d0a6a 100644
--- a/xen/common/sched/cpupool.c
+++ b/xen/common/sched/cpupool.c
@@ -16,11 +16,12 @@
#include <xen/cpumask.h>
#include <xen/percpu.h>
#include <xen/sched.h>
-#include <xen/sched-if.h>
#include <xen/warning.h>
#include <xen/keyhandler.h>
#include <xen/cpu.h>
+#include "sched-if.h"
+
#define for_each_cpupool(ptr) \
for ((ptr) = &cpupool_list; *(ptr) != NULL; (ptr) = &((*(ptr))->next))
@@ -876,6 +877,16 @@ int cpupool_do_sysctl(struct xen_sysctl_cpupool_op *op)
return ret;
}
+int cpupool_get_id(const struct domain *d)
+{
+ return d->cpupool ? d->cpupool->cpupool_id : CPUPOOLID_NONE;
+}
+
+cpumask_t *cpupool_valid_cpus(struct cpupool *pool)
+{
+ return pool->cpu_valid;
+}
+
void dump_runq(unsigned char key)
{
unsigned long flags;
diff --git a/xen/include/xen/sched-if.h b/xen/common/sched/sched-if.h
similarity index 99%
rename from xen/include/xen/sched-if.h
rename to xen/common/sched/sched-if.h
index b0ac54e63d..a702fd23b1 100644
--- a/xen/include/xen/sched-if.h
+++ b/xen/common/sched/sched-if.h
@@ -12,9 +12,6 @@
#include <xen/err.h>
#include <xen/rcupdate.h>
-/* A global pointer to the initial cpupool (POOL0). */
-extern struct cpupool *cpupool0;
-
/* cpus currently in no cpupool */
extern cpumask_t cpupool_free_cpus;
diff --git a/xen/common/sched/sched_arinc653.c b/xen/common/sched/sched_arinc653.c
index 565575c326..fe15754900 100644
--- a/xen/common/sched/sched_arinc653.c
+++ b/xen/common/sched/sched_arinc653.c
@@ -26,7 +26,6 @@
#include <xen/lib.h>
#include <xen/sched.h>
-#include <xen/sched-if.h>
#include <xen/timer.h>
#include <xen/softirq.h>
#include <xen/time.h>
@@ -35,6 +34,8 @@
#include <xen/guest_access.h>
#include <public/sysctl.h>
+#include "sched-if.h"
+
/**************************************************************************
* Private Macros *
**************************************************************************/
diff --git a/xen/common/sched/sched_credit.c b/xen/common/sched/sched_credit.c
index aa41a3301b..a098ca0f3a 100644
--- a/xen/common/sched/sched_credit.c
+++ b/xen/common/sched/sched_credit.c
@@ -15,7 +15,6 @@
#include <xen/delay.h>
#include <xen/event.h>
#include <xen/time.h>
-#include <xen/sched-if.h>
#include <xen/softirq.h>
#include <asm/atomic.h>
#include <asm/div64.h>
@@ -24,6 +23,7 @@
#include <xen/trace.h>
#include <xen/err.h>
+#include "sched-if.h"
/*
* Locking:
diff --git a/xen/common/sched/sched_credit2.c b/xen/common/sched/sched_credit2.c
index f7c477053c..5bfe1441a2 100644
--- a/xen/common/sched/sched_credit2.c
+++ b/xen/common/sched/sched_credit2.c
@@ -18,7 +18,6 @@
#include <xen/event.h>
#include <xen/time.h>
#include <xen/perfc.h>
-#include <xen/sched-if.h>
#include <xen/softirq.h>
#include <asm/div64.h>
#include <xen/errno.h>
@@ -26,6 +25,8 @@
#include <xen/cpu.h>
#include <xen/keyhandler.h>
+#include "sched-if.h"
+
/* Meant only for helping developers during debugging. */
/* #define d2printk printk */
#define d2printk(x...)
diff --git a/xen/common/sched/sched_null.c b/xen/common/sched/sched_null.c
index 3f3418c9b1..5a23a7e7dc 100644
--- a/xen/common/sched/sched_null.c
+++ b/xen/common/sched/sched_null.c
@@ -29,10 +29,11 @@
*/
#include <xen/sched.h>
-#include <xen/sched-if.h>
#include <xen/softirq.h>
#include <xen/trace.h>
+#include "sched-if.h"
+
/*
* null tracing events. Check include/public/trace.h for more details.
*/
diff --git a/xen/common/sched/sched_rt.c b/xen/common/sched/sched_rt.c
index b2b29481f3..379b56bc2a 100644
--- a/xen/common/sched/sched_rt.c
+++ b/xen/common/sched/sched_rt.c
@@ -20,7 +20,6 @@
#include <xen/time.h>
#include <xen/timer.h>
#include <xen/perfc.h>
-#include <xen/sched-if.h>
#include <xen/softirq.h>
#include <asm/atomic.h>
#include <xen/errno.h>
@@ -31,6 +30,8 @@
#include <xen/err.h>
#include <xen/guest_access.h>
+#include "sched-if.h"
+
/*
* TODO:
*
diff --git a/xen/common/sched/schedule.c b/xen/common/sched/schedule.c
index a550dd8f93..c751faa741 100644
--- a/xen/common/sched/schedule.c
+++ b/xen/common/sched/schedule.c
@@ -23,7 +23,6 @@
#include <xen/time.h>
#include <xen/timer.h>
#include <xen/perfc.h>
-#include <xen/sched-if.h>
#include <xen/softirq.h>
#include <xen/trace.h>
#include <xen/mm.h>
@@ -38,6 +37,8 @@
#include <xsm/xsm.h>
#include <xen/err.h>
+#include "sched-if.h"
+
#ifdef CONFIG_XEN_GUEST
#include <asm/guest.h>
#else
@@ -1607,6 +1608,194 @@ int vcpu_temporary_affinity(struct vcpu *v, unsigned int cpu, uint8_t reason)
return ret;
}
+static inline
+int vcpuaffinity_params_invalid(const struct xen_domctl_vcpuaffinity *vcpuaff)
+{
+ return vcpuaff->flags == 0 ||
+ ((vcpuaff->flags & XEN_VCPUAFFINITY_HARD) &&
+ guest_handle_is_null(vcpuaff->cpumap_hard.bitmap)) ||
+ ((vcpuaff->flags & XEN_VCPUAFFINITY_SOFT) &&
+ guest_handle_is_null(vcpuaff->cpumap_soft.bitmap));
+}
+
+int vcpu_affinity_domctl(struct domain *d, uint32_t cmd,
+ struct xen_domctl_vcpuaffinity *vcpuaff)
+{
+ struct vcpu *v;
+ const struct sched_unit *unit;
+ int ret = 0;
+
+ if ( vcpuaff->vcpu >= d->max_vcpus )
+ return -EINVAL;
+
+ if ( (v = d->vcpu[vcpuaff->vcpu]) == NULL )
+ return -ESRCH;
+
+ if ( vcpuaffinity_params_invalid(vcpuaff) )
+ return -EINVAL;
+
+ unit = v->sched_unit;
+
+ if ( cmd == XEN_DOMCTL_setvcpuaffinity )
+ {
+ cpumask_var_t new_affinity, old_affinity;
+ cpumask_t *online = cpupool_domain_master_cpumask(v->domain);
+
+ /*
+ * We want to be able to restore hard affinity if we are trying
+ * setting both and changing soft affinity (which happens later,
+ * when hard affinity has been succesfully chaged already) fails.
+ */
+ if ( !alloc_cpumask_var(&old_affinity) )
+ return -ENOMEM;
+
+ cpumask_copy(old_affinity, unit->cpu_hard_affinity);
+
+ if ( !alloc_cpumask_var(&new_affinity) )
+ {
+ free_cpumask_var(old_affinity);
+ return -ENOMEM;
+ }
+
+ /* Undo a stuck SCHED_pin_override? */
+ if ( vcpuaff->flags & XEN_VCPUAFFINITY_FORCE )
+ vcpu_temporary_affinity(v, NR_CPUS, VCPU_AFFINITY_OVERRIDE);
+
+ ret = 0;
+
+ /*
+ * We both set a new affinity and report back to the caller what
+ * the scheduler will be effectively using.
+ */
+ if ( vcpuaff->flags & XEN_VCPUAFFINITY_HARD )
+ {
+ ret = xenctl_bitmap_to_bitmap(cpumask_bits(new_affinity),
+ &vcpuaff->cpumap_hard, nr_cpu_ids);
+ if ( !ret )
+ ret = vcpu_set_hard_affinity(v, new_affinity);
+ if ( ret )
+ goto setvcpuaffinity_out;
+
+ /*
+ * For hard affinity, what we return is the intersection of
+ * cpupool's online mask and the new hard affinity.
+ */
+ cpumask_and(new_affinity, online, unit->cpu_hard_affinity);
+ ret = cpumask_to_xenctl_bitmap(&vcpuaff->cpumap_hard, new_affinity);
+ }
+ if ( vcpuaff->flags & XEN_VCPUAFFINITY_SOFT )
+ {
+ ret = xenctl_bitmap_to_bitmap(cpumask_bits(new_affinity),
+ &vcpuaff->cpumap_soft, nr_cpu_ids);
+ if ( !ret)
+ ret = vcpu_set_soft_affinity(v, new_affinity);
+ if ( ret )
+ {
+ /*
+ * Since we're returning error, the caller expects nothing
+ * happened, so we rollback the changes to hard affinity
+ * (if any).
+ */
+ if ( vcpuaff->flags & XEN_VCPUAFFINITY_HARD )
+ vcpu_set_hard_affinity(v, old_affinity);
+ goto setvcpuaffinity_out;
+ }
+
+ /*
+ * For soft affinity, we return the intersection between the
+ * new soft affinity, the cpupool's online map and the (new)
+ * hard affinity.
+ */
+ cpumask_and(new_affinity, new_affinity, online);
+ cpumask_and(new_affinity, new_affinity, unit->cpu_hard_affinity);
+ ret = cpumask_to_xenctl_bitmap(&vcpuaff->cpumap_soft, new_affinity);
+ }
+
+ setvcpuaffinity_out:
+ free_cpumask_var(new_affinity);
+ free_cpumask_var(old_affinity);
+ }
+ else
+ {
+ if ( vcpuaff->flags & XEN_VCPUAFFINITY_HARD )
+ ret = cpumask_to_xenctl_bitmap(&vcpuaff->cpumap_hard,
+ unit->cpu_hard_affinity);
+ if ( vcpuaff->flags & XEN_VCPUAFFINITY_SOFT )
+ ret = cpumask_to_xenctl_bitmap(&vcpuaff->cpumap_soft,
+ unit->cpu_soft_affinity);
+ }
+
+ return ret;
+}
+
+void domain_update_node_affinity(struct domain *d)
+{
+ cpumask_var_t dom_cpumask, dom_cpumask_soft;
+ cpumask_t *dom_affinity;
+ const cpumask_t *online;
+ struct sched_unit *unit;
+ unsigned int cpu;
+
+ /* Do we have vcpus already? If not, no need to update node-affinity. */
+ if ( !d->vcpu || !d->vcpu[0] )
+ return;
+
+ if ( !zalloc_cpumask_var(&dom_cpumask) )
+ return;
+ if ( !zalloc_cpumask_var(&dom_cpumask_soft) )
+ {
+ free_cpumask_var(dom_cpumask);
+ return;
+ }
+
+ online = cpupool_domain_master_cpumask(d);
+
+ spin_lock(&d->node_affinity_lock);
+
+ /*
+ * If d->auto_node_affinity is true, let's compute the domain's
+ * node-affinity and update d->node_affinity accordingly. if false,
+ * just leave d->auto_node_affinity alone.
+ */
+ if ( d->auto_node_affinity )
+ {
+ /*
+ * We want the narrowest possible set of pcpus (to get the narowest
+ * possible set of nodes). What we need is the cpumask of where the
+ * domain can run (the union of the hard affinity of all its vcpus),
+ * and the full mask of where it would prefer to run (the union of
+ * the soft affinity of all its various vcpus). Let's build them.
+ */
+ for_each_sched_unit ( d, unit )
+ {
+ cpumask_or(dom_cpumask, dom_cpumask, unit->cpu_hard_affinity);
+ cpumask_or(dom_cpumask_soft, dom_cpumask_soft,
+ unit->cpu_soft_affinity);
+ }
+ /* Filter out non-online cpus */
+ cpumask_and(dom_cpumask, dom_cpumask, online);
+ ASSERT(!cpumask_empty(dom_cpumask));
+ /* And compute the intersection between hard, online and soft */
+ cpumask_and(dom_cpumask_soft, dom_cpumask_soft, dom_cpumask);
+
+ /*
+ * If not empty, the intersection of hard, soft and online is the
+ * narrowest set we want. If empty, we fall back to hard&online.
+ */
+ dom_affinity = cpumask_empty(dom_cpumask_soft) ?
