Messages in this thread Patch in this message | | | From | James Clark <> | Subject | [PATCH v5 02/12] perf tools: Use allocator for perf_cpu_map | Date | Tue, 17 Nov 2020 16:48:35 +0200 |
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Use the existing allocator for perf_cpu_map to avoid use of raw malloc. This could cause an issue in later commits where the size of perf_cpu_map is changed.
No functional changes.
Signed-off-by: James Clark <james.clark@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Thomas Richter <tmricht@linux.ibm.com> Cc: John Garry <john.garry@huawei.com> --- tools/perf/util/cpumap.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/tools/perf/util/cpumap.c b/tools/perf/util/cpumap.c index dc5c5e6fc502..20e3a75953fc 100644 --- a/tools/perf/util/cpumap.c +++ b/tools/perf/util/cpumap.c @@ -132,15 +132,16 @@ int cpu_map__build_map(struct perf_cpu_map *cpus, struct perf_cpu_map **res, int (*f)(struct perf_cpu_map *map, int cpu, void *data), void *data) { - struct perf_cpu_map *c; int nr = cpus->nr; + struct perf_cpu_map *c = perf_cpu_map__empty_new(nr); int cpu, s1, s2; - /* allocate as much as possible */ - c = calloc(1, sizeof(*c) + nr * sizeof(int)); if (!c) return -1; + /* Reset size as it may only be partially filled */ + c->nr = 0; + for (cpu = 0; cpu < nr; cpu++) { s1 = f(cpus, cpu, data); for (s2 = 0; s2 < c->nr; s2++) { @@ -155,7 +156,6 @@ int cpu_map__build_map(struct perf_cpu_map *cpus, struct perf_cpu_map **res, /* ensure we process id in increasing order */ qsort(c->map, c->nr, sizeof(int), cmp_ids); - refcount_set(&c->refcnt, 1); *res = c; return 0; } -- 2.28.0
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