Re: [PATCH][GIT PULL] tracing: Fix compile issue for trace_sched_wakeup.c

Ingo Molnar
2010-10-20T18:40:56Z

* 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