+ dom_cpumask : dom_cpumask_soft;
+
+ nodes_clear(d->node_affinity);
+ for_each_cpu ( cpu, dom_affinity )
+ node_set(cpu_to_node(cpu), d->node_affinity);
+ }
+
+ spin_unlock(&d->node_affinity_lock);
+
+ free_cpumask_var(dom_cpumask_soft);
+ free_cpumask_var(dom_cpumask);
+}
+
typedef long ret_t;
#endif /* !COMPAT */
diff --git a/xen/include/xen/domain.h b/xen/include/xen/domain.h
index 769302057b..c931eab4a9 100644
--- a/xen/include/xen/domain.h
+++ b/xen/include/xen/domain.h
@@ -27,6 +27,9 @@ struct xen_domctl_getdomaininfo;
void getdomaininfo(struct domain *d, struct xen_domctl_getdomaininfo *info);
void arch_get_domain_info(const struct domain *d,
struct xen_domctl_getdomaininfo *info);
+int xenctl_bitmap_to_bitmap(unsigned long *bitmap,
+ const struct xenctl_bitmap *xenctl_bitmap,
+ unsigned int nbits);
/*
* Arch-specifics.
diff --git a/xen/include/xen/sched.h b/xen/include/xen/sched.h
index 9f7bc69293..2507a833c2 100644
--- a/xen/include/xen/sched.h
+++ b/xen/include/xen/sched.h
@@ -50,6 +50,9 @@ DEFINE_XEN_GUEST_HANDLE(vcpu_runstate_info_compat_t);
/* A global pointer to the hardware domain (usually DOM0). */
extern struct domain *hardware_domain;
+/* A global pointer to the initial cpupool (POOL0). */
+extern struct cpupool *cpupool0;
+
#ifdef CONFIG_LATE_HWDOM
extern domid_t hardware_domid;
#else
@@ -929,6 +932,8 @@ int vcpu_temporary_affinity(struct vcpu *v, unsigned int cpu, uint8_t reason);
int vcpu_set_hard_affinity(struct vcpu *v, const cpumask_t *affinity);
int vcpu_set_soft_affinity(struct vcpu *v, const cpumask_t *affinity);
void restore_vcpu_affinity(struct domain *d);
+int vcpu_affinity_domctl(struct domain *d, uint32_t cmd,
+ struct xen_domctl_vcpuaffinity *vcpuaff);
void vcpu_runstate_get(struct vcpu *v, struct vcpu_runstate_info *runstate);
uint64_t get_cpu_idle_time(unsigned int cpu);
@@ -1054,6 +1059,8 @@ int cpupool_add_domain(struct domain *d, int poolid);
void cpupool_rm_domain(struct domain *d);
int cpupool_move_domain(struct domain *d, struct cpupool *c);
int cpupool_do_sysctl(struct xen_sysctl_cpupool_op *op);
+int cpupool_get_id(const struct domain *d);
+cpumask_t *cpupool_valid_cpus(struct cpupool *pool);
void schedule_dump(struct cpupool *c);
extern void dump_runq(unsigned char key);
--
2.16.4
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From: Juergen Gross <jgross@suse.com>
To: <xen-devel@lists.xenproject.org>
CC: Juergen Gross <jgross@suse.com>, George Dunlap
<george.dunlap@eu.citrix.com>, Dario Faggioli <dfaggioli@suse.com>, "Andrew
Cooper" <andrew.cooper3@citrix.com>, Ian Jackson <ian.jackson@eu.citrix.com>,
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Rzeszutek Wilk" <konrad.wilk@oracle.com>, Stefano Stabellini
<sstabellini@kernel.org>, Wei Liu <wl@xen.org>
Subject: [PATCH 3/9] xen/sched: cleanup sched.h
Date: Wed, 18 Dec 2019 08:48:53 +0100
Message-ID: <20191218074859.21665-4-jgross@suse.com>
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There are some items in include/xen/sched.h which can be moved to
sched-if.h as they are scheduler private.
Signed-off-by: Juergen Gross <jgross@suse.com>
---
xen/common/sched/sched-if.h | 13 +++++++++++++
xen/common/sched/schedule.c | 2 +-
xen/include/xen/sched.h | 17 -----------------
3 files changed, 14 insertions(+), 18 deletions(-)
diff --git a/xen/common/sched/sched-if.h b/xen/common/sched/sched-if.h
index a702fd23b1..edce354dc7 100644
--- a/xen/common/sched/sched-if.h
+++ b/xen/common/sched/sched-if.h
@@ -533,6 +533,7 @@ static inline void sched_unit_unpause(const struct sched_unit *unit)
struct cpupool
{
int cpupool_id;
+#define CPUPOOLID_NONE -1
unsigned int n_dom;
cpumask_var_t cpu_valid; /* all cpus assigned to pool */
cpumask_var_t res_valid; /* all scheduling resources of pool */
@@ -618,5 +619,17 @@ affinity_balance_cpumask(const struct sched_unit *unit, int step,
void sched_rm_cpu(unsigned int cpu);
const cpumask_t *sched_get_opt_cpumask(enum sched_gran opt, unsigned int cpu);
+void schedule_dump(struct cpupool *c);
+struct scheduler *scheduler_get_default(void);
+struct scheduler *scheduler_alloc(unsigned int sched_id, int *perr);
+void scheduler_free(struct scheduler *sched);
+int cpu_disable_scheduler(unsigned int cpu);
+int schedule_cpu_add(unsigned int cpu, struct cpupool *c);
+int schedule_cpu_rm(unsigned int cpu);
+int sched_move_domain(struct domain *d, struct cpupool *c);
+struct cpupool *cpupool_get_by_id(int poolid);
+void cpupool_put(struct cpupool *pool);
+int cpupool_add_domain(struct domain *d, int poolid);
+void cpupool_rm_domain(struct domain *d);
#endif /* __XEN_SCHED_IF_H__ */
diff --git a/xen/common/sched/schedule.c b/xen/common/sched/schedule.c
index c751faa741..db8ce146ca 100644
--- a/xen/common/sched/schedule.c
+++ b/xen/common/sched/schedule.c
@@ -1346,7 +1346,7 @@ int vcpu_set_hard_affinity(struct vcpu *v, const cpumask_t *affinity)
return vcpu_set_affinity(v, affinity, v->sched_unit->cpu_hard_affinity);
}
-int vcpu_set_soft_affinity(struct vcpu *v, const cpumask_t *affinity)
+static int vcpu_set_soft_affinity(struct vcpu *v, const cpumask_t *affinity)
{
return vcpu_set_affinity(v, affinity, v->sched_unit->cpu_soft_affinity);
}
diff --git a/xen/include/xen/sched.h b/xen/include/xen/sched.h
index 2507a833c2..55335d6ab3 100644
--- a/xen/include/xen/sched.h
+++ b/xen/include/xen/sched.h
@@ -685,7 +685,6 @@ int sched_init_vcpu(struct vcpu *v);
void sched_destroy_vcpu(struct vcpu *v);
int sched_init_domain(struct domain *d, int poolid);
void sched_destroy_domain(struct domain *d);
-int sched_move_domain(struct domain *d, struct cpupool *c);
long sched_adjust(struct domain *, struct xen_domctl_scheduler_op *);
long sched_adjust_global(struct xen_sysctl_scheduler_op *);
int sched_id(void);
@@ -918,19 +917,10 @@ static inline bool sched_has_urgent_vcpu(void)
return atomic_read(&this_cpu(sched_urgent_count));
}
-struct scheduler;
-
-struct scheduler *scheduler_get_default(void);
-struct scheduler *scheduler_alloc(unsigned int sched_id, int *perr);
-void scheduler_free(struct scheduler *sched);
-int schedule_cpu_add(unsigned int cpu, struct cpupool *c);
-int schedule_cpu_rm(unsigned int cpu);
void vcpu_set_periodic_timer(struct vcpu *v, s_time_t value);
-int cpu_disable_scheduler(unsigned int cpu);
void sched_setup_dom0_vcpus(struct domain *d);
int vcpu_temporary_affinity(struct vcpu *v, unsigned int cpu, uint8_t reason);
int vcpu_set_hard_affinity(struct vcpu *v, const cpumask_t *affinity);
-int vcpu_set_soft_affinity(struct vcpu *v, const cpumask_t *affinity);
void restore_vcpu_affinity(struct domain *d);
int vcpu_affinity_domctl(struct domain *d, uint32_t cmd,
struct xen_domctl_vcpuaffinity *vcpuaff);
@@ -1051,17 +1041,10 @@ extern enum cpufreq_controller {
FREQCTL_none, FREQCTL_dom0_kernel, FREQCTL_xen
} cpufreq_controller;
-#define CPUPOOLID_NONE -1
-
-struct cpupool *cpupool_get_by_id(int poolid);
-void cpupool_put(struct cpupool *pool);
-int cpupool_add_domain(struct domain *d, int poolid);
-void cpupool_rm_domain(struct domain *d);
int cpupool_move_domain(struct domain *d, struct cpupool *c);
int cpupool_do_sysctl(struct xen_sysctl_cpupool_op *op);
int cpupool_get_id(const struct domain *d);
cpumask_t *cpupool_valid_cpus(struct cpupool *pool);
-void schedule_dump(struct cpupool *c);
extern void dump_runq(unsigned char key);
void arch_do_physinfo(struct xen_sysctl_physinfo *pi);
--
2.16.4
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From: Juergen Gross <jgross@suse.com>
To: <xen-devel@lists.xenproject.org>
CC: Juergen Gross <jgross@suse.com>, George Dunlap
<george.dunlap@eu.citrix.com>, Dario Faggioli <dfaggioli@suse.com>
Subject: [PATCH 4/9] xen/sched: remove special cases for free cpus in schedulers
Date: Wed, 18 Dec 2019 08:48:54 +0100
Message-ID: <20191218074859.21665-5-jgross@suse.com>
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With the idle scheduler now taking care of all cpus not in any cpupool
the special cases in the other schedulers for no cpupool associated
can be removed.
Signed-off-by: Juergen Gross <jgross@suse.com>
---
xen/common/sched/sched_credit.c | 7 ++-----
xen/common/sched/sched_credit2.c | 30 ------------------------------
2 files changed, 2 insertions(+), 35 deletions(-)
diff --git a/xen/common/sched/sched_credit.c b/xen/common/sched/sched_credit.c
index a098ca0f3a..8b1de9b033 100644
--- a/xen/common/sched/sched_credit.c
+++ b/xen/common/sched/sched_credit.c
@@ -1690,11 +1690,8 @@ csched_load_balance(struct csched_private *prv, int cpu,
BUG_ON(get_sched_res(cpu) != snext->unit->res);
- /*
- * If this CPU is going offline, or is not (yet) part of any cpupool
- * (as it happens, e.g., during cpu bringup), we shouldn't steal work.
- */
- if ( unlikely(!cpumask_test_cpu(cpu, online) || c == NULL) )
+ /* If this CPU is going offline, we shouldn't steal work. */
+ if ( unlikely(!cpumask_test_cpu(cpu, online)) )
goto out;
if ( snext->pri == CSCHED_PRI_IDLE )
diff --git a/xen/common/sched/sched_credit2.c b/xen/common/sched/sched_credit2.c
index 5bfe1441a2..f9e521a3a8 100644
--- a/xen/common/sched/sched_credit2.c
+++ b/xen/common/sched/sched_credit2.c
@@ -2744,40 +2744,10 @@ static void
csched2_unit_migrate(
const struct scheduler *ops, struct sched_unit *unit, unsigned int new_cpu)
{
- struct domain *d = unit->domain;
struct csched2_unit * const svc = csched2_unit(unit);
struct csched2_runqueue_data *trqd;
s_time_t now = NOW();
- /*
- * Being passed a target pCPU which is outside of our cpupool is only
- * valid if we are shutting down (or doing ACPI suspend), and we are
- * moving everyone to BSP, no matter whether or not BSP is inside our
- * cpupool.
- *
- * And since there indeed is the chance that it is not part of it, all
- * we must do is remove _and_ unassign the unit from any runqueue, as
- * well as updating v->processor with the target, so that the suspend
- * process can continue.
- *
- * It will then be during resume that a new, meaningful, value for
- * v->processor will be chosen, and during actual domain unpause that
- * the unit will be assigned to and added to the proper runqueue.
- */
- if ( unlikely(!cpumask_test_cpu(new_cpu, cpupool_domain_master_cpumask(d))) )
- {
- ASSERT(system_state == SYS_STATE_suspend);
- if ( unit_on_runq(svc) )
- {
- runq_remove(svc);
- update_load(ops, svc->rqd, NULL, -1, now);
- }
- _runq_deassign(svc);
- sched_set_res(unit, get_sched_res(new_cpu));
- return;
- }
-
- /* If here, new_cpu must be a valid Credit2 pCPU, and in our affinity. */
ASSERT(cpumask_test_cpu(new_cpu, &csched2_priv(ops)->initialized));
ASSERT(cpumask_test_cpu(new_cpu, unit->cpu_hard_affinity));
--
2.16.4
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From: Juergen Gross <jgross@suse.com>
To: <xen-devel@lists.xenproject.org>
CC: Juergen Gross <jgross@suse.com>, Dario Faggioli <dfaggioli@suse.com>, Meng
Xu <mengxu@cis.upenn.edu>, George Dunlap <george.dunlap@eu.citrix.com>
Subject: [PATCH 5/9] xen/sched: use scratch cpumask instead of allocating it on the stack
Date: Wed, 18 Dec 2019 08:48:55 +0100
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In sched_rt there are three instances of cpumasks allocated on the
stack. Replace them by using cpumask_scratch.
