From df9024a8c5a3e031c5df26386f74ffed1b8fc095 Mon Sep 17 00:00:00 2001 From: Dave Hansen Date: Wed, 4 Jun 2014 16:08:07 -0700 Subject: [PATCH] mm: shrinker: add nid to tracepoint output Now that we are doing NUMA-aware shrinking, and can have shrinkers running in parallel, or working on individual nodes, it seems like we should also be sticking the node in the output. Signed-off-by: Dave Hansen Acked-by: Dave Chinner Cc: Konstantin Khlebnikov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/trace/events/vmscan.h | 15 +++++++++++---- mm/vmscan.c | 2 +- 2 files changed, 12 insertions(+), 5 deletions(-) diff --git a/include/trace/events/vmscan.h b/include/trace/events/vmscan.h index 1dd5e773114c..69590b6ffc09 100644 --- a/include/trace/events/vmscan.h +++ b/include/trace/events/vmscan.h @@ -191,6 +191,7 @@ TRACE_EVENT(mm_shrink_slab_start, TP_STRUCT__entry( __field(struct shrinker *, shr) __field(void *, shrink) + __field(int, nid) __field(long, nr_objects_to_shrink) __field(gfp_t, gfp_flags) __field(unsigned long, pgs_scanned) @@ -203,6 +204,7 @@ TRACE_EVENT(mm_shrink_slab_start, TP_fast_assign( __entry->shr = shr; __entry->shrink = shr->scan_objects; + __entry->nid = sc->nid; __entry->nr_objects_to_shrink = nr_objects_to_shrink; __entry->gfp_flags = sc->gfp_mask; __entry->pgs_scanned = pgs_scanned; @@ -212,9 +214,10 @@ TRACE_EVENT(mm_shrink_slab_start, __entry->total_scan = total_scan; ), - TP_printk("%pF %p: objects to shrink %ld gfp_flags %s pgs_scanned %ld lru_pgs %ld cache items %ld delta %lld total_scan %ld", + TP_printk("%pF %p: nid: %d objects to shrink %ld gfp_flags %s pgs_scanned %ld lru_pgs %ld cache items %ld delta %lld total_scan %ld", __entry->shrink, __entry->shr, + __entry->nid, __entry->nr_objects_to_shrink, show_gfp_flags(__entry->gfp_flags), __entry->pgs_scanned, @@ -225,13 +228,15 @@ TRACE_EVENT(mm_shrink_slab_start, ); TRACE_EVENT(mm_shrink_slab_end, - TP_PROTO(struct shrinker *shr, int shrinker_retval, + TP_PROTO(struct shrinker *shr, int nid, int shrinker_retval, long unused_scan_cnt, long new_scan_cnt, long total_scan), - TP_ARGS(shr, shrinker_retval, unused_scan_cnt, new_scan_cnt, total_scan), + TP_ARGS(shr, nid, shrinker_retval, unused_scan_cnt, new_scan_cnt, + total_scan), TP_STRUCT__entry( __field(struct shrinker *, shr) + __field(int, nid) __field(void *, shrink) __field(long, unused_scan) __field(long, new_scan) @@ -241,6 +246,7 @@ TRACE_EVENT(mm_shrink_slab_end, TP_fast_assign( __entry->shr = shr; + __entry->nid = nid; __entry->shrink = shr->scan_objects; __entry->unused_scan = unused_scan_cnt; __entry->new_scan = new_scan_cnt; @@ -248,9 +254,10 @@ TRACE_EVENT(mm_shrink_slab_end, __entry->total_scan = total_scan; ), - TP_printk("%pF %p: unused scan count %ld new scan count %ld total_scan %ld last shrinker return val %d", + TP_printk("%pF %p: nid: %d unused scan count %ld new scan count %ld total_scan %ld last shrinker return val %d", __entry->shrink, __entry->shr, + __entry->nid, __entry->unused_scan, __entry->new_scan, __entry->total_scan, diff --git a/mm/vmscan.c b/mm/vmscan.c index 15e93158bd0b..9253e188000f 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -324,7 +324,7 @@ shrink_slab_node(struct shrink_control *shrinkctl, struct shrinker *shrinker, else new_nr = atomic_long_read(&shrinker->nr_deferred[nid]); - trace_mm_shrink_slab_end(shrinker, freed, nr, new_nr, total_scan); + trace_mm_shrink_slab_end(shrinker, nid, freed, nr, new_nr, total_scan); return freed; } -- 2.20.1