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memcg, vmscan: add memcg reclaim tracepoint

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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>
This commit is contained in:
KOSAKI Motohiro 2010-08-09 17:19:56 -07:00 committed by Linus Torvalds
parent cf4dcc3e9b
commit bdce6d9ebf
2 changed files with 47 additions and 1 deletions
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28
include/trace/events/vmscan.h
View file

@ -117,6 +117,19 @@ DEFINE_EVENT(mm_vmscan_direct_reclaim_begin_template, mm_vmscan_direct_reclaim_b
TP_ARGS(order, may_writepage, gfp_flags)
);
DEFINE_EVENT(mm_vmscan_direct_reclaim_begin_template, mm_vmscan_memcg_reclaim_begin,
TP_PROTO(int order, int may_writepage, gfp_t gfp_flags),
TP_ARGS(order, may_writepage, gfp_flags)
);
DEFINE_EVENT(mm_vmscan_direct_reclaim_begin_template, mm_vmscan_memcg_softlimit_reclaim_begin,
TP_PROTO(int order, int may_writepage, gfp_t gfp_flags),
TP_ARGS(order, may_writepage, gfp_flags)
);
DECLARE_EVENT_CLASS(mm_vmscan_direct_reclaim_end_template,
@ -142,6 +155,21 @@ DEFINE_EVENT(mm_vmscan_direct_reclaim_end_template, mm_vmscan_direct_reclaim_end
TP_ARGS(nr_reclaimed)
);
DEFINE_EVENT(mm_vmscan_direct_reclaim_end_template, mm_vmscan_memcg_reclaim_end,
TP_PROTO(unsigned long nr_reclaimed),
TP_ARGS(nr_reclaimed)
);
DEFINE_EVENT(mm_vmscan_direct_reclaim_end_template, mm_vmscan_memcg_softlimit_reclaim_end,
TP_PROTO(unsigned long nr_reclaimed),
TP_ARGS(nr_reclaimed)
);
TRACE_EVENT(mm_vmscan_lru_isolate,
TP_PROTO(int order,

20
mm/vmscan.c
View file

@ -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