libperf: Allow NULL in perf_cpu_map__idx()
Return -1, not found, if NULL is passed. Signed-off-by: Ian Rogers <irogers@google.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: John Garry <john.garry@huawei.com> Cc: Kajol Jain <kjain@linux.ibm.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Mike Leach <mike.leach@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Clarke <pc@us.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Riccardo Mancini <rickyman7@gmail.com> Cc: Stephane Eranian <eranian@google.com> Cc: Suzuki Poulouse <suzuki.poulose@arm.com> Cc: Vineet Singh <vineet.singh@intel.com> Cc: coresight@lists.linaro.org Cc: linux-arm-kernel@lists.infradead.org Cc: zhengjun.xing@intel.com Link: https://lore.kernel.org/r/20220105061351.120843-34-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
parent
f9551b3f62
commit
80b82f3b65
@ -270,8 +270,13 @@ bool perf_cpu_map__empty(const struct perf_cpu_map *map)
|
||||
|
||||
int perf_cpu_map__idx(const struct perf_cpu_map *cpus, int cpu)
|
||||
{
|
||||
int low = 0, high = cpus->nr;
|
||||
int low, high;
|
||||
|
||||
if (!cpus)
|
||||
return -1;
|
||||
|
||||
low = 0;
|
||||
high = cpus->nr;
|
||||
while (low < high) {
|
||||
int idx = (low + high) / 2,
|
||||
cpu_at_idx = cpus->map[idx];
|
||||
|
Loading…
x
Reference in New Issue
Block a user