Signed-off-by: Juergen Gross <jgross@suse.com>
---
xen/common/sched/sched_rt.c | 56 ++++++++++++++++++++++++++++++---------------
1 file changed, 37 insertions(+), 19 deletions(-)
diff --git a/xen/common/sched/sched_rt.c b/xen/common/sched/sched_rt.c
index 379b56bc2a..264a753116 100644
--- a/xen/common/sched/sched_rt.c
+++ b/xen/common/sched/sched_rt.c
@@ -637,23 +637,38 @@ replq_reinsert(const struct scheduler *ops, struct rt_unit *svc)
* and available resources
*/
static struct sched_resource *
-rt_res_pick(const struct scheduler *ops, const struct sched_unit *unit)
+rt_res_pick_locked(const struct sched_unit *unit, unsigned int locked_cpu)
{
- cpumask_t cpus;
+ cpumask_t *cpus = cpumask_scratch_cpu(locked_cpu);
cpumask_t *online;
int cpu;
online = cpupool_domain_master_cpumask(unit->domain);
- cpumask_and(&cpus, online, unit->cpu_hard_affinity);
+ cpumask_and(cpus, online, unit->cpu_hard_affinity);
- cpu = cpumask_test_cpu(sched_unit_master(unit), &cpus)
+ cpu = cpumask_test_cpu(sched_unit_master(unit), cpus)
? sched_unit_master(unit)
- : cpumask_cycle(sched_unit_master(unit), &cpus);
- ASSERT( !cpumask_empty(&cpus) && cpumask_test_cpu(cpu, &cpus) );
+ : cpumask_cycle(sched_unit_master(unit), cpus);
+ ASSERT( !cpumask_empty(cpus) && cpumask_test_cpu(cpu, cpus) );
return get_sched_res(cpu);
}
+/*
+ * Pick a valid resource for the unit vc
+ * Valid resource of an unit is intesection of unit's affinity
+ * and available resources
+ */
+static struct sched_resource *
+rt_res_pick(const struct scheduler *ops, const struct sched_unit *unit)
+{
+ struct sched_resource *res;
+
+ res = rt_res_pick_locked(unit, unit->res->master_cpu);
+
+ return res;
+}
+
/*
* Init/Free related code
*/
@@ -886,11 +901,14 @@ rt_unit_insert(const struct scheduler *ops, struct sched_unit *unit)
struct rt_unit *svc = rt_unit(unit);
s_time_t now;
spinlock_t *lock;
+ unsigned int cpu = smp_processor_id();
BUG_ON( is_idle_unit(unit) );
/* This is safe because unit isn't yet being scheduled */
- sched_set_res(unit, rt_res_pick(ops, unit));
+ lock = pcpu_schedule_lock_irq(cpu);
+ sched_set_res(unit, rt_res_pick_locked(unit, cpu));
+ pcpu_schedule_unlock_irq(lock, cpu);
lock = unit_schedule_lock_irq(unit);
@@ -1003,13 +1021,13 @@ burn_budget(const struct scheduler *ops, struct rt_unit *svc, s_time_t now)
* lock is grabbed before calling this function
*/
static struct rt_unit *
-runq_pick(const struct scheduler *ops, const cpumask_t *mask)
+runq_pick(const struct scheduler *ops, const cpumask_t *mask, unsigned int cpu)
{
struct list_head *runq = rt_runq(ops);
struct list_head *iter;
struct rt_unit *svc = NULL;
struct rt_unit *iter_svc = NULL;
- cpumask_t cpu_common;
+ cpumask_t *cpu_common = cpumask_scratch_cpu(cpu);
cpumask_t *online;
list_for_each ( iter, runq )
@@ -1018,9 +1036,9 @@ runq_pick(const struct scheduler *ops, const cpumask_t *mask)
/* mask cpu_hard_affinity & cpupool & mask */
online = cpupool_domain_master_cpumask(iter_svc->unit->domain);
- cpumask_and(&cpu_common, online, iter_svc->unit->cpu_hard_affinity);
- cpumask_and(&cpu_common, mask, &cpu_common);
- if ( cpumask_empty(&cpu_common) )
+ cpumask_and(cpu_common, online, iter_svc->unit->cpu_hard_affinity);
+ cpumask_and(cpu_common, mask, cpu_common);
+ if ( cpumask_empty(cpu_common) )
continue;
ASSERT( iter_svc->cur_budget > 0 );
@@ -1092,7 +1110,7 @@ rt_schedule(const struct scheduler *ops, struct sched_unit *currunit,
}
else
{
- snext = runq_pick(ops, cpumask_of(sched_cpu));
+ snext = runq_pick(ops, cpumask_of(sched_cpu), cur_cpu);
if ( snext == NULL )
snext = rt_unit(sched_idle_unit(sched_cpu));
@@ -1186,22 +1204,22 @@ runq_tickle(const struct scheduler *ops, struct rt_unit *new)
struct rt_unit *iter_svc;
struct sched_unit *iter_unit;
int cpu = 0, cpu_to_tickle = 0;
- cpumask_t not_tickled;
+ cpumask_t *not_tickled = cpumask_scratch_cpu(smp_processor_id());
cpumask_t *online;
if ( new == NULL || is_idle_unit(new->unit) )
return;
online = cpupool_domain_master_cpumask(new->unit->domain);
- cpumask_and(¬_tickled, online, new->unit->cpu_hard_affinity);
- cpumask_andnot(¬_tickled, ¬_tickled, &prv->tickled);
+ cpumask_and(not_tickled, online, new->unit->cpu_hard_affinity);
+ cpumask_andnot(not_tickled, not_tickled, &prv->tickled);
/*
* 1) If there are any idle CPUs, kick one.
* For cache benefit,we first search new->cpu.
* The same loop also find the one with lowest priority.
*/
- cpu = cpumask_test_or_cycle(sched_unit_master(new->unit), ¬_tickled);
+ cpu = cpumask_test_or_cycle(sched_unit_master(new->unit), not_tickled);
while ( cpu!= nr_cpu_ids )
{
iter_unit = curr_on_cpu(cpu);
@@ -1216,8 +1234,8 @@ runq_tickle(const struct scheduler *ops, struct rt_unit *new)
compare_unit_priority(iter_svc, latest_deadline_unit) < 0 )
latest_deadline_unit = iter_svc;
- cpumask_clear_cpu(cpu, ¬_tickled);
- cpu = cpumask_cycle(cpu, ¬_tickled);
+ cpumask_clear_cpu(cpu, not_tickled);
+ cpu = cpumask_cycle(cpu, not_tickled);
}
/* 2) candicate has higher priority, kick out lowest priority unit */
--
2.16.4
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From: Juergen Gross <jgross@suse.com>
To: <xen-devel@lists.xenproject.org>
CC: Juergen Gross <jgross@suse.com>, George Dunlap
<george.dunlap@eu.citrix.com>, Dario Faggioli <dfaggioli@suse.com>
Subject: [PATCH 6/9] xen/sched: replace null scheduler percpu-variable with pdata hook
Date: Wed, 18 Dec 2019 08:48:56 +0100
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Instead of having an own percpu-variable for private data per cpu the
generic scheduler interface for that purpose should be used.
Signed-off-by: Juergen Gross <jgross@suse.com>
---
xen/common/sched/sched_null.c | 89 +++++++++++++++++++++++++++++--------------
1 file changed, 60 insertions(+), 29 deletions(-)
diff --git a/xen/common/sched/sched_null.c b/xen/common/sched/sched_null.c
index 5a23a7e7dc..11aab25743 100644
--- a/xen/common/sched/sched_null.c
+++ b/xen/common/sched/sched_null.c
@@ -89,7 +89,6 @@ struct null_private {
struct null_pcpu {
struct sched_unit *unit;
};
-DEFINE_PER_CPU(struct null_pcpu, npc);
/*
* Schedule unit
@@ -159,32 +158,48 @@ static void null_deinit(struct scheduler *ops)
ops->sched_data = NULL;
}
-static void init_pdata(struct null_private *prv, unsigned int cpu)
+static void init_pdata(struct null_private *prv, struct null_pcpu *npc,
+ unsigned int cpu)
{
/* Mark the pCPU as free, and with no unit assigned */
cpumask_set_cpu(cpu, &prv->cpus_free);
- per_cpu(npc, cpu).unit = NULL;
+ npc->unit = NULL;
}
static void null_init_pdata(const struct scheduler *ops, void *pdata, int cpu)
{
struct null_private *prv = null_priv(ops);
- /* alloc_pdata is not implemented, so we want this to be NULL. */
- ASSERT(!pdata);
+ ASSERT(pdata);
- init_pdata(prv, cpu);
+ init_pdata(prv, pdata, cpu);
}
static void null_deinit_pdata(const struct scheduler *ops, void *pcpu, int cpu)
{
struct null_private *prv = null_priv(ops);
+ struct null_pcpu *npc = pcpu;
- /* alloc_pdata not implemented, so this must have stayed NULL */
- ASSERT(!pcpu);
+ ASSERT(npc);
cpumask_clear_cpu(cpu, &prv->cpus_free);
- per_cpu(npc, cpu).unit = NULL;
+ npc->unit = NULL;
+}
+
+static void *null_alloc_pdata(const struct scheduler *ops, int cpu)
+{
+ struct null_pcpu *npc;
+
+ npc = xzalloc(struct null_pcpu);
+ if ( npc == NULL )
+ return ERR_PTR(-ENOMEM);
+
+ return npc;
+}
+
+static void null_free_pdata(const struct scheduler *ops, void *pcpu, int cpu)
+{
+ xfree(pcpu);
}
static void *null_alloc_udata(const struct scheduler *ops,
@@ -268,6 +283,7 @@ pick_res(struct null_private *prv, const struct sched_unit *unit)
unsigned int bs;
unsigned int cpu = sched_unit_master(unit), new_cpu;
cpumask_t *cpus = cpupool_domain_master_cpumask(unit->domain);
+ struct null_pcpu *npc = get_sched_res(cpu)->sched_priv;
ASSERT(spin_is_locked(get_sched_res(cpu)->schedule_lock));
@@ -286,8 +302,7 @@ pick_res(struct null_private *prv, const struct sched_unit *unit)
* don't, so we get to keep in the scratch cpumask what we have just
* put in it.)
*/
- if ( likely((per_cpu(npc, cpu).unit == NULL ||
- per_cpu(npc, cpu).unit == unit)
+ if ( likely((npc->unit == NULL || npc->unit == unit)
&& cpumask_test_cpu(cpu, cpumask_scratch_cpu(cpu))) )
{
new_cpu = cpu;
@@ -336,9 +351,11 @@ pick_res(struct null_private *prv, const struct sched_unit *unit)
static void unit_assign(struct null_private *prv, struct sched_unit *unit,
unsigned int cpu)
{
+ struct null_pcpu *npc = get_sched_res(cpu)->sched_priv;
+
ASSERT(is_unit_online(unit));
- per_cpu(npc, cpu).unit = unit;
+ npc->unit = unit;
sched_set_res(unit, get_sched_res(cpu));
cpumask_clear_cpu(cpu, &prv->cpus_free);
@@ -363,12 +380,13 @@ static bool unit_deassign(struct null_private *prv, struct sched_unit *unit)
unsigned int bs;
unsigned int cpu = sched_unit_master(unit);
struct null_unit *wvc;
+ struct null_pcpu *npc = get_sched_res(cpu)->sched_priv;
ASSERT(list_empty(&null_unit(unit)->waitq_elem));
- ASSERT(per_cpu(npc, cpu).unit == unit);
+ ASSERT(npc->unit == unit);
ASSERT(!cpumask_test_cpu(cpu, &prv->cpus_free));
- per_cpu(npc, cpu).unit = NULL;
+ npc->unit = NULL;
cpumask_set_cpu(cpu, &prv->cpus_free);
dprintk(XENLOG_G_INFO, "%d <-- NULL (%pdv%d)\n", cpu, unit->domain,
@@ -436,7 +454,7 @@ static spinlock_t *null_switch_sched(struct scheduler *new_ops,
*/
ASSERT(!local_irq_is_enabled());
- init_pdata(prv, cpu);
+ init_pdata(prv, pdata, cpu);
return &sr->_lock;
}
@@ -446,6 +464,7 @@ static void null_unit_insert(const struct scheduler *ops,
{
struct null_private *prv = null_priv(ops);
struct null_unit *nvc = null_unit(unit);
+ struct null_pcpu *npc;
unsigned int cpu;
spinlock_t *lock;
@@ -462,6 +481,7 @@ static void null_unit_insert(const struct scheduler *ops,
retry:
sched_set_res(unit, pick_res(prv, unit));
cpu = sched_unit_master(unit);
+ npc = get_sched_res(cpu)->sched_priv;
spin_unlock(lock);
@@ -471,7 +491,7 @@ static void null_unit_insert(const struct scheduler *ops,
cpupool_domain_master_cpumask(unit->domain));
/* If the pCPU is free, we assign unit to it */
- if ( likely(per_cpu(npc, cpu).unit == NULL) )
+ if ( likely(npc->unit == NULL) )
{
/*
* Insert is followed by vcpu_wake(), so there's no need to poke
@@ -519,7 +539,10 @@ static void null_unit_remove(const struct scheduler *ops,
/* If offline, the unit shouldn't be assigned, nor in the waitqueue */
if ( unlikely(!is_unit_online(unit)) )
{
- ASSERT(per_cpu(npc, sched_unit_master(unit)).unit != unit);
+ struct null_pcpu *npc;
+
+ npc = unit->res->sched_priv;
+ ASSERT(npc->unit != unit);
ASSERT(list_empty(&nvc->waitq_elem));
goto out;
}
@@ -548,6 +571,7 @@ static void null_unit_wake(const struct scheduler *ops,
struct null_private *prv = null_priv(ops);
struct null_unit *nvc = null_unit(unit);
unsigned int cpu = sched_unit_master(unit);
+ struct null_pcpu *npc = get_sched_res(cpu)->sched_priv;
ASSERT(!is_idle_unit(unit));
@@ -569,7 +593,7 @@ static void null_unit_wake(const struct scheduler *ops,
else
SCHED_STAT_CRANK(unit_wake_not_runnable);
- if ( likely(per_cpu(npc, cpu).unit == unit) )
+ if ( likely(npc->unit == unit) )
{
cpu_raise_softirq(cpu, SCHEDULE_SOFTIRQ);
return;
@@ -581,7 +605,7 @@ static void null_unit_wake(const struct scheduler *ops,
* and its previous resource is free (and affinities match), we can just
* assign the unit to it (we own the proper lock already) and be done.
*/
- if ( per_cpu(npc, cpu).unit == NULL &&
+ if ( npc->unit == NULL &&
unit_check_affinity(unit, cpu, BALANCE_HARD_AFFINITY) )
{
if ( !has_soft_affinity(unit) ||
@@ -622,6 +646,7 @@ static void null_unit_sleep(const struct scheduler *ops,
{
struct null_private *prv = null_priv(ops);
unsigned int cpu = sched_unit_master(unit);
+ struct null_pcpu *npc = get_sched_res(cpu)->sched_priv;
bool tickled = false;
ASSERT(!is_idle_unit(unit));
@@ -640,7 +665,7 @@ static void null_unit_sleep(const struct scheduler *ops,
list_del_init(&nvc->waitq_elem);
spin_unlock(&prv->waitq_lock);
}
- else if ( per_cpu(npc, cpu).unit == unit )
+ else if ( npc->unit == unit )
tickled = unit_deassign(prv, unit);
}
@@ -663,6 +688,7 @@ static void null_unit_migrate(const struct scheduler *ops,
{
struct null_private *prv = null_priv(ops);
struct null_unit *nvc = null_unit(unit);
+ struct null_pcpu *npc;
ASSERT(!is_idle_unit(unit));
@@ -686,7 +712,8 @@ static void null_unit_migrate(const struct scheduler *ops,
* If unit is assigned to a pCPU, then such pCPU becomes free, and we
* should look in the waitqueue if anyone else can be assigned to it.
*/
- if ( likely(per_cpu(npc, sched_unit_master(unit)).unit == unit) )
+ npc = unit->res->sched_priv;
+ if ( likely(npc->unit == unit) )
{
unit_deassign(prv, unit);
SCHED_STAT_CRANK(migrate_running);
@@ -720,7 +747,8 @@ static void null_unit_migrate(const struct scheduler *ops,
*
* In latter, all we can do is to park unit in the waitqueue.
