]> git.proxmox.com Git - mirror_ubuntu-kernels.git/commit
mm/vmstat.c: erase latency in vmstat_shepherd
authorJiang Biao <benbjiang@tencent.com>
Fri, 26 Feb 2021 01:16:54 +0000 (17:16 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Fri, 26 Feb 2021 17:41:00 +0000 (09:41 -0800)
commitfbcc8183a4f815910697237386681153a05d9573
tree0608fed68d21c0f2206424db1fada188fd4a23f1
parent629484ae73754243917e06d8d5e5f37c26e99399
mm/vmstat.c: erase latency in vmstat_shepherd

Many 100us+ latencies have been deteceted in vmstat_shepherd() on CPX
platform which has 208 logic cpus.  And vmstat_shepherd is queued every
second, which could make the case worse.

Add schedule point in vmstat_shepherd() to erase the latency.

Link: https://lkml.kernel.org/r/20210111035526.1511-1-benbjiang@tencent.com
Signed-off-by: Jiang Biao <benbjiang@tencent.com>
Reported-by: Bin Lai <robinlai@tencent.com>
Cc: Christoph Lameter <cl@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
mm/vmstat.c