Messages in this thread | | | Date | Mon, 3 Feb 2014 10:53:02 +0100 | From | Henrik Austad <> | Subject | Re: [PATCH] sched/core: fix sched_rt_global_validate |
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On Fri, Jan 31, 2014 at 05:43:27PM +0100, Juri Lelli wrote: > Don't compare sysctl_sched_rt_runtime against sysctl_sched_rt_period if > the former is equal to RUNTIME_INF, otherwise disabling -rt bandwidth > management always fails. > > Cc: Ingo Molnar <mingo@redhat.com> > Cc: Peter Zijlstra <peterz@infradead.org> > Signed-off-by: Juri Lelli <juri.lelli@gmail.com> > --- > kernel/sched/core.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/kernel/sched/core.c b/kernel/sched/core.c > index 210a12a..5c0a304 100644 > --- a/kernel/sched/core.c > +++ b/kernel/sched/core.c > @@ -7477,7 +7477,8 @@ static int sched_rt_global_validate(void) > if (sysctl_sched_rt_period <= 0) > return -EINVAL; > > - if (sysctl_sched_rt_runtime > sysctl_sched_rt_period) > + if ((sysctl_sched_rt_runtime != RUNTIME_INF) && > + (sysctl_sched_rt_runtime > sysctl_sched_rt_period)) > return -EINVAL;
Won't this be caught by the test above?
#define RUNTIME_INF ((u64)~0ULL)
which means that if sysctl_sched_rt_runtime is set to RUNTIME_INF, it will trigger on the previous test, and the first part of this test will always be true.
Or have I suffered catastrophic monday-morning braindamage?
-- Henrik Austad
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