*/
- if ( per_cpu(npc, new_cpu).unit == NULL &&
+ npc = get_sched_res(new_cpu)->sched_priv;
+ if ( npc->unit == NULL &&
unit_check_affinity(unit, new_cpu, BALANCE_HARD_AFFINITY) )
{
/* unit might have been in the waitqueue, so remove it */
@@ -788,6 +816,7 @@ static void null_schedule(const struct scheduler *ops, struct sched_unit *prev,
unsigned int bs;
const unsigned int cur_cpu = smp_processor_id();
const unsigned int sched_cpu = sched_get_resource_cpu(cur_cpu);
+ struct null_pcpu *npc = get_sched_res(sched_cpu)->sched_priv;
struct null_private *prv = null_priv(ops);
struct null_unit *wvc;
@@ -802,14 +831,14 @@ static void null_schedule(const struct scheduler *ops, struct sched_unit *prev,
} d;
d.cpu = cur_cpu;
d.tasklet = tasklet_work_scheduled;
- if ( per_cpu(npc, sched_cpu).unit == NULL )
+ if ( npc->unit == NULL )
{
d.unit = d.dom = -1;
}
else
{
- d.unit = per_cpu(npc, sched_cpu).unit->unit_id;
- d.dom = per_cpu(npc, sched_cpu).unit->domain->domain_id;
+ d.unit = npc->unit->unit_id;
+ d.dom = npc->unit->domain->domain_id;
}
__trace_var(TRC_SNULL_SCHEDULE, 1, sizeof(d), &d);
}
@@ -820,7 +849,7 @@ static void null_schedule(const struct scheduler *ops, struct sched_unit *prev,
prev->next_task = sched_idle_unit(sched_cpu);
}
else
- prev->next_task = per_cpu(npc, sched_cpu).unit;
+ prev->next_task = npc->unit;
prev->next_time = -1;
/*
@@ -921,6 +950,7 @@ static inline void dump_unit(struct null_private *prv, struct null_unit *nvc)
static void null_dump_pcpu(const struct scheduler *ops, int cpu)
{
struct null_private *prv = null_priv(ops);
+ struct null_pcpu *npc = get_sched_res(cpu)->sched_priv;
struct null_unit *nvc;
spinlock_t *lock;
unsigned long flags;
@@ -930,9 +960,8 @@ static void null_dump_pcpu(const struct scheduler *ops, int cpu)
printk("CPU[%02d] sibling={%*pbl}, core={%*pbl}",
cpu, CPUMASK_PR(per_cpu(cpu_sibling_mask, cpu)),
CPUMASK_PR(per_cpu(cpu_core_mask, cpu)));
- if ( per_cpu(npc, cpu).unit != NULL )
- printk(", unit=%pdv%d", per_cpu(npc, cpu).unit->domain,
- per_cpu(npc, cpu).unit->unit_id);
+ if ( npc->unit != NULL )
+ printk(", unit=%pdv%d", npc->unit->domain, npc->unit->unit_id);
printk("\n");
/* current unit (nothing to say if that's the idle unit) */
@@ -1010,6 +1039,8 @@ static const struct scheduler sched_null_def = {
.init = null_init,
.deinit = null_deinit,
+ .alloc_pdata = null_alloc_pdata,
+ .free_pdata = null_free_pdata,
.init_pdata = null_init_pdata,
.switch_sched = null_switch_sched,
.deinit_pdata = null_deinit_pdata,
--
2.16.4
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From: Juergen Gross <jgross@suse.com>
To: <xen-devel@lists.xenproject.org>
CC: Juergen Gross <jgross@suse.com>, Dario Faggioli <dfaggioli@suse.com>,
George Dunlap <george.dunlap@eu.citrix.com>, Andrew Cooper
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<josh.whitehead@dornerworks.com>, Stewart Hildebrand
<stewart.hildebrand@dornerworks.com>, Meng Xu <mengxu@cis.upenn.edu>
Subject: [PATCH 7/9] xen/sched: switch scheduling to bool where appropriate
Date: Wed, 18 Dec 2019 08:48:57 +0100
Message-ID: <20191218074859.21665-8-jgross@suse.com>
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Scheduling code has several places using int or bool_t instead of bool.
Switch those.
Signed-off-by: Juergen Gross <jgross@suse.com>
---
xen/common/sched/cpupool.c | 10 +++++-----
xen/common/sched/sched-if.h | 2 +-
xen/common/sched/sched_arinc653.c | 8 ++++----
xen/common/sched/sched_credit.c | 12 ++++++------
xen/common/sched/sched_rt.c | 14 +++++++-------
xen/common/sched/schedule.c | 14 +++++++-------
xen/include/xen/sched.h | 6 +++---
7 files changed, 33 insertions(+), 33 deletions(-)
diff --git a/xen/common/sched/cpupool.c b/xen/common/sched/cpupool.c
index d5b64d0a6a..14212bb4ae 100644
--- a/xen/common/sched/cpupool.c
+++ b/xen/common/sched/cpupool.c
@@ -154,7 +154,7 @@ static struct cpupool *alloc_cpupool_struct(void)
* the searched id is returned
* returns NULL if not found.
*/
-static struct cpupool *__cpupool_find_by_id(int id, int exact)
+static struct cpupool *__cpupool_find_by_id(int id, bool exact)
{
struct cpupool **q;
@@ -169,10 +169,10 @@ static struct cpupool *__cpupool_find_by_id(int id, int exact)
static struct cpupool *cpupool_find_by_id(int poolid)
{
- return __cpupool_find_by_id(poolid, 1);
+ return __cpupool_find_by_id(poolid, true);
}
-static struct cpupool *__cpupool_get_by_id(int poolid, int exact)
+static struct cpupool *__cpupool_get_by_id(int poolid, bool exact)
{
struct cpupool *c;
spin_lock(&cpupool_lock);
@@ -185,12 +185,12 @@ static struct cpupool *__cpupool_get_by_id(int poolid, int exact)
struct cpupool *cpupool_get_by_id(int poolid)
{
- return __cpupool_get_by_id(poolid, 1);
+ return __cpupool_get_by_id(poolid, true);
}
static struct cpupool *cpupool_get_next_by_id(int poolid)
{
- return __cpupool_get_by_id(poolid, 0);
+ return __cpupool_get_by_id(poolid, false);
}
void cpupool_put(struct cpupool *pool)
diff --git a/xen/common/sched/sched-if.h b/xen/common/sched/sched-if.h
index edce354dc7..9d0db75cbb 100644
--- a/xen/common/sched/sched-if.h
+++ b/xen/common/sched/sched-if.h
@@ -589,7 +589,7 @@ unsigned int cpupool_get_granularity(const struct cpupool *c);
* * The hard affinity is not a subset of soft affinity
* * There is an overlap between the soft and hard affinity masks
*/
-static inline int has_soft_affinity(const struct sched_unit *unit)
+static inline bool has_soft_affinity(const struct sched_unit *unit)
{
return unit->soft_aff_effective &&
!cpumask_subset(cpupool_domain_master_cpumask(unit->domain),
diff --git a/xen/common/sched/sched_arinc653.c b/xen/common/sched/sched_arinc653.c
index fe15754900..dc45378952 100644
--- a/xen/common/sched/sched_arinc653.c
+++ b/xen/common/sched/sched_arinc653.c
@@ -75,7 +75,7 @@ typedef struct arinc653_unit_s
* arinc653_unit_t pointer. */
struct sched_unit * unit;
/* awake holds whether the UNIT has been woken with vcpu_wake() */
- bool_t awake;
+ bool awake;
/* list holds the linked list information for the list this UNIT
* is stored in */
struct list_head list;
@@ -427,7 +427,7 @@ a653sched_alloc_udata(const struct scheduler *ops, struct sched_unit *unit,
* will mark the UNIT awake.
*/
svc->unit = unit;
- svc->awake = 0;
+ svc->awake = false;
if ( !is_idle_unit(unit) )
list_add(&svc->list, &SCHED_PRIV(ops)->unit_list);
update_schedule_units(ops);
@@ -473,7 +473,7 @@ static void
a653sched_unit_sleep(const struct scheduler *ops, struct sched_unit *unit)
{
if ( AUNIT(unit) != NULL )
- AUNIT(unit)->awake = 0;
+ AUNIT(unit)->awake = false;
/*
* If the UNIT being put to sleep is the same one that is currently
@@ -493,7 +493,7 @@ static void
a653sched_unit_wake(const struct scheduler *ops, struct sched_unit *unit)
{
if ( AUNIT(unit) != NULL )
- AUNIT(unit)->awake = 1;
+ AUNIT(unit)->awake = true;
cpu_raise_softirq(sched_unit_master(unit), SCHEDULE_SOFTIRQ);
}
diff --git a/xen/common/sched/sched_credit.c b/xen/common/sched/sched_credit.c
index 8b1de9b033..05930261d9 100644
--- a/xen/common/sched/sched_credit.c
+++ b/xen/common/sched/sched_credit.c
@@ -245,7 +245,7 @@ __runq_elem(struct list_head *elem)
}
/* Is the first element of cpu's runq (if any) cpu's idle unit? */
-static inline bool_t is_runq_idle(unsigned int cpu)
+static inline bool is_runq_idle(unsigned int cpu)
{
/*
* We're peeking at cpu's runq, we must hold the proper lock.
@@ -344,7 +344,7 @@ static void burn_credits(struct csched_unit *svc, s_time_t now)
svc->start_time += (credits * MILLISECS(1)) / CSCHED_CREDITS_PER_MSEC;
}
-static bool_t __read_mostly opt_tickle_one_idle = 1;
+static bool __read_mostly opt_tickle_one_idle = true;
boolean_param("tickle_one_idle_cpu", opt_tickle_one_idle);
DEFINE_PER_CPU(unsigned int, last_tickle_cpu);
@@ -719,7 +719,7 @@ __csched_unit_is_migrateable(const struct csched_private *prv,
static int
_csched_cpu_pick(const struct scheduler *ops, const struct sched_unit *unit,
- bool_t commit)
+ bool commit)
{
int cpu = sched_unit_master(unit);
/* We must always use cpu's scratch space */
@@ -871,7 +871,7 @@ csched_res_pick(const struct scheduler *ops, const struct sched_unit *unit)
* get boosted, which we don't deserve as we are "only" migrating.
*/
set_bit(CSCHED_FLAG_UNIT_MIGRATING, &svc->flags);
- return get_sched_res(_csched_cpu_pick(ops, unit, 1));
+ return get_sched_res(_csched_cpu_pick(ops, unit, true));
}
static inline void
@@ -975,7 +975,7 @@ csched_unit_acct(struct csched_private *prv, unsigned int cpu)
* migrating it to run elsewhere (see multi-core and multi-thread
* support in csched_res_pick()).
*/
- new_cpu = _csched_cpu_pick(ops, currunit, 0);
+ new_cpu = _csched_cpu_pick(ops, currunit, false);
unit_schedule_unlock_irqrestore(lock, flags, currunit);
@@ -1108,7 +1108,7 @@ static void
csched_unit_wake(const struct scheduler *ops, struct sched_unit *unit)
{
struct csched_unit * const svc = CSCHED_UNIT(unit);
- bool_t migrating;
+ bool migrating;
BUG_ON( is_idle_unit(unit) );
diff --git a/xen/common/sched/sched_rt.c b/xen/common/sched/sched_rt.c
index 264a753116..8646d77343 100644
--- a/xen/common/sched/sched_rt.c
+++ b/xen/common/sched/sched_rt.c
@@ -490,10 +490,10 @@ rt_update_deadline(s_time_t now, struct rt_unit *svc)
static inline bool
deadline_queue_remove(struct list_head *queue, struct list_head *elem)
{
- int pos = 0;
+ bool pos = false;
if ( queue->next != elem )
- pos = 1;
+ pos = true;
list_del_init(elem);
return !pos;
@@ -505,14 +505,14 @@ deadline_queue_insert(struct rt_unit * (*qelem)(struct list_head *),
struct list_head *queue)
{
struct list_head *iter;
- int pos = 0;
+ bool pos = false;
list_for_each ( iter, queue )
{
struct rt_unit * iter_svc = (*qelem)(iter);
if ( compare_unit_priority(svc, iter_svc) > 0 )
break;
- pos++;
+ pos = true;
}
list_add_tail(elem, iter);
return !pos;
@@ -605,7 +605,7 @@ replq_reinsert(const struct scheduler *ops, struct rt_unit *svc)
{
struct list_head *replq = rt_replq(ops);
struct rt_unit *rearm_svc = svc;
- bool_t rearm = 0;
+ bool rearm = false;
ASSERT( unit_on_replq(svc) );
@@ -622,7 +622,7 @@ replq_reinsert(const struct scheduler *ops, struct rt_unit *svc)
{
deadline_replq_insert(svc, &svc->replq_elem, replq);
rearm_svc = replq_elem(replq->next);
- rearm = 1;
+ rearm = true;
}
else
rearm = deadline_replq_insert(svc, &svc->replq_elem, replq);
@@ -1279,7 +1279,7 @@ rt_unit_wake(const struct scheduler *ops, struct sched_unit *unit)
{
struct rt_unit * const svc = rt_unit(unit);
s_time_t now;
- bool_t missed;
+ bool missed;
BUG_ON( is_idle_unit(unit) );
diff --git a/xen/common/sched/schedule.c b/xen/common/sched/schedule.c
index db8ce146ca..3307e88b6c 100644
--- a/xen/common/sched/schedule.c
+++ b/xen/common/sched/schedule.c
@@ -53,7 +53,7 @@ string_param("sched", opt_sched);
* scheduler will give preferrence to partially idle package compared to
* the full idle package, when picking pCPU to schedule vCPU.
