From: Suresh Siddha Date: Mon, 23 Aug 2010 20:42:51 +0000 (-0700) Subject: sched: Move sched_avg_update() to update_cpu_load() X-Git-Tag: v2.6.36-rc4~8^2~1 X-Git-Url: http://git.kernel.org/?p=linux%2Fkernel%2Fgit%2Ftorvalds%2Flinux-2.6.git;a=commitdiff_plain;h=da2b71edd8a7db44fe1746261410a981f3e03632 sched: Move sched_avg_update() to update_cpu_load() Currently sched_avg_update() (which updates rt_avg stats in the rq) is getting called from scale_rt_power() (in the load balance context) which doesn't take rq->lock. Fix it by moving the sched_avg_update() to more appropriate update_cpu_load() where the CFS load gets updated as well. Signed-off-by: Suresh Siddha Signed-off-by: Peter Zijlstra LKML-Reference: <1282596171.2694.3.camel@sbsiddha-MOBL3> Signed-off-by: Ingo Molnar --- diff --git a/kernel/sched.c b/kernel/sched.c index 09b574e..ed09d4f 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -1294,6 +1294,10 @@ static void resched_task(struct task_struct *p) static void sched_rt_avg_update(struct rq *rq, u64 rt_delta) { } + +static void sched_avg_update(struct rq *rq) +{ +} #endif /* CONFIG_SMP */ #if BITS_PER_LONG == 32 @@ -3182,6 +3186,8 @@ static void update_cpu_load(struct rq *this_rq) this_rq->cpu_load[i] = (old_load * (scale - 1) + new_load) >> i; } + + sched_avg_update(this_rq); } static void update_cpu_load_active(struct rq *this_rq) diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c index ab661eb..f53ec75 100644 --- a/kernel/sched_fair.c +++ b/kernel/sched_fair.c @@ -2268,8 +2268,6 @@ unsigned long scale_rt_power(int cpu) struct rq *rq = cpu_rq(cpu); u64 total, available; - sched_avg_update(rq); - total = sched_avg_period() + (rq->clock - rq->age_stamp); available = total - rq->rt_avg;