From: "H.J. Lu via Libc-alpha" <libc-alpha@sourceware.org>
To: "Carlos O'Donell" <carlos@redhat.com>
Cc: GNU C Library <libc-alpha@sourceware.org>,
Dave Martin <Dave.Martin@arm.com>,
Joseph Myers <joseph@codesourcery.com>
Subject: Re: V2 [PATCH] Deprecate SIGSTKSZ/MINSIGSTKSZ with _SC_SIGSTKSZ_SOURCE
Date: Fri, 9 Jul 2021 12:34:32 -0700 [thread overview]
Message-ID: <CAMe9rOpH0Bdo36vJqZgQTLHbHGyVrRbZ0Uoso-_Y5ETZ3AVBnQ@mail.gmail.com> (raw)
In-Reply-To: <dbc573b1-2507-1cce-101e-e26cedcc231b@redhat.com>
On Fri, Jul 9, 2021 at 11:53 AM Carlos O'Donell <carlos@redhat.com> wrote:
>
> On 10/15/20 5:22 PM, H.J. Lu via Libc-alpha wrote:
> > From a9b02d82571c0b0e0a5d4b46f0683a5341046bdf Mon Sep 17 00:00:00 2001
> > From: "H.J. Lu" <hjl.tools@gmail.com>
> > Date: Thu, 15 Oct 2020 05:21:28 -0700
> > Subject: [PATCH] Deprecate SIGSTKSZ/MINSIGSTKSZ with _SC_SIGSTKSZ_SOURCE
> > MIME-Version: 1.0
> > Content-Type: text/plain; charset=UTF-8
> > Content-Transfer-Encoding: 8bit
> >
> > When _SC_SIGSTKSZ_SOURCE is defined, deprecate SIGSTKSZ and MINSIGSTKSZ:
>
> This is approved for glibc 2.35 when the tree reopens.
>
> It is entirely my fault this won't make it into 2.34 because I've been
> prioritizing other ABI changes. Sorry for that.
>
> My feeling is that we should kick off the deprecation, allow 6 months for
> downstreams to catch FTBS, and send patches upstream for inclusion in
> subsequent distros.
>
> Please commit this when we reopen the branch for 2.35.
Will do after 2.34 is branched.
> I also think that for 2.35 we could consider PTHREAD_STACK_MIN deprecated
> in exactly the same way and at the same time? I have reviewed the PTHREAD_STACK_MIN
> non-constant changes just now.
I will submit a patch for PTHREAD_STACK_MIN after this one.
Thanks.
> Reviewed-by: Carlos O'Donell <carlos@redhat.com>
>
> > tst-minsigstksz-5.c: In function ‘do_test’:
> > tst-minsigstksz-5.c:46:3: warning: ‘__MINSIGSTKSZ’ is deprecated: Use sysconf (_SC_MINSIGSTKSZ) instead of MINSIGSTKSZ [-Wdeprecated-declarations]
> > 46 | void *stack_bottom = stack_buffer + (stack_buffer_size + MINSIGSTKSZ) / 2;
> > | ^~~~
> > In file included from ../signal/signal.h:315,
> > from ../include/signal.h:2,
> > from tst-minsigstksz-5.c:19:
> > ../sysdeps/unix/sysv/linux/bits/sigstksz.h:35:1: note: declared here
> > 35 | __MINSIGSTKSZ (void)
> > | ^~~~~~~~~~~~~
> > ---
> > sysdeps/unix/sysv/linux/Makefile | 6 ++++--
> > sysdeps/unix/sysv/linux/bits/sigstksz.h | 18 ++++++++++++++++--
> > 2 files changed, 20 insertions(+), 4 deletions(-)
> >
> > diff --git a/sysdeps/unix/sysv/linux/Makefile b/sysdeps/unix/sysv/linux/Makefile
> > index b51a02a6e6..5576c729ae 100644
> > --- a/sysdeps/unix/sysv/linux/Makefile
> > +++ b/sysdeps/unix/sysv/linux/Makefile
> > @@ -189,9 +189,11 @@ sysdep_headers += sys/timex.h bits/timex.h
> > sysdep_routines += ntp_gettime ntp_gettimex
> > endif
> >
> > +CFLAGS-SIGSTKSZ += -D_SC_SIGSTKSZ_SOURCE -Wno-error=deprecated-declarations
> > +
> > ifeq ($(subdir),signal)
> > # Compile tst-minsigstksz-5.c with _SC_SIGSTKSZ_SOURCE.
