From b6cfab7ad19d4920d5765e53042cfa62f2fced3d Mon Sep 17 00:00:00 2001 From: Yafang Shao Date: Mon, 13 May 2019 17:17:47 -0700 Subject: [PATCH] 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 Reviewed-by: Andrew Morton Cc: Michal Hocko Cc: Mel Gorman Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/trace/events/compaction.h | 6 ++---- 1 file 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 */ -- 2.30.2