From: Andrew Haley <aph@redhat.com>
To: rostedt@goodmis.org
Cc: Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@elte.hu>,
"H. Peter Anvin" <hpa@zytor.com>,
LKML <linux-kernel@vger.kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Heiko Carstens <heiko.carstens@de.ibm.com>,
feng.tang@intel.com, Peter Zijlstra <peterz@infradead.org>,
Frederic Weisbecker <fweisbec@gmail.com>,
David Daney <ddaney@caviumnetworks.com>,
Richard Guenther <richard.guenther@gmail.com>,
jakub@redhat.com, gcc <gcc@gcc.gnu.org>,
Linus Torvalds <torvalds@linux-foundation.org>
Subject: Re: [PATCH][GIT PULL][v2.6.32] tracing/x86: Add check to detect GCC messing with mcount prologue
Date: Fri, 20 Nov 2009 19:35:11 +0000 [thread overview]
Message-ID: <4B06EF6F.2050507@redhat.com> (raw)
In-Reply-To: <1258736456.22249.1032.camel@gandalf.stny.rr.com>
Steven Rostedt wrote:
> Ingo, Thomas and Linus,
>
> I know Thomas did a patch to force the -mtune=generic, but just in case
> gcc decides to do something crazy again, this patch will catch it.
>
> Should we try to get this in now?
I'm sure this makes sense, but a gcc test case would be even better.
If this can be detected in the gcc test suite it'll be found and
fixed long before y'all in kernel land get to see it. That's the
only way to guarantee this never bothers you again.
H.J., who wrote the code in question, is hopefully looking at why
this odd code is being generated. Once he's done I can put a
suitable test case in the gcc test suite.
Andrew.
next prev parent reply other threads:[~2009-11-20 19:36 UTC|newest]
Thread overview: 93+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <200911172214.nAHMEBh2023787@imap1.linux-foundation.org>
2009-11-18 19:30 ` [patch for 2.6.32? 1/3] hrtimers: remove the "timer_stats_active" check when setting the start info Thomas Gleixner
2009-11-18 20:24 ` [tip:timers/urgent] hrtimer: Fix /proc/timer_list regression tip-bot for Feng Tang
2009-11-19 7:20 ` Ingo Molnar
2009-11-19 10:05 ` Thomas Gleixner
2009-11-19 14:30 ` BUG: function graph tracer function frame assumptions Thomas Gleixner
2009-11-19 15:37 ` BUG: GCC-4.4.x changes the function frame on some functions Thomas Gleixner
2009-11-19 15:44 ` Andrew Haley
2009-11-19 15:54 ` H. Peter Anvin
2009-11-19 15:57 ` Richard Guenther
2009-11-19 16:02 ` Steven Rostedt
2009-11-19 16:11 ` H. Peter Anvin
2009-11-19 16:19 ` Frederic Weisbecker
2009-11-19 16:06 ` Thomas Gleixner
2009-11-19 16:17 ` Andrew Haley
2009-11-19 16:43 ` Thomas Gleixner
2009-11-19 16:12 ` Steven Rostedt
2009-11-19 15:45 ` H. Peter Anvin
2009-11-19 15:49 ` Richard Guenther
2009-11-19 15:52 ` Richard Guenther
2009-11-19 17:37 ` Andi Kleen
2009-11-19 17:39 ` Linus Torvalds
2009-11-19 17:51 ` Thomas Gleixner
2009-11-19 17:59 ` Steven Rostedt
2009-11-19 18:03 ` Richard Guenther
2009-11-19 18:22 ` Andrew Haley
2009-11-19 18:41 ` Linus Torvalds
2009-11-19 18:43 ` Linus Torvalds
2009-11-19 18:54 ` Linus Torvalds
2009-11-19 19:01 ` Thomas Gleixner
2009-11-23 9:16 ` Jakub Jelinek
2009-11-23 9:51 ` Thomas Gleixner
2009-11-19 19:10 ` David Daney
2009-11-19 19:28 ` Steven Rostedt
2009-11-19 19:46 ` Frederic Weisbecker
2009-11-19 19:54 ` Kai Tietz
2009-11-19 20:05 ` Frederic Weisbecker
2009-11-19 20:05 ` Steven Rostedt
2009-11-19 20:17 ` Steven Rostedt
2009-11-19 20:28 ` Frederic Weisbecker
2009-11-19 20:25 ` Frederic Weisbecker
2009-11-19 20:36 ` Linus Torvalds
2009-11-19 20:44 ` Steven Rostedt
2009-11-19 19:50 ` H. Peter Anvin
2009-11-19 20:06 ` Linus Torvalds
2009-11-19 21:12 ` Jeff Law
2009-11-19 20:10 ` Steven Rostedt
2009-11-19 21:05 ` Jeff Law
2009-11-19 18:31 ` Thomas Gleixner
2009-11-19 18:38 ` Linus Torvalds
2009-11-19 18:47 ` Ingo Molnar
2009-11-19 19:06 ` Steven Rostedt
2009-11-19 19:50 ` Ingo Molnar
2009-11-20 9:57 ` [PATCH] gcc mcount-nofp was " Andi Kleen
2009-11-20 12:34 ` Steven Rostedt
2009-11-20 19:06 ` H. Peter Anvin
2009-11-19 20:36 ` Thomas Gleixner
2009-11-19 18:20 ` Andrew Haley
2009-11-19 18:33 ` Steven Rostedt
2009-11-19 18:36 ` Andrew Pinski
2009-11-19 18:36 ` Andrew Haley
2009-11-19 18:37 ` H. Peter Anvin
2009-11-19 18:39 ` Thomas Gleixner
2009-11-20 5:23 ` [PATCH][GIT PULL][v2.6.32] tracing/x86: Add check to detect GCC messing with mcount prologue Steven Rostedt
2009-11-20 5:32 ` Steven Rostedt
2009-11-20 17:00 ` Steven Rostedt
2009-11-20 17:13 ` H. Peter Anvin
2009-11-20 19:35 ` Andrew Haley [this message]
2009-11-20 19:46 ` Steven Rostedt
2009-11-20 19:49 ` H. Peter Anvin
2009-11-22 9:38 ` H.J. Lu
2009-11-22 17:20 ` Andrew Haley
2009-11-22 23:30 ` H.J. Lu
2009-11-24 14:43 ` Andrew Haley
2009-11-24 14:55 ` Thomas Gleixner
2009-11-24 15:06 ` Jakub Jelinek
2009-11-24 15:32 ` Andrew Haley
2009-11-24 15:36 ` Jakub Jelinek
2009-11-24 15:46 ` Andrew Haley
2009-11-24 16:38 ` H. Peter Anvin
2009-11-24 17:12 ` Andrew Haley
2009-11-24 17:30 ` Steven Rostedt
2009-11-25 20:05 ` H. Peter Anvin
2009-11-24 19:55 ` H. Peter Anvin
2009-11-25 15:29 ` Thomas Gleixner
2009-11-25 15:44 ` Ingo Molnar
2009-11-25 15:53 ` Thomas Gleixner
2009-11-25 16:25 ` Ingo Molnar
2009-11-25 16:44 ` Jakub Jelinek
2009-11-25 20:12 ` H. Peter Anvin
2009-11-25 21:00 ` Andrew Haley
2009-11-22 9:05 ` Ingo Molnar
2009-11-20 10:30 ` [tip:timers/urgent] hrtimer: Fix /proc/timer_list regression tip-bot for Feng Tang
2009-11-20 14:19 ` Heiko Carstens
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