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authorVlastimil Babka <vbabka@suse.cz>2015-11-05 18:47:56 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2015-11-05 19:34:48 -0800
commitfa6c7b46aaa0cc00846703e8c0ec1e1636ff25ba (patch)
treef138e6d6d1c8b3a9957f73ef437416cd383cfcd7 /include/linux/compaction.h
parent840807a8f40bb25a8df5b6412bba6bc156643be5 (diff)
mm, compaction: export tracepoints status strings to userspace
Some compaction tracepoints convert the integer return values to strings using the compaction_status_string array. This works for in-kernel printing, but not userspace trace printing of raw captured trace such as via trace-cmd report. This patch converts the private array to appropriate tracepoint macros that result in proper userspace support. trace-cmd output before: transhuge-stres-4235 [000] 453.149280: mm_compaction_finished: node=0 zone=ffffffff81815d7a order=9 ret= after: transhuge-stres-4235 [000] 453.149280: mm_compaction_finished: node=0 zone=ffffffff81815d7a order=9 ret=partial Signed-off-by: Vlastimil Babka <vbabka@suse.cz> Reviewed-by: Steven Rostedt <rostedt@goodmis.org> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Mel Gorman <mgorman@suse.de> Cc: David Rientjes <rientjes@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/compaction.h')
-rw-r--r--include/linux/compaction.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/compaction.h b/include/linux/compaction.h
index aa8f61cf3a19..f14ba989092f 100644
--- a/include/linux/compaction.h
+++ b/include/linux/compaction.h
@@ -15,7 +15,7 @@
/* For more detailed tracepoint output */
#define COMPACT_NO_SUITABLE_PAGE 5
#define COMPACT_NOT_SUITABLE_ZONE 6
-/* When adding new state, please change compaction_status_string, too */
+/* When adding new states, please adjust include/trace/events/compaction.h */
/* Used to signal whether compaction detected need_sched() or lock contention */
/* No contention detected */