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| author | Dimitri Sivanich <sivanich@sgi.com> | 2008-04-28 02:13:37 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-28 08:58:26 -0700 |
| commit | 468fd62ed9090ccbe872489df5d0d099510df4b5 (patch) | |
| tree | 017ab340cac72bf86423f181f085e7bc39fd70ea /mm/vmstat.c | |
| parent | 8cece85ec744bdc7ea0fc2d33f65b3f031c28468 (diff) | |
| download | lwn-468fd62ed9090ccbe872489df5d0d099510df4b5.tar.gz lwn-468fd62ed9090ccbe872489df5d0d099510df4b5.zip | |
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>
Diffstat (limited to 'mm/vmstat.c')
| -rw-r--r-- | mm/vmstat.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/mm/vmstat.c b/mm/vmstat.c index 4c21670f8d91..ec6035eda933 100644 --- a/mm/vmstat.c +++ b/mm/vmstat.c @@ -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 |