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>
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@ -64,6 +64,7 @@ DEFINE_EVENT(mm_compaction_isolate_template, mm_compaction_isolate_freepages,
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TP_ARGS(start_pfn, end_pfn, nr_scanned, nr_taken)
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);
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#ifdef CONFIG_COMPACTION
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TRACE_EVENT(mm_compaction_migratepages,
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TP_PROTO(unsigned long nr_all,
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@ -132,7 +133,6 @@ TRACE_EVENT(mm_compaction_begin,
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__entry->sync ? "sync" : "async")
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);
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#ifdef CONFIG_COMPACTION
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TRACE_EVENT(mm_compaction_end,
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TP_PROTO(unsigned long zone_start, unsigned long migrate_pfn,
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unsigned long free_pfn, unsigned long zone_end, bool sync,
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@ -166,7 +166,6 @@ TRACE_EVENT(mm_compaction_end,
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__entry->sync ? "sync" : "async",
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__print_symbolic(__entry->status, COMPACTION_STATUS))
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);
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#endif
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TRACE_EVENT(mm_compaction_try_to_compact_pages,
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@ -195,7 +194,6 @@ TRACE_EVENT(mm_compaction_try_to_compact_pages,
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__entry->prio)
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);
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#ifdef CONFIG_COMPACTION
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DECLARE_EVENT_CLASS(mm_compaction_suitable_template,
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TP_PROTO(struct zone *zone,
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@ -296,7 +294,6 @@ DEFINE_EVENT(mm_compaction_defer_template, mm_compaction_defer_reset,
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TP_ARGS(zone, order)
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);
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#endif
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TRACE_EVENT(mm_compaction_kcompactd_sleep,
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@ -352,6 +349,7 @@ DEFINE_EVENT(kcompactd_wake_template, mm_compaction_kcompactd_wake,
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TP_ARGS(nid, order, classzone_idx)
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);
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#endif
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#endif /* _TRACE_COMPACTION_H */
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