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Date: Sat, 26 Jan 2013 01:45:23 +0100 From: Frederic Weisbecker <fweisbec@...il.com> To: liguang <lig.fnst@...fujitsu.com> Cc: mingo@...hat.com, peterz@...radead.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH]cputime: make bool type for steal ticks 2012/11/16 liguang <lig.fnst@...fujitsu.com>: > Signed-off-by: liguang <lig.fnst@...fujitsu.com> > --- > kernel/sched/cputime.c | 2 +- > 1 files changed, 1 insertions(+), 1 deletions(-) > > diff --git a/kernel/sched/cputime.c b/kernel/sched/cputime.c > index 81b763b..d2c24c1 100644 > --- a/kernel/sched/cputime.c > +++ b/kernel/sched/cputime.c > @@ -282,7 +282,7 @@ static __always_inline bool steal_account_process_tick(void) > this_rq()->prev_steal_time += st * TICK_NSEC; > > account_steal_time(st); > - return st; > + return !!st; I would expect gcc to perform the semantic "!!" cast implicitly. I just did some basic tests locally and it does. I prefer to be paranoid and not do any assumption though, unless I'm told gcc always guarantees this correct implicit cast. I'm queuing this patch and will send it to Ingo. Thanks! > } > #endif > return false; > -- > 1.7.1 > > -- > 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/ -- 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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