Re: [PATCH] ftrace,arm: add notrace to ARM sched_clock routines - resend

From: Paul Mundt
Date: Sun Jun 14 2009 - 17:31:52 EST


On Sun, Jun 14, 2009 at 07:51:04PM +0200, Linus Walleij wrote:
> 2009/6/13 Tim Bird <tim.bird@xxxxxxxxxxx>:
>
> > Add notrace attribute to sched_clock, to avoid
> > recursion with ftrace function tracing.
> >
> > Signed-off-by: Tim Bird <tim.bird@xxxxxxxxxxx>
> > ---
> > arch/arm/mach-mmp/time.c | 2 +-
> > arch/arm/mach-pxa/time.c | 2 +-
> > arch/arm/mach-realview/core.c | 2 +-
> > arch/arm/mach-sa1100/generic.c | 2 +-
> > arch/arm/mach-versatile/core.c | 2 +-
> > arch/arm/plat-omap/common.c | 4 ++--
> > 6 files changed, 7 insertions(+), 7 deletions(-)
>
> And now that Paul Mundt is making it possible to use the default
> sched_clock() with the generic clocksource and the OMAP hack
> will likely go away, should the default implementation in
> kernel/sched_clock.c also be tagged as
> unsigned long long notrace __attribute__((weak)) sched_clock(void)
> or something?
>
> Should it be tagged notrace even if it's the old jiffybased one even?
>
Thanks for pointing that out. Yes, the new generic version will need the
notrace attribute as well, I will include this in the next iteration.
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