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Groups > linux.kernel > #1439925
| From | Janani Ravichandran <janani.rvchndrn@gmail.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH 3/3] Add name fields in shrinker tracepoint definitions |
| Date | 2016-07-09 11:10 +0200 |
| Message-ID | <rSWqR-Vp-21@gated-at.bofh.it> (permalink) |
| References | <rSVXP-tW-5@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
Currently, the mm_shrink_slab_start and mm_shrink_slab_end
tracepoints tell us how much time was spent in a shrinker, the number of
objects scanned, etc. But there is no information about the identity of
the shrinker. This patch enables the trace output to display names of
shrinkers.
---
include/trace/events/vmscan.h | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/include/trace/events/vmscan.h b/include/trace/events/vmscan.h
index 0101ef3..be4c5b0 100644
--- a/include/trace/events/vmscan.h
+++ b/include/trace/events/vmscan.h
@@ -189,6 +189,7 @@ TRACE_EVENT(mm_shrink_slab_start,
cache_items, delta, total_scan),
TP_STRUCT__entry(
+ __field(char *, name)
__field(struct shrinker *, shr)
__field(void *, shrink)
__field(int, nid)
@@ -202,6 +203,7 @@ TRACE_EVENT(mm_shrink_slab_start,
),
TP_fast_assign(
+ __entry->name = shr->name;
__entry->shr = shr;
__entry->shrink = shr->scan_objects;
__entry->nid = sc->nid;
@@ -214,7 +216,8 @@ TRACE_EVENT(mm_shrink_slab_start,
__entry->total_scan = total_scan;
),
- 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",
+ TP_printk("name: %s %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->name,
__entry->shrink,
__entry->shr,
__entry->nid,
@@ -235,6 +238,7 @@ TRACE_EVENT(mm_shrink_slab_end,
total_scan),
TP_STRUCT__entry(
+ __field(char *, name)
__field(struct shrinker *, shr)
__field(int, nid)
__field(void *, shrink)
@@ -245,6 +249,7 @@ TRACE_EVENT(mm_shrink_slab_end,
),
TP_fast_assign(
+ __entry->name = shr->name;
__entry->shr = shr;
__entry->nid = nid;
__entry->shrink = shr->scan_objects;
@@ -254,7 +259,8 @@ TRACE_EVENT(mm_shrink_slab_end,
__entry->total_scan = total_scan;
),
- TP_printk("%pF %p: nid: %d unused scan count %ld new scan count %ld total_scan %ld last shrinker return val %d",
+ TP_printk("name: %s %pF %p: nid: %d unused scan count %ld new scan count %ld total_scan %ld last shrinker return val %d",
+ __entry->name,
__entry->shrink,
__entry->shr,
__entry->nid,
--
2.7.0
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[PATCH 0/3] Add names of shrinkers and have tracepoints display them Janani Ravichandran <janani.rvchndrn@gmail.com> - 2016-07-09 10:40 +0200
[PATCH 1/3] Add a new field to struct shrinker Janani Ravichandran <janani.rvchndrn@gmail.com> - 2016-07-09 10:50 +0200
Re: [PATCH 1/3] Add a new field to struct shrinker Michal Hocko <mhocko@kernel.org> - 2016-07-11 08:40 +0200
Re: [PATCH 1/3] Add a new field to struct shrinker Rik van Riel <riel@surriel.com> - 2016-07-11 16:40 +0200
Re: [PATCH 1/3] Add a new field to struct shrinker Michal Hocko <mhocko@kernel.org> - 2016-07-11 16:40 +0200
Re: [PATCH 1/3] Add a new field to struct shrinker Janani Ravichandran <janani.rvchndrn@gmail.com> - 2016-07-20 16:50 +0200
Re: [PATCH 1/3] Add a new field to struct shrinker Michal Hocko <mhocko@kernel.org> - 2016-07-20 17:00 +0200
Re: [PATCH 1/3] Add a new field to struct shrinker Tony Jones <tonyj@suse.de> - 2016-07-23 03:30 +0200
Re: [PATCH 1/3] Add a new field to struct shrinker Tony Jones <tonyj@suse.de> - 2016-07-23 06:10 +0200
Re: [PATCH 1/3] Add a new field to struct shrinker Rik van Riel <riel@surriel.com> - 2016-07-23 21:50 +0200
Re: [PATCH 1/3] Add a new field to struct shrinker Tony Jones <tonyj@suse.de> - 2016-07-24 01:30 +0200
[PATCH 2/3] Update name field for all shrinker instances Janani Ravichandran <janani.rvchndrn@gmail.com> - 2016-07-09 11:00 +0200
Re: [PATCH 2/3] Update name field for all shrinker instances Tony Jones <tonyj@suse.de> - 2016-07-13 02:50 +0200
[PATCH 3/3] Add name fields in shrinker tracepoint definitions Janani Ravichandran <janani.rvchndrn@gmail.com> - 2016-07-09 11:10 +0200
Re: [PATCH 3/3] Add name fields in shrinker tracepoint definitions Vlastimil Babka <vbabka@suse.cz> - 2016-07-11 16:20 +0200
Re: [PATCH 3/3] Add name fields in shrinker tracepoint definitions Tony Jones <tonyj@suse.de> - 2016-07-13 02:40 +0200
Re: [PATCH 3/3] Add name fields in shrinker tracepoint definitions Janani Ravichandran <janani.rvchndrn@gmail.com> - 2016-07-13 08:20 +0200
Re: [PATCH 3/3] Add name fields in shrinker tracepoint definitions Tony Jones <tonyj@suse.de> - 2016-07-13 21:20 +0200
Re: [PATCH 3/3] Add name fields in shrinker tracepoint definitions Rik van Riel <riel@surriel.com> - 2016-07-13 21:50 +0200
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