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perf affinity: Allow passing a NULL arg to affinity__cleanup()

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Just like with free(), NULL is checked to avoid having all callers do
it.

Its convenient for when not using affinity setup/cleanup for dummy CPU
maps, i.e. CPU maps for pid targets.

Acked-by: Ian Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/r/20220117160931.1191712-2-acme@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo 2022-01-17 13:09:28 -03:00
parent 4624f19932
commit 1855b796f2
1 changed files with 7 additions and 1 deletions
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8
tools/perf/util/affinity.c
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@ -62,7 +62,7 @@ void affinity__set(struct affinity *a, int cpu)
clear_bit(cpu, a->sched_cpus);
}
void affinity__cleanup(struct affinity *a)
static void __affinity__cleanup(struct affinity *a)
{
int cpu_set_size = get_cpu_set_size();
@ -71,3 +71,9 @@ void affinity__cleanup(struct affinity *a)
zfree(&a->sched_cpus);
zfree(&a->orig_cpus);
}
void affinity__cleanup(struct affinity *a)
{
if (a != NULL)
__affinity__cleanup(a);
}