From: Prem Mallappa via Libc-alpha <libc-alpha@sourceware.org>
To: libc-alpha@sourceware.org, codonell@redhat.com, schwab@suse.com,
FWeimer@redhat.com
Cc: Prem Mallappa <Premachandra.Mallappa@amd.com>
Subject: [PATCH 2/3] x86: Add AMD Zen and AVX2/AVX platform support
Date: Tue, 17 Mar 2020 10:16:45 +0530 [thread overview]
Message-ID: <20200317044646.29707-3-PMallappa@amd.com> (raw)
In-Reply-To: <20200317044646.29707-1-PMallappa@amd.com>
From: Prem Mallappa <Premachandra.Mallappa@amd.com>
Priority as below
- AVX512
- Haswell/Zen as they are superset of AVX2/AVX
- AVX2
- AVX
Signed-off-by: Prem Mallappa <Premachandra.Mallappa@amd.com>
---
sysdeps/x86/cpu-features.c | 30 ++++++++++++++++++++++--------
1 file changed, 22 insertions(+), 8 deletions(-)
diff --git a/sysdeps/x86/cpu-features.c b/sysdeps/x86/cpu-features.c
index a36f385976..2097107968 100644
--- a/sysdeps/x86/cpu-features.c
+++ b/sysdeps/x86/cpu-features.c
@@ -328,20 +328,34 @@ set_platform (struct cpu_features *cpu_features)
GLRO(dl_hwcap) |= HWCAP_X86_AVX512_1;
}
}
+ }
- if (platform == NULL
- && CPU_FEATURES_ARCH_P (cpu_features, AVX2_Usable)
- && CPU_FEATURES_ARCH_P (cpu_features, FMA_Usable)
- && CPU_FEATURES_CPU_P (cpu_features, BMI1)
- && CPU_FEATURES_CPU_P (cpu_features, BMI2)
- && CPU_FEATURES_CPU_P (cpu_features, LZCNT)
- && CPU_FEATURES_CPU_P (cpu_features, MOVBE)
- && CPU_FEATURES_CPU_P (cpu_features, POPCNT))
+ if (platform == NULL
+ && CPU_FEATURES_ARCH_P (cpu_features, AVX2_Usable)
+ && CPU_FEATURES_ARCH_P (cpu_features, FMA_Usable)
+ && CPU_FEATURES_CPU_P (cpu_features, BMI1)
+ && CPU_FEATURES_CPU_P (cpu_features, BMI2)
+ && CPU_FEATURES_CPU_P (cpu_features, LZCNT)
+ && CPU_FEATURES_CPU_P (cpu_features, MOVBE)
+ && CPU_FEATURES_CPU_P (cpu_features, POPCNT))
+ {
+ if (cpu_features->basic.kind == arch_kind_intel)
platform = "haswell";
+ else if (cpu_features->basic.kind == arch_kind_amd)
+ platform = "zen";
}
+ if (platform == NULL
+ && CPU_FEATURES_ARCH_P (cpu_features, AVX2_Usable))
+ platform = "generic-avx2";
+
+ if (platform == NULL
+ && CPU_FEATURES_ARCH_P (cpu_features, AVX_Usable))
+ platform = "generic-avx";
+
if (platform != NULL)
GLRO(dl_platform) = platform;
+
#else
GLRO(dl_hwcap) = 0;
if (CPU_FEATURES_CPU_P (cpu_features, SSE2))
--
2.20.1
next prev parent reply other threads:[~2020-03-17 4:47 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-17 4:46 [PATCH 0/3] RFC: Platform Support for AMD Zen and AVX2/AVX Prem Mallappa via Libc-alpha
2020-03-17 4:46 ` [PATCH 1/3] x86: Refactor platform support in cpu_features Prem Mallappa via Libc-alpha
2020-03-17 4:46 ` Prem Mallappa via Libc-alpha [this message]
2020-03-17 4:46 ` [PATCH 3/3] x86: test to load from PLATFORM path Prem Mallappa via Libc-alpha
2020-03-17 9:02 ` [PATCH 0/3] RFC: Platform Support for AMD Zen and AVX2/AVX Florian Weimer
2020-03-17 13:17 ` Carlos O'Donell via Libc-alpha
2020-03-17 19:27 ` Adhemerval Zanella via Libc-alpha
2020-03-17 21:37 ` Carlos O'Donell via Libc-alpha
2020-03-27 14:26 ` Florian Weimer
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
List information: https://www.gnu.org/software/libc/involved.html
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20200317044646.29707-3-PMallappa@amd.com \
--to=libc-alpha@sourceware.org \
--cc=FWeimer@redhat.com \
--cc=Premachandra.Mallappa@amd.com \
--cc=codonell@redhat.com \
--cc=prem.mallappa@gmail.com \
--cc=schwab@suse.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).