diff options
author | Vlastimil Babka <vbabka@suse.cz> | 2015-11-06 05:47:59 +0300 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-11-06 06:34:48 +0300 |
commit | 1743d0506003f7db0602d120ecf63e2747af0d72 (patch) | |
tree | f8d92b35df0d1504abc7d65aab3f9b7c36deb8a1 /include/trace | |
parent | fa6c7b46aaa0cc00846703e8c0ec1e1636ff25ba (diff) | |
download | linux-1743d0506003f7db0602d120ecf63e2747af0d72.tar.xz |
mm, compaction: export tracepoints zone names to userspace
Some compaction tracepoints use zone->name to print which zone is being
compacted. This works for in-kernel printing, but not userspace trace
printing of raw captured trace such as via trace-cmd report.
This patch uses zone_idx() instead of zone->name as the raw value, and
when printing, converts the zone_type to string using the appropriate EM()
macros and some ugly tricks to overcome the problem that half the values
depend on CONFIG_ options and one does not simply use #ifdef inside of
#define.
trace-cmd output before:
transhuge-stres-4235 [000] 453.149280: mm_compaction_finished: node=0
zone=ffffffff81815d7a order=9 ret=partial
after:
transhuge-stres-4235 [000] 453.149280: mm_compaction_finished: node=0
zone=Normal 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>
Cc: Valentin Rothberg <valentinrothberg@gmail.com>
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.h | 38 |
1 files changed, 32 insertions, 6 deletions
diff --git a/include/trace/events/compaction.h b/include/trace/events/compaction.h index 1275a555199a..a43000d76688 100644 --- a/include/trace/events/compaction.h +++ b/include/trace/events/compaction.h @@ -18,6 +18,31 @@ EM( COMPACT_NO_SUITABLE_PAGE, "no_suitable_page") \ EMe(COMPACT_NOT_SUITABLE_ZONE, "not_suitable_zone") +#ifdef CONFIG_ZONE_DMA +#define IFDEF_ZONE_DMA(X) X +#else +#define IFDEF_ZONE_DMA(X) +#endif + +#ifdef CONFIG_ZONE_DMA32 +#define IFDEF_ZONE_DMA32(X) X +#else +#define IFDEF_ZONE_DMA32(X) +#endif + +#ifdef CONFIG_HIGHMEM +#define IFDEF_ZONE_HIGHMEM(X) X +#else +#define IFDEF_ZONE_HIGHMEM(X) +#endif + +#define ZONE_TYPE \ + IFDEF_ZONE_DMA( EM (ZONE_DMA, "DMA")) \ + IFDEF_ZONE_DMA32( EM (ZONE_DMA32, "DMA32")) \ + EM (ZONE_NORMAL, "Normal") \ + IFDEF_ZONE_HIGHMEM( EM (ZONE_HIGHMEM,"HighMem")) \ + EMe(ZONE_MOVABLE,"Movable") + /* * First define the enums in the above macros to be exported to userspace * via TRACE_DEFINE_ENUM(). @@ -28,6 +53,7 @@ #define EMe(a, b) TRACE_DEFINE_ENUM(a); COMPACTION_STATUS +ZONE_TYPE /* * Now redefine the EM() and EMe() macros to map the enums to the strings @@ -230,21 +256,21 @@ DECLARE_EVENT_CLASS(mm_compaction_suitable_template, TP_STRUCT__entry( __field(int, nid) - __field(char *, name) + __field(enum zone_type, idx) __field(int, order) __field(int, ret) ), TP_fast_assign( __entry->nid = zone_to_nid(zone); - __entry->name = (char *)zone->name; + __entry->idx = zone_idx(zone); __entry->order = order; __entry->ret = ret; ), TP_printk("node=%d zone=%-8s order=%d ret=%s", __entry->nid, - __entry->name, + __print_symbolic(__entry->idx, ZONE_TYPE), __entry->order, __print_symbolic(__entry->ret, COMPACTION_STATUS)) ); @@ -276,7 +302,7 @@ DECLARE_EVENT_CLASS(mm_compaction_defer_template, TP_STRUCT__entry( __field(int, nid) - __field(char *, name) + __field(enum zone_type, idx) __field(int, order) __field(unsigned int, considered) __field(unsigned int, defer_shift) @@ -285,7 +311,7 @@ DECLARE_EVENT_CLASS(mm_compaction_defer_template, TP_fast_assign( __entry->nid = zone_to_nid(zone); - __entry->name = (char *)zone->name; + __entry->idx = zone_idx(zone); __entry->order = order; __entry->considered = zone->compact_considered; __entry->defer_shift = zone->compact_defer_shift; @@ -294,7 +320,7 @@ DECLARE_EVENT_CLASS(mm_compaction_defer_template, TP_printk("node=%d zone=%-8s order=%d order_failed=%d consider=%u limit=%lu", __entry->nid, - __entry->name, + __print_symbolic(__entry->idx, ZONE_TYPE), __entry->order, __entry->order_failed, __entry->considered, |