Re: [PATCH 4/5] sched: Refactor iowait accounting

From: Frederic Weisbecker
Date: Sat Oct 19 2013 - 12:20:41 EST


On Sat, Oct 19, 2013 at 06:05:17PM +0200, Peter Zijlstra wrote:
> On Sat, Oct 19, 2013 at 06:02:37PM +0200, Frederic Weisbecker wrote:
> > > I just had a look at delayacct; wth wrote that crap; that too uses
> > > gtod.
> >
> > I can't find where it does that. kernel/delayacct.c doesn't seem to at least.
>
> Look for do_posix_clock_monotonic_gettime() ;-)

Oh. Well that's a good news, it appears to be a nice low hanging fruit :)

Also perhaps we could make it use the same timestamp as cpu_iowait_start/end.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/