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mm, vmscan: add classzone information to tracepoints

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This is convenient when tracking down why the skip count is high because
it'll show what classzone kswapd woke up at and what zones are being
isolated.

Link: http://lkml.kernel.org/r/1467970510-21195-29-git-send-email-mgorman@techsingularity.net
Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Hillf Danton <hillf.zj@alibaba-inc.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Rik van Riel <riel@surriel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Mel Gorman
2016-07-28 15:46:47 -07:00
committed by Linus Torvalds
parent 84c7a7771f
commit e5146b12e2
2 changed files with 40 additions and 25 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
mm/vmscan.c
View File

@@ -1439,7 +1439,7 @@ static unsigned long isolate_lru_pages(unsigned long nr_to_scan,
if (!list_empty(&pages_skipped))
list_splice(&pages_skipped, src);
*nr_scanned = scan;
trace_mm_vmscan_lru_isolate(sc->order, nr_to_scan, scan,
trace_mm_vmscan_lru_isolate(sc->reclaim_idx, sc->order, nr_to_scan, scan,
nr_taken, mode, is_file_lru(lru));
for (scan = 0; scan < MAX_NR_ZONES; scan++) {
nr_pages = nr_zone_taken[scan];
@@ -2889,7 +2889,8 @@ unsigned long try_to_free_pages(struct zonelist *zonelist, int order,
trace_mm_vmscan_direct_reclaim_begin(order,
sc.may_writepage,
gfp_mask);
gfp_mask,
sc.reclaim_idx);
nr_reclaimed = do_try_to_free_pages(zonelist, &sc);
@@ -2920,7 +2921,8 @@ unsigned long mem_cgroup_shrink_node(struct mem_cgroup *memcg,
trace_mm_vmscan_memcg_softlimit_reclaim_begin(sc.order,
sc.may_writepage,
sc.gfp_mask);
sc.gfp_mask,
sc.reclaim_idx);
/*
* NOTE: Although we can get the priority field, using it
@@ -2968,7 +2970,8 @@ unsigned long try_to_free_mem_cgroup_pages(struct mem_cgroup *memcg,
trace_mm_vmscan_memcg_reclaim_begin(0,
sc.may_writepage,
sc.gfp_mask);
sc.gfp_mask,
sc.reclaim_idx);
nr_reclaimed = do_try_to_free_pages(zonelist, &sc);
@@ -3386,7 +3389,8 @@ kswapd_try_sleep:
* but kcompactd is woken to compact for the original
* request (alloc_order).
*/
trace_mm_vmscan_kswapd_wake(pgdat->node_id, alloc_order);
trace_mm_vmscan_kswapd_wake(pgdat->node_id, classzone_idx,
alloc_order);
reclaim_order = balance_pgdat(pgdat, alloc_order, classzone_idx);
if (reclaim_order < alloc_order)
goto kswapd_try_sleep;