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authorKOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>2010-08-10 00:19:56 (GMT)
committerLinus Torvalds <torvalds@linux-foundation.org>2010-08-10 03:45:03 (GMT)
commitbdce6d9ebf52c1f6c23163d1a33320ce7c007f73 (patch)
tree6070de94cdece474e277d8878721421671e212eb /mm/vmscan.c
parentcf4dcc3e9b374e1b61a7c22faf868707ce78d6a9 (diff)
memcg, vmscan: add memcg reclaim tracepoint
Memcg also need to trace reclaim progress as direct reclaim. This patch add it. Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Acked-by: Mel Gorman <mel@csn.ul.ie> Acked-by: Balbir Singh <balbir@linux.vnet.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/vmscan.c')
-rw-r--r--mm/vmscan.c20
1 files changed, 19 insertions, 1 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 9789a2c..154b37a 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -1951,6 +1951,11 @@ unsigned long mem_cgroup_shrink_node_zone(struct mem_cgroup *mem,
sc.nodemask = &nm;
sc.nr_reclaimed = 0;
sc.nr_scanned = 0;
+
+ trace_mm_vmscan_memcg_softlimit_reclaim_begin(0,
+ sc.may_writepage,
+ sc.gfp_mask);
+
/*
* NOTE: Although we can get the priority field, using it
* here is not a good idea, since it limits the pages we can scan.
@@ -1959,6 +1964,9 @@ unsigned long mem_cgroup_shrink_node_zone(struct mem_cgroup *mem,
* the priority and make it zero.
*/
shrink_zone(0, zone, &sc);
+
+ trace_mm_vmscan_memcg_softlimit_reclaim_end(sc.nr_reclaimed);
+
return sc.nr_reclaimed;
}
@@ -1968,6 +1976,7 @@ unsigned long try_to_free_mem_cgroup_pages(struct mem_cgroup *mem_cont,
unsigned int swappiness)
{
struct zonelist *zonelist;
+ unsigned long nr_reclaimed;
struct scan_control sc = {
.may_writepage = !laptop_mode,
.may_unmap = 1,
@@ -1982,7 +1991,16 @@ unsigned long try_to_free_mem_cgroup_pages(struct mem_cgroup *mem_cont,
sc.gfp_mask = (gfp_mask & GFP_RECLAIM_MASK) |
(GFP_HIGHUSER_MOVABLE & ~GFP_RECLAIM_MASK);
zonelist = NODE_DATA(numa_node_id())->node_zonelists;
- return do_try_to_free_pages(zonelist, &sc);
+
+ trace_mm_vmscan_memcg_reclaim_begin(0,
+ sc.may_writepage,
+ sc.gfp_mask);
+
+ nr_reclaimed = do_try_to_free_pages(zonelist, &sc);
+
+ trace_mm_vmscan_memcg_reclaim_end(nr_reclaimed);
+
+ return nr_reclaimed;
}
#endif

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