Messages in this thread | | | Date | Thu, 23 Aug 2007 13:30:36 +0200 | From | Ingo Molnar <> | Subject | Re: sched.c: why -fno-omit-frame-pointer? |
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* Andi Kleen <andi@firstfloor.org> wrote:
> Adrian Bunk <bunk@kernel.org> writes: > > > > Is the -fno-omit-frame-pointer still required for some reason, or is > > this a relict that could be removed? > > It's needed so that the WCHAN /proc display can backtrace one level up > out of schedule()
it's not just one level - we'll back out until we are in scheduler functions (up to 16 levels). So it will back out of io_schedule() and other functions as well.
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