> > -CFLAGS-tst-minsigstksz-5.c += -D_SC_SIGSTKSZ_SOURCE
> > +CFLAGS-tst-minsigstksz-5.c += $(CFLAGS-SIGSTKSZ)
> >
> > tests-special += $(objpfx)tst-signal-numbers.out
> > # Depending on signal.o* is a hack. What we actually want is a dependency
> > @@ -233,7 +235,7 @@ endif
> >
> > ifeq ($(subdir),support)
> > # Compile xsigstack.c with _SC_SIGSTKSZ_SOURCE.
> > -CFLAGS-xsigstack.c += -D_SC_SIGSTKSZ_SOURCE
> > +CFLAGS-xsigstack.c += $(CFLAGS-SIGSTKSZ)
> > endif
> >
> > ifeq ($(subdir),termios)
> > diff --git a/sysdeps/unix/sysv/linux/bits/sigstksz.h b/sysdeps/unix/sysv/linux/bits/sigstksz.h
> > index cd5b3cc895..b90a614de6 100644
> > --- a/sysdeps/unix/sysv/linux/bits/sigstksz.h
> > +++ b/sysdeps/unix/sysv/linux/bits/sigstksz.h
> > @@ -23,11 +23,25 @@
> > #if __USE_SC_SIGSTKSZ
> > # include <unistd.h>
> >
> > +__attribute_deprecated_msg__ ("Use sysconf (_SC_SIGSTKSZ) instead of SIGSTKSZ")
> > +__extern_always_inline long
> > +__SIGSTKSZ (void)
> > +{
> > + return sysconf (_SC_SIGSTKSZ);
> > +}
> > +
> > +__attribute_deprecated_msg__ ("Use sysconf (_SC_MINSIGSTKSZ) instead of MINSIGSTKSZ")
> > +__extern_always_inline long
> > +__MINSIGSTKSZ (void)
> > +{
> > + return sysconf (_SC_SIGSTKSZ);
> > +}
> > +
> > /* Default stack size for a signal handler: sysconf (SC_SIGSTKSZ). */
> > # undef SIGSTKSZ
> > -# define SIGSTKSZ sysconf (_SC_SIGSTKSZ)
> > +# define SIGSTKSZ __SIGSTKSZ ()
> >
> > /* Minimum stack size for a signal handler: SIGSTKSZ. */
> > # undef MINSIGSTKSZ
> > -# define MINSIGSTKSZ SIGSTKSZ
> > +# define MINSIGSTKSZ __MINSIGSTKSZ ()
> > #endif
> > --
> > 2.26.2
> >
>
>
> --
> Cheers,
> Carlos.
>
--
H.J.
