From: Ingo Molnar <mingo@elte.hu>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: Jason Baron <jbaron@redhat.com>,
LKML <linux-kernel@vger.kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Frederic Weisbecker <fweisbec@gmail.com>,
Thomas Gleixner <tglx@linutronix.de>,
"H. Peter Anvin" <hpa@zytor.com>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Arnaldo Carvalho de Melo <acme@redhat.com>
Subject: Re: [PATCH][GIT PULL] tracing: Fix compile issue for trace_sched_wakeup.c
Date: Wed, 20 Oct 2010 20:40:32 +0200 [thread overview]
Message-ID: <20101020184032.GB12666@elte.hu> (raw)
In-Reply-To: <1287592675.16971.559.camel@gandalf.stny.rr.com>
* Steven Rostedt <rostedt@goodmis.org> wrote:
> jump_label_update uses stop_machine to enable each tracepoint. Thus this is
> stressing stop machine.
>
> Does this only happen on i386, or do we get this on x86_64 too?
I've only seen it on 32-bit - and this testbox is booting both random 64-bit and
32-bit kernels, so the test proportion is 50%.
The failures started at around the time Thomas did the big irq/core changes a couple
of days ago. I first blamed it on him. I.e. it's around:
12ef49d: Merge branch 'irq/core'
That's right after jump labels and some other tracing changes went in. The compiler
i'm using is:
gcc version 4.4.4 20100514 (Red Hat 4.4.4-3) (GCC)
which doesnt support jump labels.
Ingo
next prev parent reply other threads:[~2010-10-20 18:40 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-19 17:11 [PATCH][GIT PULL] tracing: Fix compile issue for trace_sched_wakeup.c Steven Rostedt
2010-10-19 18:41 ` Ingo Molnar
2010-10-20 15:40 ` Ingo Molnar
2010-10-20 16:37 ` Steven Rostedt
2010-10-20 18:40 ` Ingo Molnar [this message]
2010-10-20 16:43 ` Jason Baron
2010-10-20 18:33 ` Ingo Molnar
2010-10-21 11:09 ` Ingo Molnar
2010-10-22 17:58 ` Jason Baron
2010-10-22 18:24 ` Ingo Molnar
2010-10-22 18:39 ` Jason Baron
2010-10-23 20:02 ` Ingo Molnar
2010-10-24 0:53 ` Steven Rostedt
2010-10-24 11:25 ` Ingo Molnar
2010-10-25 8:59 ` Ingo Molnar
2010-10-25 9:30 ` Ingo Molnar
2010-10-25 11:45 ` Ingo Molnar
2010-10-25 12:10 ` Ingo Molnar
2010-10-25 12:18 ` Peter Zijlstra
2010-10-25 12:32 ` Ingo Molnar
2010-10-25 15:47 ` Peter Zijlstra
2010-10-25 16:07 ` Peter Zijlstra
2010-10-25 17:25 ` Ingo Molnar
2010-10-25 17:32 ` Ingo Molnar
2010-10-25 17:45 ` Peter Zijlstra
2010-10-25 17:52 ` Jason Baron
2010-10-30 10:42 ` [tip:perf/urgent] jump label: Add work around to i386 gcc asm goto bug tip-bot for Steven Rostedt
2010-10-25 15:55 ` [PATCH][GIT PULL] tracing: Fix compile issue for trace_sched_wakeup.c Jason Baron
2010-10-25 16:09 ` Peter Zijlstra
2010-10-22 21:42 ` Jason Baron
2010-10-23 4:41 ` Steven Rostedt
2010-10-21 2:58 ` Masami Hiramatsu
2010-10-21 7:22 ` Peter Zijlstra
2010-10-21 11:01 ` Steven Rostedt
2010-10-21 11:03 ` Peter Zijlstra
2010-10-21 12:45 ` Steven Rostedt
2010-10-21 13:50 ` Jason Baron
2010-10-22 4:56 ` Masami Hiramatsu
2010-10-21 14:00 ` Jason Baron
2010-10-21 11:14 ` Steven Rostedt
2010-10-21 11:26 ` Ingo Molnar
2010-10-21 13:55 ` Jason Baron
2010-10-21 14:43 ` Ingo Molnar
2010-10-22 1:44 ` Jason Baron
2010-10-22 8:14 ` Peter Zijlstra
2010-10-22 14:13 ` Jason Baron
2010-10-22 14:23 ` Peter Zijlstra
2010-10-22 14:36 ` Steven Rostedt
2010-10-22 14:36 ` Jason Baron
2010-10-22 8:16 ` Tejun Heo
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