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[v8,01/13] mm: vmscan: use nid from shrink_control for tracepoint

Message ID 20210217001322.2226796-2-shy828301@gmail.com (mailing list archive)
State New
Headers show
Series Make shrinker's nr_deferred memcg aware | expand

Commit Message

Yang Shi Feb. 17, 2021, 12:13 a.m. UTC
The tracepoint's nid should show what node the shrink happens on, the start tracepoint
uses nid from shrinkctl, but the nid might be set to 0 before end tracepoint if the
shrinker is not NUMA aware, so the tracing log may show the shrink happens on one
node but end up on the other node.  It seems confusing.  And the following patch
will remove using nid directly in do_shrink_slab(), this patch also helps cleanup
the code.

Acked-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Reviewed-by: Shakeel Butt <shakeelb@google.com>
Acked-by: Roman Gushchin <guro@fb.com>
Signed-off-by: Yang Shi <shy828301@gmail.com>
 mm/vmscan.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/mm/vmscan.c b/mm/vmscan.c
index b1b574ad199d..b512dd5e3a1c 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -535,7 +535,7 @@  static unsigned long do_shrink_slab(struct shrink_control *shrinkctl,
 		new_nr = atomic_long_read(&shrinker->nr_deferred[nid]);
-	trace_mm_shrink_slab_end(shrinker, nid, freed, nr, new_nr, total_scan);
+	trace_mm_shrink_slab_end(shrinker, shrinkctl->nid, freed, nr, new_nr, total_scan);
 	return freed;