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| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2008-08-19 12:33:04 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-08-19 13:10:10 +0200 |
| commit | 0b148fa04852859972abbf848177b92daeef138a (patch) | |
| tree | 12d4b0daa8292fe406871b5aa034d7c9b2fae13d /kernel/sched.c | |
| parent | 6f0d5c390e4206dcb3804a5072a048fdb7d2b428 (diff) | |
| download | lwn-0b148fa04852859972abbf848177b92daeef138a.tar.gz lwn-0b148fa04852859972abbf848177b92daeef138a.zip | |
sched: rt-bandwidth group disable fixes
More extensive disable of bandwidth control. It allows sysctl_sched_rt_runtime
to disable full group bandwidth control.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/sched.c')
| -rw-r--r-- | kernel/sched.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/kernel/sched.c b/kernel/sched.c index 9a1ddb84e26d..c1bee5fb8154 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -204,11 +204,13 @@ void init_rt_bandwidth(struct rt_bandwidth *rt_b, u64 period, u64 runtime) rt_b->rt_period_timer.cb_mode = HRTIMER_CB_IRQSAFE_NO_SOFTIRQ; } +static inline int rt_bandwidth_enabled(void); + static void start_rt_bandwidth(struct rt_bandwidth *rt_b) { ktime_t now; - if (rt_b->rt_runtime == RUNTIME_INF) + if (rt_bandwidth_enabled() && rt_b->rt_runtime == RUNTIME_INF) return; if (hrtimer_active(&rt_b->rt_period_timer)) @@ -839,6 +841,11 @@ static inline u64 global_rt_runtime(void) return (u64)sysctl_sched_rt_runtime * NSEC_PER_USEC; } +static inline int rt_bandwidth_enabled(void) +{ + return sysctl_sched_rt_runtime >= 0; +} + #ifndef prepare_arch_switch # define prepare_arch_switch(next) do { } while (0) #endif |