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authorAlexander Gordeev <agordeev@linux.ibm.com>2020-08-13 14:30:42 +0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2020-08-13 16:02:00 +0300
commit509f68e327d0c87e9bc93cb138e445c506ae9ce9 (patch)
treeaf0b20ecf5a20c8ca6741a776df7b86463e8d4a9 /tools
parentfa5c893181ed2ca2f96552f50073786d2cfce6c0 (diff)
downloadlinux-509f68e327d0c87e9bc93cb138e445c506ae9ce9.tar.xz
perf bench numa: Fix cpumask memory leak in node_has_cpus()
Couple numa_allocate_cpumask() and numa_free_cpumask() functions Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com> Reviewed-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Balamuruhan S <bala24@linux.vnet.ibm.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Satheesh Rajendran <sathnaga@linux.vnet.ibm.com> Link: http://lore.kernel.org/lkml/20200813113041.GA1685@oc3871087118.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
-rw-r--r--tools/perf/bench/numa.c13
1 files changed, 9 insertions, 4 deletions
diff --git a/tools/perf/bench/numa.c b/tools/perf/bench/numa.c
index 31e2601d39c8..9066511aed47 100644
--- a/tools/perf/bench/numa.c
+++ b/tools/perf/bench/numa.c
@@ -248,16 +248,21 @@ static int is_node_present(int node)
static bool node_has_cpus(int node)
{
struct bitmask *cpu = numa_allocate_cpumask();
+ bool ret = false; /* fall back to nocpus */
unsigned int i;
- if (cpu && !numa_node_to_cpus(node, cpu)) {
+ BUG_ON(!cpu);
+ if (!numa_node_to_cpus(node, cpu)) {
for (i = 0; i < cpu->size; i++) {
- if (numa_bitmask_isbitset(cpu, i))
- return true;
+ if (numa_bitmask_isbitset(cpu, i)) {
+ ret = true;
+ break;
+ }
}
}
+ numa_free_cpumask(cpu);
- return false; /* lets fall back to nocpus safely */
+ return ret;
}
static cpu_set_t bind_to_cpu(int target_cpu)