*/
-bool_t sched_smt_power_savings = 0;
+bool sched_smt_power_savings;
boolean_param("sched_smt_power_savings", sched_smt_power_savings);
/* Default scheduling rate limit: 1ms
@@ -574,7 +574,7 @@ int sched_init_vcpu(struct vcpu *v)
{
get_sched_res(v->processor)->curr = unit;
get_sched_res(v->processor)->sched_unit_idle = unit;
- v->is_running = 1;
+ v->is_running = true;
unit->is_running = true;
unit->state_entry_time = NOW();
}
@@ -983,7 +983,7 @@ static void sched_unit_migrate_finish(struct sched_unit *unit)
unsigned long flags;
unsigned int old_cpu, new_cpu;
spinlock_t *old_lock, *new_lock;
- bool_t pick_called = 0;
+ bool pick_called = false;
struct vcpu *v;
/*
@@ -1029,7 +1029,7 @@ static void sched_unit_migrate_finish(struct sched_unit *unit)
if ( (new_lock == get_sched_res(new_cpu)->schedule_lock) &&
cpumask_test_cpu(new_cpu, unit->domain->cpupool->cpu_valid) )
break;
- pick_called = 1;
+ pick_called = true;
}
else
{
@@ -1037,7 +1037,7 @@ static void sched_unit_migrate_finish(struct sched_unit *unit)
* We do not hold the scheduler lock appropriate for this vCPU.
* Thus we cannot select a new CPU on this iteration. Try again.
*/
- pick_called = 0;
+ pick_called = false;
}
sched_spin_unlock_double(old_lock, new_lock, flags);
@@ -2148,7 +2148,7 @@ static void sched_switch_units(struct sched_resource *sr,
vcpu_runstate_change(vnext, vnext->new_state, now);
}
- vnext->is_running = 1;
+ vnext->is_running = true;
if ( is_idle_vcpu(vnext) )
vnext->sched_unit = next;
@@ -2219,7 +2219,7 @@ static void vcpu_context_saved(struct vcpu *vprev, struct vcpu *vnext)
smp_wmb();
if ( vprev != vnext )
- vprev->is_running = 0;
+ vprev->is_running = false;
}
static void unit_context_saved(struct sched_resource *sr)
diff --git a/xen/include/xen/sched.h b/xen/include/xen/sched.h
index 55335d6ab3..b2f48a3512 100644
--- a/xen/include/xen/sched.h
+++ b/xen/include/xen/sched.h
@@ -557,18 +557,18 @@ static inline bool is_system_domain(const struct domain *d)
* Use this when you don't have an existing reference to @d. It returns
* FALSE if @d is being destroyed.
*/
-static always_inline int get_domain(struct domain *d)
+static always_inline bool get_domain(struct domain *d)
{
int old, seen = atomic_read(&d->refcnt);
do
{
old = seen;
if ( unlikely(old & DOMAIN_DESTROYED) )
- return 0;
+ return false;
seen = atomic_cmpxchg(&d->refcnt, old, old + 1);
}
while ( unlikely(seen != old) );
- return 1;
+ return true;
}
/*
--
2.16.4
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From: Juergen Gross <jgross@suse.com>
To: <xen-devel@lists.xenproject.org>
CC: Juergen Gross <jgross@suse.com>, Stefano Stabellini
<sstabellini@kernel.org>, Julien Grall <julien@xen.org>, Volodymyr Babchuk
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=?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= <roger.pau@citrix.com>, Dario Faggioli
<dfaggioli@suse.com>
Subject: [PATCH 8/9] xen/sched: eliminate sched_tick_suspend() and sched_tick_resume()
Date: Wed, 18 Dec 2019 08:48:58 +0100
Message-ID: <20191218074859.21665-9-jgross@suse.com>
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sched_tick_suspend() and sched_tick_resume() only call rcu related
functions, so eliminate them and do the rcu_idle_timer*() calling in
rcu_idle_[enter|exit]().
Signed-off-by: Juergen Gross <jgross@suse.com>
---
xen/arch/arm/domain.c | 6 +++---
xen/arch/x86/acpi/cpu_idle.c | 15 ++++++++-------
xen/arch/x86/cpu/mwait-idle.c | 8 ++++----
xen/common/rcupdate.c | 7 +++++--
xen/common/sched/schedule.c | 12 ------------
xen/include/xen/rcupdate.h | 3 ---
xen/include/xen/sched.h | 2 --
7 files changed, 20 insertions(+), 33 deletions(-)
diff --git a/xen/arch/arm/domain.c b/xen/arch/arm/domain.c
index c0a13aa0ab..aa3df3b3ba 100644
--- a/xen/arch/arm/domain.c
+++ b/xen/arch/arm/domain.c
@@ -46,8 +46,8 @@ static void do_idle(void)
{
unsigned int cpu = smp_processor_id();
- sched_tick_suspend();
- /* sched_tick_suspend() can raise TIMER_SOFTIRQ. Process it now. */
+ rcu_idle_enter(cpu);
+ /* rcu_idle_enter() can raise TIMER_SOFTIRQ. Process it now. */
process_pending_softirqs();
local_irq_disable();
@@ -58,7 +58,7 @@ static void do_idle(void)
}
local_irq_enable();
- sched_tick_resume();
+ rcu_idle_exit(cpu);
}
void idle_loop(void)
diff --git a/xen/arch/x86/acpi/cpu_idle.c b/xen/arch/x86/acpi/cpu_idle.c
index 5edd1844f4..2676f0d7da 100644
--- a/xen/arch/x86/acpi/cpu_idle.c
+++ b/xen/arch/x86/acpi/cpu_idle.c
@@ -599,7 +599,8 @@ void update_idle_stats(struct acpi_processor_power *power,
static void acpi_processor_idle(void)
{
- struct acpi_processor_power *power = processor_powers[smp_processor_id()];
+ unsigned int cpu = smp_processor_id();
+ struct acpi_processor_power *power = processor_powers[cpu];
struct acpi_processor_cx *cx = NULL;
int next_state;
uint64_t t1, t2 = 0;
@@ -648,8 +649,8 @@ static void acpi_processor_idle(void)
cpufreq_dbs_timer_suspend();
- sched_tick_suspend();
- /* sched_tick_suspend() can raise TIMER_SOFTIRQ. Process it now. */
+ rcu_idle_enter(cpu);
+ /* rcu_idle_enter() can raise TIMER_SOFTIRQ. Process it now. */
process_pending_softirqs();
/*
@@ -658,10 +659,10 @@ static void acpi_processor_idle(void)
*/
local_irq_disable();
- if ( !cpu_is_haltable(smp_processor_id()) )
+ if ( !cpu_is_haltable(cpu) )
{
local_irq_enable();
- sched_tick_resume();
+ rcu_idle_exit(cpu);
cpufreq_dbs_timer_resume();
return;
}
@@ -786,7 +787,7 @@ static void acpi_processor_idle(void)
/* Now in C0 */
power->last_state = &power->states[0];
local_irq_enable();
- sched_tick_resume();
+ rcu_idle_exit(cpu);
cpufreq_dbs_timer_resume();
return;
}
@@ -794,7 +795,7 @@ static void acpi_processor_idle(void)
/* Now in C0 */
power->last_state = &power->states[0];
- sched_tick_resume();
+ rcu_idle_exit(cpu);
cpufreq_dbs_timer_resume();
if ( cpuidle_current_governor->reflect )
diff --git a/xen/arch/x86/cpu/mwait-idle.c b/xen/arch/x86/cpu/mwait-idle.c
index 52413e6da1..f49b04c45b 100644
--- a/xen/arch/x86/cpu/mwait-idle.c
+++ b/xen/arch/x86/cpu/mwait-idle.c
@@ -755,8 +755,8 @@ static void mwait_idle(void)
cpufreq_dbs_timer_suspend();
- sched_tick_suspend();
- /* sched_tick_suspend() can raise TIMER_SOFTIRQ. Process it now. */
+ rcu_idle_enter(cpu);
+ /* rcu_idle_enter() can raise TIMER_SOFTIRQ. Process it now. */
process_pending_softirqs();
/* Interrupts must be disabled for C2 and higher transitions. */
@@ -764,7 +764,7 @@ static void mwait_idle(void)
if (!cpu_is_haltable(cpu)) {
local_irq_enable();
- sched_tick_resume();
+ rcu_idle_exit(cpu);
cpufreq_dbs_timer_resume();
return;
}
@@ -806,7 +806,7 @@ static void mwait_idle(void)
if (!(lapic_timer_reliable_states & (1 << cstate)))
lapic_timer_on();
- sched_tick_resume();
+ rcu_idle_exit(cpu);
cpufreq_dbs_timer_resume();
if ( cpuidle_current_governor->reflect )
diff --git a/xen/common/rcupdate.c b/xen/common/rcupdate.c
index a56103c6f7..cb712c8690 100644
--- a/xen/common/rcupdate.c
+++ b/xen/common/rcupdate.c
@@ -459,7 +459,7 @@ int rcu_needs_cpu(int cpu)
* periodically poke rcu_pedning(), so that it will invoke the callback
* not too late after the end of the grace period.
*/
-void rcu_idle_timer_start()
+static void rcu_idle_timer_start(void)
{
struct rcu_data *rdp = &this_cpu(rcu_data);
@@ -475,7 +475,7 @@ void rcu_idle_timer_start()
rdp->idle_timer_active = true;
}
-void rcu_idle_timer_stop()
+static void rcu_idle_timer_stop(void)
{
struct rcu_data *rdp = &this_cpu(rcu_data);
@@ -633,10 +633,13 @@ void rcu_idle_enter(unsigned int cpu)
* Se the comment before cpumask_andnot() in rcu_start_batch().
*/
smp_mb();
+
+ rcu_idle_timer_start();
}
void rcu_idle_exit(unsigned int cpu)
{
+ rcu_idle_timer_stop();
ASSERT(cpumask_test_cpu(cpu, &rcu_ctrlblk.idle_cpumask));
cpumask_clear_cpu(cpu, &rcu_ctrlblk.idle_cpumask);
}
diff --git a/xen/common/sched/schedule.c b/xen/common/sched/schedule.c
index 3307e88b6c..ddbface969 100644
--- a/xen/common/sched/schedule.c
+++ b/xen/common/sched/schedule.c
@@ -3265,18 +3265,6 @@ void schedule_dump(struct cpupool *c)
rcu_read_unlock(&sched_res_rculock);
}
-void sched_tick_suspend(void)
-{
- rcu_idle_enter(smp_processor_id());
- rcu_idle_timer_start();
-}
-
-void sched_tick_resume(void)
-{
- rcu_idle_timer_stop();
- rcu_idle_exit(smp_processor_id());
-}
-
void wait(void)
{
schedule();
diff --git a/xen/include/xen/rcupdate.h b/xen/include/xen/rcupdate.h
index 13850865ed..174d058113 100644
--- a/xen/include/xen/rcupdate.h
+++ b/xen/include/xen/rcupdate.h
@@ -148,7 +148,4 @@ int rcu_barrier(void);
void rcu_idle_enter(unsigned int cpu);
void rcu_idle_exit(unsigned int cpu);
-void rcu_idle_timer_start(void);
-void rcu_idle_timer_stop(void);
-
#endif /* __XEN_RCUPDATE_H */
diff --git a/xen/include/xen/sched.h b/xen/include/xen/sched.h
index b2f48a3512..e4263de2d5 100644
--- a/xen/include/xen/sched.h
+++ b/xen/include/xen/sched.h
@@ -688,8 +688,6 @@ void sched_destroy_domain(struct domain *d);
long sched_adjust(struct domain *, struct xen_domctl_scheduler_op *);
long sched_adjust_global(struct xen_sysctl_scheduler_op *);
int sched_id(void);
-void sched_tick_suspend(void);
-void sched_tick_resume(void);
void vcpu_wake(struct vcpu *v);
long vcpu_yield(void);
void vcpu_sleep_nosync(struct vcpu *v);
--
2.16.4
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From: Juergen Gross <jgross@suse.com>
To: <xen-devel@lists.xenproject.org>
CC: Juergen Gross <jgross@suse.com>, Dario Faggioli <dfaggioli@suse.com>,
George Dunlap <george.dunlap@eu.citrix.com>, Andrew Cooper
<andrew.cooper3@citrix.com>, Ian Jackson <ian.jackson@eu.citrix.com>, "Jan
Beulich" <jbeulich@suse.com>, Julien Grall <julien@xen.org>, "Konrad
Rzeszutek Wilk" <konrad.wilk@oracle.com>, Stefano Stabellini
<sstabellini@kernel.org>, Wei Liu <wl@xen.org>, Josh Whitehead
<josh.whitehead@dornerworks.com>, Stewart Hildebrand
<stewart.hildebrand@dornerworks.com>, Meng Xu <mengxu@cis.upenn.edu>
Subject: [PATCH 9/9] xen/sched: add const qualifier where appropriate
Date: Wed, 18 Dec 2019 08:48:59 +0100
Message-ID: <20191218074859.21665-10-jgross@suse.com>
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Make use of the const qualifier more often in scheduling code.
