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authorYafang Shao <laoar.shao@gmail.com>2019-05-13 17:17:53 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2019-05-14 09:47:46 -0700
commit132bb8cfc9e081238e7e2fd0c37c8c75ad0d2963 (patch)
treeb09c82741dd92664b8816acf73978dbe67c9f6d3 /tools/usb/ffs-aio-example
parent5e65af19e89ac33dc83e1869c78b33ed7099469b (diff)
downloadlinux-132bb8cfc9e081238e7e2fd0c37c8c75ad0d2963.tar.bz2
mm/vmscan: add tracepoints for node reclaim
The page alloc fast path it may perform node reclaim, which may cause a latency spike. We should add tracepoint for this event, and also measure the latency it causes. So bellow two tracepoints are introduced, mm_vmscan_node_reclaim_begin mm_vmscan_node_reclaim_end Link: http://lkml.kernel.org/r/1551421452-5385-1-git-send-email-laoar.shao@gmail.com Signed-off-by: Yafang Shao <laoar.shao@gmail.com> Acked-by: Michal Hocko <mhocko@suse.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Souptick Joarder <jrdr.linux@gmail.com> Cc: <shaoyafang@didiglobal.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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