mm, compaction: some tracepoints should be defined only when CONFIG_COMPACTION is set
authorYafang Shao <laoar.shao@gmail.com>
Tue, 14 May 2019 00:17:47 +0000 (17:17 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Tue, 14 May 2019 16:47:46 +0000 (09:47 -0700)
commitb6cfab7ad19d4920d5765e53042cfa62f2fced3d
treeb7b6b201fba987c510ba8017058d4e722c53ebfb
parentb1746b991d621e35151386224f455fd6c0d291f0
mm, compaction: some tracepoints should be defined only when CONFIG_COMPACTION is set

Only mm_compaction_isolate_{free, migrate}pages may be used when
CONFIG_COMPACTION is not set.  All others are used only when
CONFIG_COMPACTION is set.

After this change, if CONFIG_COMPACTION is not set, the tracepoints that
only work when CONFIG_COMPACTION is set will not be exposed to userspace.
Without this change, they will always be exposed in debugfs whether
CONFIG_COMPACTION is set or not.  This is an improvement.

Link: http://lkml.kernel.org/r/1552440403-11780-1-git-send-email-laoar.shao@gmail.com
Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Mel Gorman <mgorman@techsingularity.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
include/trace/events/compaction.h