lkml.org 
[lkml]   [2021]   [Dec]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
Subject[PATCH v3 22/48] perf cpumap: Trim the cpu_aggr_map
From
cpu_aggr_map__new removes duplicates, when this happens shrink the
array.

Reviewed-by: James Clark <james.clark@arm.com>
Signed-off-by: Ian Rogers <irogers@google.com>
---
tools/perf/util/cpumap.c | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/tools/perf/util/cpumap.c b/tools/perf/util/cpumap.c
index 8a72ee996722..3061b4369ab5 100644
--- a/tools/perf/util/cpumap.c
+++ b/tools/perf/util/cpumap.c
@@ -185,7 +185,15 @@ struct cpu_aggr_map *cpu_aggr_map__new(const struct perf_cpu_map *cpus,
c->nr++;
}
}
-
+ /* Trim. */
+ if (c->nr != cpus->nr) {
+ struct cpu_aggr_map *trimmed_c =
+ realloc(c,
+ sizeof(struct cpu_aggr_map) + sizeof(struct aggr_cpu_id) * c->nr);
+
+ if (trimmed_c)
+ c = trimmed_c;
+ }
/* ensure we process id in increasing order */
qsort(c->map, c->nr, sizeof(struct aggr_cpu_id), aggr_cpu_id__cmp);

--
2.34.1.448.ga2b2bfdf31-goog
\
 
 \ /
  Last update: 2021-12-30 08:23    [W:0.192 / U:0.032 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site