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Date: Wed, 11 Nov 2009 13:11:51 +0100 From: Stanislaw Gruszka <sgruszka@...hat.com> To: Hidetoshi Seto <seto.hidetoshi@...fujitsu.com> Cc: Peter Zijlstra <peterz@...radead.org>, Spencer Candland <spencer@...ehost.com>, linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...e.hu>, Oleg Nesterov <oleg@...hat.com> Subject: Re: [PATCH] fix granularity of task_u/stime() Hi Hidetoshi On Tue, Nov 10, 2009 at 02:47:34PM +0900, Hidetoshi Seto wrote: > Remove casting to clock_t from task_u/stime(), and keep granularity of > cputime_t over the calculation. > > Signed-off-by: Hidetoshi Seto <seto.hidetoshi@...fujitsu.com> > --- > kernel/sched.c | 21 ++++++++++++--------- > 1 files changed, 12 insertions(+), 9 deletions(-) > > diff --git a/kernel/sched.c b/kernel/sched.c > index 28dd4f4..1632e82 100644 > --- a/kernel/sched.c > +++ b/kernel/sched.c > @@ -5171,41 +5171,44 @@ cputime_t task_stime(struct task_struct *p) > return p->stime; > } > #else > + > +#ifndef nsecs_to_cputime > +# define nsecs_to_cputime(__nsecs) msecs_to_cputime((__nsecs) / NSEC_PER_MSEC) > +#endif > + I would like to test, but unfortunately with the patch kernel not build on my system: kernel/built-in.o: In function `task_utime': /usr/src/rhel5/linux-2.6/kernel/sched.c:5187: undefined reference to `__udivdi3' kernel/built-in.o: In function `task_stime': /usr/src/rhel5/linux-2.6/kernel/sched.c:5208: undefined reference to `__udivdi3' make: *** [.tmp_vmlinux1] Error 1 Cheers Stanislaw -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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