sched: fix stale value in average load per task

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Impact: fix load balancer load average calculation accuracy

cpu_avg_load_per_task() returns a stale value when nr_running is 0.
It returns an older stale (caculated when nr_running was non zero) value.

This patch returns and sets rq->avg_load_per_task to zero when nr_running
is 0.

Compile and boot tested on a x86_64 box.

Signed-off-by: Balbir Singh <balbir@linux.vnet.ibm.com>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

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Balbir Singh 2008-11-12 16:19:00 +05:30 • committed by Ingo Molnar

parent f21f237cf5

commit a2d477778e

1 changed files with 2 additions and 0 deletions

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kernel/sched.c

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