Commit 468fd62e authored Apr 28, 2008 by Dimitri Sivanich Committed by Linus Torvalds Apr 28, 2008

vmstats: add cond_resched() to refresh_cpu_vm_stats()



We've found that it can take quite a bit of time (100's of usec) to get
through the zone loop in refresh_cpu_vm_stats().

Adding a cond_resched() to allow other threads to run in the non-preemptive
case.

Signed-off-by: Dimitri Sivanich <sivanich@sgi.com>
Acked-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent 8cece85e

mm/vmstat.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -322,6 +322,7 @@ void refresh_cpu_vm_stats(int cpu)
		p->expire = 3;
		#endif
		}
		cond_resched();
		#ifdef CONFIG_NUMA
		/*
		* Deal with draining the remote pageset of this