Signed-off-by: Juergen Gross <jgross@suse.com>
---
xen/common/sched/cpupool.c | 2 +-
xen/common/sched/sched_arinc653.c | 4 +--
xen/common/sched/sched_credit.c | 44 +++++++++++++++++----------------
xen/common/sched/sched_credit2.c | 52 ++++++++++++++++++++-------------------
xen/common/sched/sched_null.c | 17 +++++++------
xen/common/sched/sched_rt.c | 32 ++++++++++++------------
xen/common/sched/schedule.c | 25 ++++++++++---------
xen/include/xen/sched.h | 9 ++++---
8 files changed, 96 insertions(+), 89 deletions(-)
diff --git a/xen/common/sched/cpupool.c b/xen/common/sched/cpupool.c
index 14212bb4ae..a6c04c46cb 100644
--- a/xen/common/sched/cpupool.c
+++ b/xen/common/sched/cpupool.c
@@ -882,7 +882,7 @@ int cpupool_get_id(const struct domain *d)
return d->cpupool ? d->cpupool->cpupool_id : CPUPOOLID_NONE;
}
-cpumask_t *cpupool_valid_cpus(struct cpupool *pool)
+const cpumask_t *cpupool_valid_cpus(const struct cpupool *pool)
{
return pool->cpu_valid;
}
diff --git a/xen/common/sched/sched_arinc653.c b/xen/common/sched/sched_arinc653.c
index dc45378952..0de4ba6b2c 100644
--- a/xen/common/sched/sched_arinc653.c
+++ b/xen/common/sched/sched_arinc653.c
@@ -608,7 +608,7 @@ static struct sched_resource *
a653sched_pick_resource(const struct scheduler *ops,
const struct sched_unit *unit)
{
- cpumask_t *online;
+ const cpumask_t *online;
unsigned int cpu;
/*
@@ -639,7 +639,7 @@ a653_switch_sched(struct scheduler *new_ops, unsigned int cpu,
void *pdata, void *vdata)
{
struct sched_resource *sr = get_sched_res(cpu);
- arinc653_unit_t *svc = vdata;
+ const arinc653_unit_t *svc = vdata;
ASSERT(!pdata && svc && is_idle_unit(svc->unit));
diff --git a/xen/common/sched/sched_credit.c b/xen/common/sched/sched_credit.c
index 05930261d9..f2fc1cca5a 100644
--- a/xen/common/sched/sched_credit.c
+++ b/xen/common/sched/sched_credit.c
@@ -233,7 +233,7 @@ static void csched_tick(void *_cpu);
static void csched_acct(void *dummy);
static inline int
-__unit_on_runq(struct csched_unit *svc)
+__unit_on_runq(const struct csched_unit *svc)
{
return !list_empty(&svc->runq_elem);
}
@@ -349,11 +349,11 @@ boolean_param("tickle_one_idle_cpu", opt_tickle_one_idle);
DEFINE_PER_CPU(unsigned int, last_tickle_cpu);
-static inline void __runq_tickle(struct csched_unit *new)
+static inline void __runq_tickle(const struct csched_unit *new)
{
unsigned int cpu = sched_unit_master(new->unit);
- struct sched_resource *sr = get_sched_res(cpu);
- struct sched_unit *unit = new->unit;
+ const struct sched_resource *sr = get_sched_res(cpu);
+ const struct sched_unit *unit = new->unit;
struct csched_unit * const cur = CSCHED_UNIT(curr_on_cpu(cpu));
struct csched_private *prv = CSCHED_PRIV(sr->scheduler);
cpumask_t mask, idle_mask, *online;
@@ -509,7 +509,7 @@ static inline void __runq_tickle(struct csched_unit *new)
static void
csched_free_pdata(const struct scheduler *ops, void *pcpu, int cpu)
{
- struct csched_private *prv = CSCHED_PRIV(ops);
+ const struct csched_private *prv = CSCHED_PRIV(ops);
/*
* pcpu either points to a valid struct csched_pcpu, or is NULL, if we're
@@ -652,7 +652,7 @@ csched_switch_sched(struct scheduler *new_ops, unsigned int cpu,
#ifndef NDEBUG
static inline void
-__csched_unit_check(struct sched_unit *unit)
+__csched_unit_check(const struct sched_unit *unit)
{
struct csched_unit * const svc = CSCHED_UNIT(unit);
struct csched_dom * const sdom = svc->sdom;
@@ -700,8 +700,8 @@ __csched_vcpu_is_cache_hot(const struct csched_private *prv,
static inline int
__csched_unit_is_migrateable(const struct csched_private *prv,
- struct sched_unit *unit,
- int dest_cpu, cpumask_t *mask)
+ const struct sched_unit *unit,
+ int dest_cpu, const cpumask_t *mask)
{
const struct csched_unit *svc = CSCHED_UNIT(unit);
/*
@@ -725,7 +725,7 @@ _csched_cpu_pick(const struct scheduler *ops, const struct sched_unit *unit,
/* We must always use cpu's scratch space */
cpumask_t *cpus = cpumask_scratch_cpu(cpu);
cpumask_t idlers;
- cpumask_t *online = cpupool_domain_master_cpumask(unit->domain);
+ const cpumask_t *online = cpupool_domain_master_cpumask(unit->domain);
struct csched_pcpu *spc = NULL;
int balance_step;
@@ -932,7 +932,7 @@ csched_unit_acct(struct csched_private *prv, unsigned int cpu)
{
struct sched_unit *currunit = current->sched_unit;
struct csched_unit * const svc = CSCHED_UNIT(currunit);
- struct sched_resource *sr = get_sched_res(cpu);
+ const struct sched_resource *sr = get_sched_res(cpu);
const struct scheduler *ops = sr->scheduler;
ASSERT( sched_unit_master(currunit) == cpu );
@@ -1084,7 +1084,7 @@ csched_unit_sleep(const struct scheduler *ops, struct sched_unit *unit)
{
struct csched_unit * const svc = CSCHED_UNIT(unit);
unsigned int cpu = sched_unit_master(unit);
- struct sched_resource *sr = get_sched_res(cpu);
+ const struct sched_resource *sr = get_sched_res(cpu);
SCHED_STAT_CRANK(unit_sleep);
@@ -1577,7 +1577,7 @@ static void
csched_tick(void *_cpu)
{
unsigned int cpu = (unsigned long)_cpu;
- struct sched_resource *sr = get_sched_res(cpu);
+ const struct sched_resource *sr = get_sched_res(cpu);
struct csched_pcpu *spc = CSCHED_PCPU(cpu);
struct csched_private *prv = CSCHED_PRIV(sr->scheduler);
@@ -1604,7 +1604,7 @@ csched_tick(void *_cpu)
static struct csched_unit *
csched_runq_steal(int peer_cpu, int cpu, int pri, int balance_step)
{
- struct sched_resource *sr = get_sched_res(cpu);
+ const struct sched_resource *sr = get_sched_res(cpu);
const struct csched_private * const prv = CSCHED_PRIV(sr->scheduler);
const struct csched_pcpu * const peer_pcpu = CSCHED_PCPU(peer_cpu);
struct csched_unit *speer;
@@ -1681,10 +1681,10 @@ static struct csched_unit *
csched_load_balance(struct csched_private *prv, int cpu,
struct csched_unit *snext, bool *stolen)
{
- struct cpupool *c = get_sched_res(cpu)->cpupool;
+ const struct cpupool *c = get_sched_res(cpu)->cpupool;
struct csched_unit *speer;
cpumask_t workers;
- cpumask_t *online = c->res_valid;
+ const cpumask_t *online = c->res_valid;
int peer_cpu, first_cpu, peer_node, bstep;
int node = cpu_to_node(cpu);
@@ -2008,7 +2008,7 @@ out:
}
static void
-csched_dump_unit(struct csched_unit *svc)
+csched_dump_unit(const struct csched_unit *svc)
{
struct csched_dom * const sdom = svc->sdom;
@@ -2041,10 +2041,11 @@ csched_dump_unit(struct csched_unit *svc)
static void
csched_dump_pcpu(const struct scheduler *ops, int cpu)
{
- struct list_head *runq, *iter;
+ const struct list_head *runq;
+ struct list_head *iter;
struct csched_private *prv = CSCHED_PRIV(ops);
- struct csched_pcpu *spc;
- struct csched_unit *svc;
+ const struct csched_pcpu *spc;
+ const struct csched_unit *svc;
spinlock_t *lock;
unsigned long flags;
int loop;
@@ -2132,12 +2133,13 @@ csched_dump(const struct scheduler *ops)
loop = 0;
list_for_each( iter_sdom, &prv->active_sdom )
{
- struct csched_dom *sdom;
+ const struct csched_dom *sdom;
+
sdom = list_entry(iter_sdom, struct csched_dom, active_sdom_elem);
list_for_each( iter_svc, &sdom->active_unit )
{
- struct csched_unit *svc;
+ const struct csched_unit *svc;
spinlock_t *lock;
svc = list_entry(iter_svc, struct csched_unit, active_unit_elem);
diff --git a/xen/common/sched/sched_credit2.c b/xen/common/sched/sched_credit2.c
index f9e521a3a8..1ed7bbde2f 100644
--- a/xen/common/sched/sched_credit2.c
+++ b/xen/common/sched/sched_credit2.c
@@ -692,7 +692,7 @@ void smt_idle_mask_clear(unsigned int cpu, cpumask_t *mask)
*/
static int get_fallback_cpu(struct csched2_unit *svc)
{
- struct sched_unit *unit = svc->unit;
+ const struct sched_unit *unit = svc->unit;
unsigned int bs;
SCHED_STAT_CRANK(need_fallback_cpu);
@@ -774,7 +774,7 @@ static int get_fallback_cpu(struct csched2_unit *svc)
*
* FIXME: Do pre-calculated division?
*/
-static void t2c_update(struct csched2_runqueue_data *rqd, s_time_t time,
+static void t2c_update(const struct csched2_runqueue_data *rqd, s_time_t time,
struct csched2_unit *svc)
{
uint64_t val = time * rqd->max_weight + svc->residual;
@@ -783,7 +783,8 @@ static void t2c_update(struct csched2_runqueue_data *rqd, s_time_t time,
svc->credit -= val;
}
-static s_time_t c2t(struct csched2_runqueue_data *rqd, s_time_t credit, struct csched2_unit *svc)
+static s_time_t c2t(const struct csched2_runqueue_data *rqd, s_time_t credit,
+ const struct csched2_unit *svc)
{
return credit * svc->weight / rqd->max_weight;
}
@@ -792,7 +793,7 @@ static s_time_t c2t(struct csched2_runqueue_data *rqd, s_time_t credit, struct c
* Runqueue related code.
*/
-static inline int unit_on_runq(struct csched2_unit *svc)
+static inline int unit_on_runq(const struct csched2_unit *svc)
{
return !list_empty(&svc->runq_elem);
}
@@ -849,9 +850,9 @@ static inline bool same_core(unsigned int cpua, unsigned int cpub)
}
static unsigned int
-cpu_to_runqueue(struct csched2_private *prv, unsigned int cpu)
+cpu_to_runqueue(const struct csched2_private *prv, unsigned int cpu)
{
- struct csched2_runqueue_data *rqd;
+ const struct csched2_runqueue_data *rqd;
unsigned int rqi;
for ( rqi = 0; rqi < nr_cpu_ids; rqi++ )
@@ -917,7 +918,7 @@ static void update_max_weight(struct csched2_runqueue_data *rqd, int new_weight,
list_for_each( iter, &rqd->svc )
{
- struct csched2_unit * svc = list_entry(iter, struct csched2_unit, rqd_elem);
+ const struct csched2_unit * svc = list_entry(iter, struct csched2_unit, rqd_elem);
if ( svc->weight > max_weight )
max_weight = svc->weight;
@@ -970,7 +971,7 @@ _runq_assign(struct csched2_unit *svc, struct csched2_runqueue_data *rqd)
}
static void
-runq_assign(const struct scheduler *ops, struct sched_unit *unit)
+runq_assign(const struct scheduler *ops, const struct sched_unit *unit)
{
struct csched2_unit *svc = unit->priv;
@@ -997,7 +998,7 @@ _runq_deassign(struct csched2_unit *svc)
}
static void
-runq_deassign(const struct scheduler *ops, struct sched_unit *unit)
+runq_deassign(const struct scheduler *ops, const struct sched_unit *unit)
{
struct csched2_unit *svc = unit->priv;
@@ -1203,7 +1204,7 @@ static void
update_svc_load(const struct scheduler *ops,
struct csched2_unit *svc, int change, s_time_t now)
{
- struct csched2_private *prv = csched2_priv(ops);
+ const struct csched2_private *prv = csched2_priv(ops);
s_time_t delta, unit_load;
unsigned int P, W;
@@ -1362,11 +1363,11 @@ static inline bool is_preemptable(const struct csched2_unit *svc,
* Within the same class, the highest difference of credit.
*/
static s_time_t tickle_score(const struct scheduler *ops, s_time_t now,
- struct csched2_unit *new, unsigned int cpu)
+ const struct csched2_unit *new, unsigned int cpu)
{
struct csched2_runqueue_data *rqd = c2rqd(ops, cpu);
struct csched2_unit * cur = csched2_unit(curr_on_cpu(cpu));
- struct csched2_private *prv = csched2_priv(ops);
+ const struct csched2_private *prv = csched2_priv(ops);
s_time_t score;
/*
@@ -1441,7 +1442,7 @@ runq_tickle(const struct scheduler *ops, struct csched2_unit *new, s_time_t now)
struct sched_unit *unit = new->unit;
unsigned int bs, cpu = sched_unit_master(unit);
struct csched2_runqueue_data *rqd = c2rqd(ops, cpu);
- cpumask_t *online = cpupool_domain_master_cpumask(unit->domain);
+ const cpumask_t *online = cpupool_domain_master_cpumask(unit->domain);
cpumask_t mask;
ASSERT(new->rqd == rqd);
@@ -2005,7 +2006,7 @@ static void replenish_domain_budget(void* data)
#ifndef NDEBUG
static inline void
-csched2_unit_check(struct sched_unit *unit)
+csched2_unit_check(const struct sched_unit *unit)
{
struct csched2_unit * const svc = csched2_unit(unit);
struct csched2_dom * const sdom = svc->sdom;
@@ -2541,8 +2542,8 @@ static void migrate(const struct scheduler *ops,
* - svc is not already flagged to migrate,
* - if svc is allowed to run on at least one of the pcpus of rqd.
