Re: [PATCH] ftrace, sched: Add TRACE_FLAG_PREEMPT_RESCHED

From: Peter Zijlstra
Date: Fri Oct 04 2013 - 12:28:51 EST


On Fri, Oct 04, 2013 at 11:57:12AM -0400, Steven Rostedt wrote:
> > + need-resched:
> > + 'N' both TIF_NEED_RESCHED and PREEMPT_NEED_RESCHED is set,
> > + 'n' only TIF_NEED_RESCHED is set,
> > + 'p' only PREEMPT_NEED_RESCHED is set,
> > + '.' otherwise.
>
> Yes this is actually good enough. I'll have to spend time to explain
> this better. But I'll let you off the hook from doing it for me ;-)

beware; such endevours might lead to books and those are typically out
of date by the time they hit the street -- ie. they're a fair waste of
time ;-)
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