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authorMel Gorman <mel@csn.ul.ie>2010-08-09 17:19:17 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-08-09 20:44:59 -0700
commita8a94d151521b248727c1f88756174e15260815a (patch)
tree81ea18e9c52f6260f9b52b16e592cc89bfd9d260 /include
parent33906bc5c87b50028364405ec425de9638afc719 (diff)
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vmscan: tracing: add trace events for LRU page isolation
Add an event for when pages are isolated en-masse from the LRU lists. This event augments the information available on LRU traffic and can be used to evaluate lumpy reclaim. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Mel Gorman <mel@csn.ul.ie> Acked-by: Rik van Riel <riel@redhat.com> Acked-by: Larry Woodman <lwoodman@redhat.com> Cc: Dave Chinner <david@fromorbit.com> Cc: Chris Mason <chris.mason@oracle.com> Cc: Nick Piggin <npiggin@suse.de> Cc: Rik van Riel <riel@redhat.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Christoph Hellwig <hch@infradead.org> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Michael Rubin <mrubin@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
-rw-r--r--include/trace/events/vmscan.h46
1 files changed, 46 insertions, 0 deletions
diff --git a/include/trace/events/vmscan.h b/include/trace/events/vmscan.h
index f76521ffe7d..c0552be1f50 100644
--- a/include/trace/events/vmscan.h
+++ b/include/trace/events/vmscan.h
@@ -109,6 +109,52 @@ TRACE_EVENT(mm_vmscan_direct_reclaim_end,
TP_printk("nr_reclaimed=%lu", __entry->nr_reclaimed)
);
+TRACE_EVENT(mm_vmscan_lru_isolate,
+
+ TP_PROTO(int order,
+ unsigned long nr_requested,
+ unsigned long nr_scanned,
+ unsigned long nr_taken,
+ unsigned long nr_lumpy_taken,
+ unsigned long nr_lumpy_dirty,
+ unsigned long nr_lumpy_failed,
+ int isolate_mode),
+
+ TP_ARGS(order, nr_requested, nr_scanned, nr_taken, nr_lumpy_taken, nr_lumpy_dirty, nr_lumpy_failed, isolate_mode),
+
+ TP_STRUCT__entry(
+ __field(int, order)
+ __field(unsigned long, nr_requested)
+ __field(unsigned long, nr_scanned)
+ __field(unsigned long, nr_taken)
+ __field(unsigned long, nr_lumpy_taken)
+ __field(unsigned long, nr_lumpy_dirty)
+ __field(unsigned long, nr_lumpy_failed)
+ __field(int, isolate_mode)
+ ),
+
+ TP_fast_assign(
+ __entry->order = order;
+ __entry->nr_requested = nr_requested;
+ __entry->nr_scanned = nr_scanned;
+ __entry->nr_taken = nr_taken;
+ __entry->nr_lumpy_taken = nr_lumpy_taken;
+ __entry->nr_lumpy_dirty = nr_lumpy_dirty;
+ __entry->nr_lumpy_failed = nr_lumpy_failed;
+ __entry->isolate_mode = isolate_mode;
+ ),
+
+ TP_printk("isolate_mode=%d order=%d nr_requested=%lu nr_scanned=%lu nr_taken=%lu contig_taken=%lu contig_dirty=%lu contig_failed=%lu",
+ __entry->isolate_mode,
+ __entry->order,
+ __entry->nr_requested,
+ __entry->nr_scanned,
+ __entry->nr_taken,
+ __entry->nr_lumpy_taken,
+ __entry->nr_lumpy_dirty,
+ __entry->nr_lumpy_failed)
+);
+
#endif /* _TRACE_VMSCAN_H */
/* This part must be outside protection */