*/
-static bool unit_is_migrateable(struct csched2_unit *svc,
- struct csched2_runqueue_data *rqd)
+static bool unit_is_migrateable(const struct csched2_unit *svc,
+ const struct csched2_runqueue_data *rqd)
{
struct sched_unit *unit = svc->unit;
int cpu = sched_unit_master(unit);
@@ -3076,7 +3077,7 @@ csched2_free_domdata(const struct scheduler *ops, void *data)
static void
csched2_unit_insert(const struct scheduler *ops, struct sched_unit *unit)
{
- struct csched2_unit *svc = unit->priv;
+ const struct csched2_unit *svc = unit->priv;
struct csched2_dom * const sdom = svc->sdom;
spinlock_t *lock;
@@ -3142,7 +3143,7 @@ csched2_runtime(const struct scheduler *ops, int cpu,
int rt_credit; /* Proposed runtime measured in credits */
struct csched2_runqueue_data *rqd = c2rqd(ops, cpu);
struct list_head *runq = &rqd->runq;
- struct csched2_private *prv = csched2_priv(ops);
+ const struct csched2_private *prv = csched2_priv(ops);
/*
* If we're idle, just stay so. Others (or external events)
@@ -3239,7 +3240,7 @@ runq_candidate(struct csched2_runqueue_data *rqd,
unsigned int *skipped)
{
struct list_head *iter, *temp;
- struct sched_resource *sr = get_sched_res(cpu);
+ const struct sched_resource *sr = get_sched_res(cpu);
struct csched2_unit *snext = NULL;
struct csched2_private *prv = csched2_priv(sr->scheduler);
bool yield = false, soft_aff_preempt = false;
@@ -3603,7 +3604,8 @@ static void csched2_schedule(
}
static void
-csched2_dump_unit(struct csched2_private *prv, struct csched2_unit *svc)
+csched2_dump_unit(const struct csched2_private *prv,
+ const struct csched2_unit *svc)
{
printk("[%i.%i] flags=%x cpu=%i",
svc->unit->domain->domain_id,
@@ -3626,8 +3628,8 @@ csched2_dump_unit(struct csched2_private *prv, struct csched2_unit *svc)
static inline void
dump_pcpu(const struct scheduler *ops, int cpu)
{
- struct csched2_private *prv = csched2_priv(ops);
- struct csched2_unit *svc;
+ const struct csched2_private *prv = csched2_priv(ops);
+ const struct csched2_unit *svc;
printk("CPU[%02d] runq=%d, sibling={%*pbl}, core={%*pbl}\n",
cpu, c2r(cpu),
@@ -3695,8 +3697,8 @@ csched2_dump(const struct scheduler *ops)
loop = 0;
list_for_each( iter_sdom, &prv->sdom )
{
- struct csched2_dom *sdom;
- struct sched_unit *unit;
+ const struct csched2_dom *sdom;
+ const struct sched_unit *unit;
sdom = list_entry(iter_sdom, struct csched2_dom, sdom_elem);
@@ -3737,7 +3739,7 @@ csched2_dump(const struct scheduler *ops)
printk("RUNQ:\n");
list_for_each( iter, runq )
{
- struct csched2_unit *svc = runq_elem(iter);
+ const struct csched2_unit *svc = runq_elem(iter);
if ( svc )
{
diff --git a/xen/common/sched/sched_null.c b/xen/common/sched/sched_null.c
index 11aab25743..4906e02c62 100644
--- a/xen/common/sched/sched_null.c
+++ b/xen/common/sched/sched_null.c
@@ -278,12 +278,12 @@ static void null_free_domdata(const struct scheduler *ops, void *data)
* So this is not part of any hot path.
*/
static struct sched_resource *
-pick_res(struct null_private *prv, const struct sched_unit *unit)
+pick_res(const struct null_private *prv, const struct sched_unit *unit)
{
unsigned int bs;
unsigned int cpu = sched_unit_master(unit), new_cpu;
- cpumask_t *cpus = cpupool_domain_master_cpumask(unit->domain);
- struct null_pcpu *npc = get_sched_res(cpu)->sched_priv;
+ const cpumask_t *cpus = cpupool_domain_master_cpumask(unit->domain);
+ const struct null_pcpu *npc = get_sched_res(cpu)->sched_priv;
ASSERT(spin_is_locked(get_sched_res(cpu)->schedule_lock));
@@ -375,7 +375,7 @@ static void unit_assign(struct null_private *prv, struct sched_unit *unit,
}
/* Returns true if a cpu was tickled */
-static bool unit_deassign(struct null_private *prv, struct sched_unit *unit)
+static bool unit_deassign(struct null_private *prv, const struct sched_unit *unit)
{
unsigned int bs;
unsigned int cpu = sched_unit_master(unit);
@@ -441,7 +441,7 @@ static spinlock_t *null_switch_sched(struct scheduler *new_ops,
{
struct sched_resource *sr = get_sched_res(cpu);
struct null_private *prv = null_priv(new_ops);
- struct null_unit *nvc = vdata;
+ const struct null_unit *nvc = vdata;
ASSERT(nvc && is_idle_unit(nvc->unit));
@@ -940,7 +940,8 @@ static void null_schedule(const struct scheduler *ops, struct sched_unit *prev,
prev->next_task->migrated = false;
}
-static inline void dump_unit(struct null_private *prv, struct null_unit *nvc)
+static inline void dump_unit(const struct null_private *prv,
+ const struct null_unit *nvc)
{
printk("[%i.%i] pcpu=%d", nvc->unit->domain->domain_id,
nvc->unit->unit_id, list_empty(&nvc->waitq_elem) ?
@@ -950,8 +951,8 @@ static inline void dump_unit(struct null_private *prv, struct null_unit *nvc)
static void null_dump_pcpu(const struct scheduler *ops, int cpu)
{
struct null_private *prv = null_priv(ops);
- struct null_pcpu *npc = get_sched_res(cpu)->sched_priv;
- struct null_unit *nvc;
+ const struct null_pcpu *npc = get_sched_res(cpu)->sched_priv;
+ const struct null_unit *nvc;
spinlock_t *lock;
unsigned long flags;
diff --git a/xen/common/sched/sched_rt.c b/xen/common/sched/sched_rt.c
index 8646d77343..560614ed9d 100644
--- a/xen/common/sched/sched_rt.c
+++ b/xen/common/sched/sched_rt.c
@@ -352,7 +352,7 @@ static void
rt_dump_pcpu(const struct scheduler *ops, int cpu)
{
struct rt_private *prv = rt_priv(ops);
- struct rt_unit *svc;
+ const struct rt_unit *svc;
unsigned long flags;
spin_lock_irqsave(&prv->lock, flags);
@@ -371,8 +371,8 @@ rt_dump(const struct scheduler *ops)
{
struct list_head *runq, *depletedq, *replq, *iter;
struct rt_private *prv = rt_priv(ops);
- struct rt_unit *svc;
- struct rt_dom *sdom;
+ const struct rt_unit *svc;
+ const struct rt_dom *sdom;
unsigned long flags;
spin_lock_irqsave(&prv->lock, flags);
@@ -408,7 +408,7 @@ rt_dump(const struct scheduler *ops)
printk("Domain info:\n");
list_for_each ( iter, &prv->sdom )
{
- struct sched_unit *unit;
+ const struct sched_unit *unit;
sdom = list_entry(iter, struct rt_dom, sdom_elem);
printk("\tdomain: %d\n", sdom->dom->domain_id);
@@ -509,7 +509,7 @@ deadline_queue_insert(struct rt_unit * (*qelem)(struct list_head *),
list_for_each ( iter, queue )
{
- struct rt_unit * iter_svc = (*qelem)(iter);
+ const struct rt_unit * iter_svc = (*qelem)(iter);
if ( compare_unit_priority(svc, iter_svc) > 0 )
break;
pos = true;
@@ -547,7 +547,7 @@ replq_remove(const struct scheduler *ops, struct rt_unit *svc)
*/
if ( !list_empty(replq) )
{
- struct rt_unit *svc_next = replq_elem(replq->next);
+ const struct rt_unit *svc_next = replq_elem(replq->next);
set_timer(&prv->repl_timer, svc_next->cur_deadline);
}
else
@@ -604,7 +604,7 @@ static void
replq_reinsert(const struct scheduler *ops, struct rt_unit *svc)
{
struct list_head *replq = rt_replq(ops);
- struct rt_unit *rearm_svc = svc;
+ const struct rt_unit *rearm_svc = svc;
bool rearm = false;
ASSERT( unit_on_replq(svc) );
@@ -640,7 +640,7 @@ static struct sched_resource *
rt_res_pick_locked(const struct sched_unit *unit, unsigned int locked_cpu)
{
cpumask_t *cpus = cpumask_scratch_cpu(locked_cpu);
- cpumask_t *online;
+ const cpumask_t *online;
int cpu;
online = cpupool_domain_master_cpumask(unit->domain);
@@ -1028,7 +1028,7 @@ runq_pick(const struct scheduler *ops, const cpumask_t *mask, unsigned int cpu)
struct rt_unit *svc = NULL;
struct rt_unit *iter_svc = NULL;
cpumask_t *cpu_common = cpumask_scratch_cpu(cpu);
- cpumask_t *online;
+ const cpumask_t *online;
list_for_each ( iter, runq )
{
@@ -1197,15 +1197,15 @@ rt_unit_sleep(const struct scheduler *ops, struct sched_unit *unit)
* lock is grabbed before calling this function
*/
static void
-runq_tickle(const struct scheduler *ops, struct rt_unit *new)
+runq_tickle(const struct scheduler *ops, const struct rt_unit *new)
{
struct rt_private *prv = rt_priv(ops);
- struct rt_unit *latest_deadline_unit = NULL; /* lowest priority */
- struct rt_unit *iter_svc;
- struct sched_unit *iter_unit;
+ const struct rt_unit *latest_deadline_unit = NULL; /* lowest priority */
+ const struct rt_unit *iter_svc;
+ const struct sched_unit *iter_unit;
int cpu = 0, cpu_to_tickle = 0;
cpumask_t *not_tickled = cpumask_scratch_cpu(smp_processor_id());
- cpumask_t *online;
+ const cpumask_t *online;
if ( new == NULL || is_idle_unit(new->unit) )
return;
@@ -1379,7 +1379,7 @@ rt_dom_cntl(
{
struct rt_private *prv = rt_priv(ops);
struct rt_unit *svc;
- struct sched_unit *unit;
+ const struct sched_unit *unit;
unsigned long flags;
int rc = 0;
struct xen_domctl_schedparam_vcpu local_sched;
@@ -1484,7 +1484,7 @@ rt_dom_cntl(
*/
static void repl_timer_handler(void *data){
s_time_t now;
- struct scheduler *ops = data;
+ const struct scheduler *ops = data;
struct rt_private *prv = rt_priv(ops);
struct list_head *replq = rt_replq(ops);
struct list_head *runq = rt_runq(ops);
diff --git a/xen/common/sched/schedule.c b/xen/common/sched/schedule.c
index ddbface969..1d98e1fa8d 100644
--- a/xen/common/sched/schedule.c
+++ b/xen/common/sched/schedule.c
@@ -175,7 +175,7 @@ static inline struct scheduler *dom_scheduler(const struct domain *d)
static inline struct scheduler *unit_scheduler(const struct sched_unit *unit)
{
- struct domain *d = unit->domain;
+ const struct domain *d = unit->domain;
if ( likely(d->cpupool != NULL) )
return d->cpupool->sched;
@@ -202,7 +202,7 @@ static inline struct scheduler *vcpu_scheduler(const struct vcpu *v)
}
#define VCPU2ONLINE(_v) cpupool_domain_master_cpumask((_v)->domain)
-static inline void trace_runstate_change(struct vcpu *v, int new_state)
+static inline void trace_runstate_change(const struct vcpu *v, int new_state)
{
struct { uint32_t vcpu:16, domain:16; } d;
uint32_t event;
@@ -220,7 +220,7 @@ static inline void trace_runstate_change(struct vcpu *v, int new_state)
__trace_var(event, 1/*tsc*/, sizeof(d), &d);
}
-static inline void trace_continue_running(struct vcpu *v)
+static inline void trace_continue_running(const struct vcpu *v)
{
struct { uint32_t vcpu:16, domain:16; } d;
@@ -302,7 +302,8 @@ void sched_guest_idle(void (*idle) (void), unsigned int cpu)
atomic_dec(&per_cpu(sched_urgent_count, cpu));
}
-void vcpu_runstate_get(struct vcpu *v, struct vcpu_runstate_info *runstate)
+void vcpu_runstate_get(const struct vcpu *v,
+ struct vcpu_runstate_info *runstate)
{
spinlock_t *lock;
s_time_t delta;
@@ -324,7 +325,7 @@ void vcpu_runstate_get(struct vcpu *v, struct vcpu_runstate_info *runstate)
uint64_t get_cpu_idle_time(unsigned int cpu)
{
struct vcpu_runstate_info state = { 0 };
- struct vcpu *v = idle_vcpu[cpu];
+ const struct vcpu *v = idle_vcpu[cpu];
if ( cpu_online(cpu) && v )
vcpu_runstate_get(v, &state);
@@ -392,7 +393,7 @@ static void sched_free_unit_mem(struct sched_unit *unit)
static void sched_free_unit(struct sched_unit *unit, struct vcpu *v)
{
- struct vcpu *vunit;
+ const struct vcpu *vunit;
unsigned int cnt = 0;
/* Don't count to be released vcpu, might be not in vcpu list yet. */
@@ -522,7 +523,7 @@ static unsigned int sched_select_initial_cpu(const struct vcpu *v)
int sched_init_vcpu(struct vcpu *v)
{
- struct domain *d = v->domain;
+ const struct domain *d = v->domain;
struct sched_unit *unit;
unsigned int processor;
@@ -913,7 +914,7 @@ static void sched_unit_move_locked(struct sched_unit *unit,
unsigned int new_cpu)
{
unsigned int old_cpu = unit->res->master_cpu;
- struct vcpu *v;
+ const struct vcpu *v;
rcu_read_lock(&sched_res_rculock);
@@ -1090,7 +1091,7 @@ static bool sched_check_affinity_broken(const struct sched_unit *unit)
return false;
}
-static void sched_reset_affinity_broken(struct sched_unit *unit)
+static void sched_reset_affinity_broken(const struct sched_unit *unit)
{
struct vcpu *v;
@@ -1176,7 +1177,7 @@ void restore_vcpu_affinity(struct domain *d)
int cpu_disable_scheduler(unsigned int cpu)
{
struct domain *d;
- struct cpupool *c;
+ const struct cpupool *c;
cpumask_t online_affinity;
int ret = 0;
@@ -1251,8 +1252,8 @@ out:
static int cpu_disable_scheduler_check(unsigned int cpu)
{
struct domain *d;
- struct vcpu *v;
- struct cpupool *c;
+ const struct vcpu *v;
+ const struct cpupool *c;
c = get_sched_res(cpu)->cpupool;
if ( c == NULL )
diff --git a/xen/include/xen/sched.h b/xen/include/xen/sched.h
index e4263de2d5..fcf8e5037b 100644
--- a/xen/include/xen/sched.h
+++ b/xen/include/xen/sched.h
@@ -771,7 +771,7 @@ static inline void hypercall_cancel_continuation(struct vcpu *v)
extern struct domain *domain_list;
/* Caller must hold the domlist_read_lock or domlist_update_lock. */
-static inline struct domain *first_domain_in_cpupool( struct cpupool *c)
+static inline struct domain *first_domain_in_cpupool(const struct cpupool *c)
{
struct domain *d;
for (d = rcu_dereference(domain_list); d && d->cpupool != c;
@@ -779,7 +779,7 @@ static inline struct domain *first_domain_in_cpupool( struct cpupool *c)
return d;
}
static inline struct domain *next_domain_in_cpupool(
- struct domain *d, struct cpupool *c)
+ struct domain *d, const struct cpupool *c)
{
for (d = rcu_dereference(d->next_in_list); d && d->cpupool != c;
d = rcu_dereference(d->next_in_list));
@@ -923,7 +923,8 @@ void restore_vcpu_affinity(struct domain *d);
int vcpu_affinity_domctl(struct domain *d, uint32_t cmd,
struct xen_domctl_vcpuaffinity *vcpuaff);
-void vcpu_runstate_get(struct vcpu *v, struct vcpu_runstate_info *runstate);
+void vcpu_runstate_get(const struct vcpu *v,
+ struct vcpu_runstate_info *runstate);
uint64_t get_cpu_idle_time(unsigned int cpu);
void sched_guest_idle(void (*idle) (void), unsigned int cpu);
void scheduler_enable(void);
@@ -1042,7 +1043,7 @@ extern enum cpufreq_controller {
int cpupool_move_domain(struct domain *d, struct cpupool *c);
int cpupool_do_sysctl(struct xen_sysctl_cpupool_op *op);
int cpupool_get_id(const struct domain *d);
-cpumask_t *cpupool_valid_cpus(struct cpupool *pool);
+const cpumask_t *cpupool_valid_cpus(const struct cpupool *pool);
extern void dump_runq(unsigned char key);
void arch_do_physinfo(struct xen_sysctl_physinfo *pi);
--
2.16.4
^ permalink raw reply related [flat|nested] 6+ messages in thread
* Re: git-am doesn't strip CRLF line endings when the mbox is base64-encoded
2019-12-18 11:42 git-am doesn't strip CRLF line endings when the mbox is base64-encoded George Dunlap
@ 2019-12-18 12:15 ` George Dunlap
2019-12-18 19:41 ` Todd Zullinger
2020-01-06 11:58 ` George Dunlap
0 siblings, 2 replies; 6+ messages in thread
From: George Dunlap @ 2019-12-18 12:15 UTC (permalink / raw)
To: git
On 12/18/19 11:42 AM, George Dunlap wrote:
> Using git 2.24.0 from Debian testing.