next prev parent reply other threads:[~2021-07-09 19:35 UTC|newest]
Thread overview: 69+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-10 12:19 [PATCH] sysconf: Add _SC_MINSIGSTKSZ/_SC_SIGSTKSZ [BZ #20305] H.J. Lu via Libc-alpha
2020-10-12 7:53 ` Szabolcs Nagy via Libc-alpha
2020-10-12 11:04 ` Dave Martin via Libc-alpha
2020-10-12 12:42 ` V4 " H.J. Lu via Libc-alpha
2020-10-12 13:21 ` Dave Martin via Libc-alpha
2020-10-12 14:12 ` Szabolcs Nagy via Libc-alpha
2020-10-12 14:37 ` Dave Martin via Libc-alpha
2020-10-12 15:36 ` [libc-coord] " Rich Felker
2020-10-12 22:03 ` Joseph Myers
2020-10-13 20:32 ` V5 " H.J. Lu via Libc-alpha
2020-10-14 17:47 ` Dave Martin via Libc-alpha
2020-10-14 18:07 ` Florian Weimer via Libc-alpha
2020-10-19 16:30 ` Dave Martin via Libc-alpha
2020-10-15 11:57 ` V6 " H.J. Lu via Libc-alpha
2020-10-19 15:08 ` Dave Martin via Libc-alpha
2020-10-19 21:32 ` H.J. Lu via Libc-alpha
2020-10-20 9:19 ` Dave Martin via Libc-alpha
2020-10-20 14:59 ` H.J. Lu via Libc-alpha
2020-10-20 15:22 ` Dave Martin via Libc-alpha
2020-10-20 18:19 ` V7 " H.J. Lu via Libc-alpha
2020-11-03 3:06 ` PING: " H.J. Lu via Libc-alpha
2020-11-04 16:50 ` Dave Martin via Libc-alpha
2020-11-04 17:48 ` H.J. Lu via Libc-alpha
2020-11-18 14:13 ` H.J. Lu via Libc-alpha
2020-11-18 14:25 ` Zack Weinberg
2020-11-18 14:40 ` H.J. Lu via Libc-alpha
2020-11-18 15:12 ` Zack Weinberg
2020-11-18 15:17 ` H.J. Lu via Libc-alpha
2020-11-18 15:20 ` Florian Weimer
2020-11-18 17:04 ` Dave Martin via Libc-alpha
2020-11-18 17:35 ` Florian Weimer
2020-11-18 17:48 ` H.J. Lu via Libc-alpha
2020-11-18 18:09 ` Dave Martin via Libc-alpha
2020-11-19 14:59 ` Szabolcs Nagy via Libc-alpha
2020-11-19 15:10 ` H.J. Lu via Libc-alpha
2020-11-19 15:39 ` Zack Weinberg
2020-11-19 15:51 ` Florian Weimer
2020-11-19 16:16 ` Rich Felker
2020-11-19 16:52 ` Dave Martin via Libc-alpha
2020-11-19 16:37 ` Dave Martin via Libc-alpha
2020-11-19 17:29 ` Rich Felker
2020-11-19 17:33 ` Szabolcs Nagy via Libc-alpha
2020-11-19 19:39 ` Dave Martin via Libc-alpha
2020-11-20 14:08 ` H.J. Lu via Libc-alpha
2020-11-20 14:11 ` Florian Weimer
2020-11-20 23:13 ` V8 " H.J. Lu via Libc-alpha
2021-01-20 14:16 ` Carlos O'Donell via Libc-alpha
2021-01-20 15:05 ` V9 " H.J. Lu via Libc-alpha
2021-01-22 19:41 ` V10 " H.J. Lu via Libc-alpha
2021-01-25 13:31 ` Carlos O'Donell via Libc-alpha
2021-01-25 13:57 ` H.J. Lu via Libc-alpha
2021-01-25 13:59 ` Carlos O'Donell via Libc-alpha
2021-01-25 13:58 ` Carlos O'Donell via Libc-alpha
2021-01-25 14:16 ` Florian Weimer via Libc-alpha
2021-02-02 13:08 ` Carlos O'Donell via Libc-alpha
2021-01-25 14:34 ` Carlos O'Donell via Libc-alpha
2021-01-20 15:06 ` V8 " Florian Weimer via Libc-alpha
2021-01-20 15:30 ` Carlos O'Donell via Libc-alpha
2021-01-20 15:33 ` H.J. Lu via Libc-alpha
2021-01-20 15:59 ` Carlos O'Donell via Libc-alpha
2021-01-20 16:04 ` H.J. Lu via Libc-alpha
2021-01-20 15:33 ` Florian Weimer via Libc-alpha
2020-10-15 12:26 ` [PATCH] Deprecate SIGSTKSZ/MINSIGSTKSZ with _SC_SIGSTKSZ_SOURCE H.J. Lu via Libc-alpha
2020-10-15 19:59 ` Joseph Myers
2020-10-15 21:22 ` V2 " H.J. Lu via Libc-alpha
2020-10-16 0:57 ` Joseph Myers
2021-07-09 18:53 ` Carlos O'Donell via Libc-alpha
2021-07-09 19:34 ` H.J. Lu via Libc-alpha [this message]
2020-10-12 22:07 ` [PATCH] sysconf: Add _SC_MINSIGSTKSZ/_SC_SIGSTKSZ [BZ #20305] Joseph Myers
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