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authorYafang Shao <laoar.shao@gmail.com>2019-05-14 03:17:47 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2019-05-14 19:47:46 +0300
commitb6cfab7ad19d4920d5765e53042cfa62f2fced3d (patch)
treeb7b6b201fba987c510ba8017058d4e722c53ebfb /include/trace
parentb1746b991d621e35151386224f455fd6c0d291f0 (diff)
downloadlinux-b6cfab7ad19d4920d5765e53042cfa62f2fced3d.tar.xz
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>
Diffstat (limited to 'include/trace')
-rw-r--r--include/trace/events/compaction.h6
1 files changed, 2 insertions, 4 deletions
diff --git a/include/trace/events/compaction.h b/include/trace/events/compaction.h
index e66afb81815a..e5bf6ee4e814 100644
--- a/include/trace/events/compaction.h
+++ b/include/trace/events/compaction.h
@@ -64,6 +64,7 @@ DEFINE_EVENT(mm_compaction_isolate_template, mm_compaction_isolate_freepages,
TP_ARGS(start_pfn, end_pfn, nr_scanned, nr_taken)
);
+#ifdef CONFIG_COMPACTION
TRACE_EVENT(mm_compaction_migratepages,
TP_PROTO(unsigned long nr_all,
@@ -132,7 +133,6 @@ TRACE_EVENT(mm_compaction_begin,
__entry->sync ? "sync" : "async")
);
-#ifdef CONFIG_COMPACTION
TRACE_EVENT(mm_compaction_end,
TP_PROTO(unsigned long zone_start, unsigned long migrate_pfn,
unsigned long free_pfn, unsigned long zone_end, bool sync,
@@ -166,7 +166,6 @@ TRACE_EVENT(mm_compaction_end,
__entry->sync ? "sync" : "async",
__print_symbolic(__entry->status, COMPACTION_STATUS))
);
-#endif
TRACE_EVENT(mm_compaction_try_to_compact_pages,
@@ -195,7 +194,6 @@ TRACE_EVENT(mm_compaction_try_to_compact_pages,
__entry->prio)
);
-#ifdef CONFIG_COMPACTION
DECLARE_EVENT_CLASS(mm_compaction_suitable_template,
TP_PROTO(struct zone *zone,
@@ -296,7 +294,6 @@ DEFINE_EVENT(mm_compaction_defer_template, mm_compaction_defer_reset,
TP_ARGS(zone, order)
);
-#endif
TRACE_EVENT(mm_compaction_kcompactd_sleep,
@@ -352,6 +349,7 @@ DEFINE_EVENT(kcompactd_wake_template, mm_compaction_kcompactd_wake,
TP_ARGS(nid, order, classzone_idx)
);
+#endif
#endif /* _TRACE_COMPACTION_H */