>
> It seems that git-am will strip CRLF endings from mails before applying
> patches when the mail isn't encoded in any way. It will also decode
> base64-encoded mails. But it won't strip CRLF endings from
> base64-encoded mails.
>
> Attached are two mbox files for two different recent series.
> plainenc.am applies cleanly with `git am`, while base64enc.am doesn't.
>
> Poking around the man pages, it looks like part of the issue might be
> that the CRLF stripping is done in `git mailsplit`, before the base64
> encoding, rather than after.
Poking around -- it looks like the CRLF stripping would be better done
in `git mailinfo` after the decoding.
Also, this can *almost* be worked around using hooks -- there's an
`applypatch-msg` hook which can strip the CLRFs from the commit message,
but no hook (AFAICT) corresponding `applypatch-patch` which is run on
the patch itself before being applied.
-George
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: git-am doesn't strip CRLF line endings when the mbox is base64-encoded
2019-12-18 12:15 ` George Dunlap
@ 2019-12-18 19:41 ` Todd Zullinger
2020-01-06 11:58 ` George Dunlap
1 sibling, 0 replies; 6+ messages in thread
From: Todd Zullinger @ 2019-12-18 19:41 UTC (permalink / raw)
To: George Dunlap; +Cc: git
George Dunlap wrote:
> On 12/18/19 11:42 AM, George Dunlap wrote:
>> Using git 2.24.0 from Debian testing.
>>
>> It seems that git-am will strip CRLF endings from mails before applying
>> patches when the mail isn't encoded in any way. It will also decode
>> base64-encoded mails. But it won't strip CRLF endings from
>> base64-encoded mails.
>>
>> Attached are two mbox files for two different recent series.
>> plainenc.am applies cleanly with `git am`, while base64enc.am doesn't.
>>
>> Poking around the man pages, it looks like part of the issue might be
>> that the CRLF stripping is done in `git mailsplit`, before the base64
>> encoding, rather than after.
>
> Poking around -- it looks like the CRLF stripping would be better done
> in `git mailinfo` after the decoding.
>
> Also, this can *almost* be worked around using hooks -- there's an
> `applypatch-msg` hook which can strip the CLRFs from the commit message,
> but no hook (AFAICT) corresponding `applypatch-patch` which is run on
> the patch itself before being applied.
This came up recently in <20191130180301.5c39d8a4@lwn.net>¹.
I don't know if any of that discussion will prove useful to
you if you want to poke at this further or not.
¹ https://lore.kernel.org/git/20191130180301.5c39d8a4@lwn.net/
--
Todd
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: git-am doesn't strip CRLF line endings when the mbox is base64-encoded
2019-12-18 12:15 ` George Dunlap
2019-12-18 19:41 ` Todd Zullinger
@ 2020-01-06 11:58 ` George Dunlap
2020-01-06 17:07 ` Junio C Hamano
1 sibling, 1 reply; 6+ messages in thread
From: George Dunlap @ 2020-01-06 11:58 UTC (permalink / raw)
To: git
On 12/18/19 12:15 PM, George Dunlap wrote:
> On 12/18/19 11:42 AM, George Dunlap wrote:
>> Using git 2.24.0 from Debian testing.
>>
>> It seems that git-am will strip CRLF endings from mails before applying
>> patches when the mail isn't encoded in any way. It will also decode
>> base64-encoded mails. But it won't strip CRLF endings from
>> base64-encoded mails.
>>
>> Attached are two mbox files for two different recent series.
>> plainenc.am applies cleanly with `git am`, while base64enc.am doesn't.
>>
>> Poking around the man pages, it looks like part of the issue might be
>> that the CRLF stripping is done in `git mailsplit`, before the base64
>> encoding, rather than after.
>
> Poking around -- it looks like the CRLF stripping would be better done
> in `git mailinfo` after the decoding.
Anyone want to take this up? I mean, I could try to send a patch, but
since I've never looked at the git source code before, I'm sure it would
take me about 10x as much effort for me to do it as for someone already
familiar with the codebase.
(And I've already done that work for stackgit:
https://github.com/ctmarinas/stgit/pull/46)
-George
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: git-am doesn't strip CRLF line endings when the mbox is base64-encoded
2020-01-06 11:58 ` George Dunlap
@ 2020-01-06 17:07 ` Junio C Hamano
2020-01-06 18:10 ` George Dunlap
0 siblings, 1 reply; 6+ messages in thread
From: Junio C Hamano @ 2020-01-06 17:07 UTC (permalink / raw)
To: George Dunlap; +Cc: git
George Dunlap <george.dunlap@citrix.com> writes:
> On 12/18/19 12:15 PM, George Dunlap wrote:
>> On 12/18/19 11:42 AM, George Dunlap wrote:
>>> Using git 2.24.0 from Debian testing.
>>>
>>> It seems that git-am will strip CRLF endings from mails before applying
>>> patches when the mail isn't encoded in any way. It will also decode
>>> base64-encoded mails. But it won't strip CRLF endings from
>>> base64-encoded mails.
>>>
>>> Attached are two mbox files for two different recent series.
>>> plainenc.am applies cleanly with `git am`, while base64enc.am doesn't.
>>>
>>> Poking around the man pages, it looks like part of the issue might be
>>> that the CRLF stripping is done in `git mailsplit`, before the base64
>>> encoding, rather than after.
>>
>> Poking around -- it looks like the CRLF stripping would be better done
>> in `git mailinfo` after the decoding.
>
> Anyone want to take this up? I mean, I could try to send a patch, but
> since I've never looked at the git source code before, I'm sure it would
> take me about 10x as much effort for me to do it as for someone already
> familiar with the codebase.
Even before writing a patch, somebody needs to come up with a
sensible design first. --[no-]keep-cr is about "because transfer of
e-mail messages between MTAs and to the receiving MUA is defined in
terms of CRLF delimited lines per RFC, Git cannot tell if the CRLF
in the input was meant to be part of the patch (i.e. the diff is
describing a change between preimage and postimage of a file that
uses CRLF line endings) or they are cruft added during transit. By
default we favor LF endings so we will strip, but we leave an option
to keep CRs at the end of lines".
What you are asking for is quite different, isn't it? "We know the
CRLF in the payload is from the original because they were protected
from getting munged during the transfer by being MIME-encased.
Please tell Git to preprocess that payload to convert CRLF to LF
before treating it as a patch".
So, if you are imagining to change the meaning of --[no-]keep-cr, I
do not think it will fly (that is why I said that we need a sensible
design before a patch).
And by stepping back a bit like so, and once we start viewing this
as "after receiving a piece of e-mail from MUA (where --[no-]keep-cr
may affect the outermost CRLF line endings) and unwrapping possible
MIME-encasing, we can optionally tell Git to pass the payload
further through a preprocess filter", we'd realize that this does
not have to be limited to just running dos2unix (you may want to run
iconv to fix encodings, for example), which would mean that the new
flag may not just want to be --strip-cr, which is too limiting, but
rather want to be --filter-message=<how> where <how> could be one of
the canned preprocess filter (among which your dos2unix may exist)
or an external script.
I am not saying that "--filter-message=<how>" must be the "sensible
design" I mentioned at the beginning of this message---the above is
to illustrate what kind of thought needs to go in before even the
first line of the patch gets written.
Thanks.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: git-am doesn't strip CRLF line endings when the mbox is base64-encoded
2020-01-06 17:07 ` Junio C Hamano
@ 2020-01-06 18:10 ` George Dunlap
0 siblings, 0 replies; 6+ messages in thread
From: George Dunlap @ 2020-01-06 18:10 UTC (permalink / raw)
To: Junio C Hamano; +Cc: git
On 1/6/20 5:07 PM, Junio C Hamano wrote:
> George Dunlap <george.dunlap@citrix.com> writes:
>
>> On 12/18/19 12:15 PM, George Dunlap wrote:
>>> On 12/18/19 11:42 AM, George Dunlap wrote:
>>>> Using git 2.24.0 from Debian testing.
>>>>
>>>> It seems that git-am will strip CRLF endings from mails before applying
>>>> patches when the mail isn't encoded in any way. It will also decode
>>>> base64-encoded mails. But it won't strip CRLF endings from
>>>> base64-encoded mails.
>>>>
>>>> Attached are two mbox files for two different recent series.
>>>> plainenc.am applies cleanly with `git am`, while base64enc.am doesn't.
>>>>
>>>> Poking around the man pages, it looks like part of the issue might be
>>>> that the CRLF stripping is done in `git mailsplit`, before the base64
>>>> encoding, rather than after.
>>>
>>> Poking around -- it looks like the CRLF stripping would be better done
>>> in `git mailinfo` after the decoding.
>>
>> Anyone want to take this up? I mean, I could try to send a patch, but
>> since I've never looked at the git source code before, I'm sure it would
>> take me about 10x as much effort for me to do it as for someone already
>> familiar with the codebase.
>
> Even before writing a patch, somebody needs to come up with a
> sensible design first. --[no-]keep-cr is about "because transfer of
> e-mail messages between MTAs and to the receiving MUA is defined in
> terms of CRLF delimited lines per RFC, Git cannot tell if the CRLF
> in the input was meant to be part of the patch (i.e. the diff is
> describing a change between preimage and postimage of a file that
> uses CRLF line endings) or they are cruft added during transit. By
> default we favor LF endings so we will strip, but we leave an option
> to keep CRs at the end of lines".
>
> What you are asking for is quite different, isn't it? "We know the
> CRLF in the payload is from the original because they were protected
> from getting munged during the transfer by being MIME-encased.
> Please tell Git to preprocess that payload to convert CRLF to LF
> before treating it as a patch".
Actually that's not true. :-) The RFC specifies CRLF for text sections
regardless of the encoding:
8<----
The canonical form of any MIME "text" subtype MUST always represent a
line break as a CRLF sequence. Similarly, any occurrence of CRLF in
MIME "text" MUST represent a line break. Use of CR and LF outside of
line break sequences is also forbidden.
----->8
[1] https://tools.ietf.org/html/rfc2046#section-4.1.1
Just as for plaintext encoding, we do not, in fact, know that CRLF is in
the original; in the example I included above, I'm confident that CRLF
is *not* in the original, but was added by an MTA afterwards.
As such, at the moment what `mailsplit` does is generate a load of
non-RFC-compliant email messages (since text-plain encoded messages
won't have CRLF, in contravention of the spec), and `mailinfo`
incorrectly interprets base64-encoded sections. Moving the CR-stripping
from mailsplit to mailinfo would make them both more RFC-compliant.
(Sorry this wasn't in the original report -- I've been doing a lot more
digging since then.)
> So, if you are imagining to change the meaning of --[no-]keep-cr, I
> do not think it will fly (that is why I said that we need a sensible
> design before a patch).
>
> And by stepping back a bit like so, and once we start viewing this
> as "after receiving a piece of e-mail from MUA (where --[no-]keep-cr
> may affect the outermost CRLF line endings) and unwrapping possible
> MIME-encasing, we can optionally tell Git to pass the payload
> further through a preprocess filter", we'd realize that this does
> not have to be limited to just running dos2unix (you may want to run
> iconv to fix encodings, for example), which would mean that the new
> flag may not just want to be --strip-cr, which is too limiting, but
> rather want to be --filter-message=<how> where <how> could be one of
> the canned preprocess filter (among which your dos2unix may exist)
> or an external script.
>
> I am not saying that "--filter-message=<how>" must be the "sensible
> design" I mentioned at the beginning of this message---the above is
> to illustrate what kind of thought needs to go in before even the
> first line of the patch gets written.
As I mentioned in another thread, there's already an `applypatch-msg`
hook which can be used to do arbitrary modifications on commit messages
before applying. Another way to fix this would be to add an
`applypatch-patch` hook, which allowed you to do arbitrary modifications
on the patch before applying.
I certainly think that `applypatch-patch` would be a useful thing to
add. But since making `mailsplit` and `mailinfo` more RFC-compliant is
both good in itself, and probably easier, I still think that's the best
thing to do first.
-George
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2020-01-06 18:10 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-12-18 11:42 git-am doesn't strip CRLF line endings when the mbox is base64-encoded George Dunlap
2019-12-18 12:15 ` George Dunlap
2019-12-18 19:41 ` Todd Zullinger
2020-01-06 11:58 ` George Dunlap
2020-01-06 17:07 ` Junio C Hamano
2020-01-06 18:10 ` George Dunlap
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