diff options
| author | Kyle Meyer <meyerk@hpe.com> | 2019-08-27 16:43:49 -0500 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2019-08-29 17:38:32 -0300 |
| commit | 7df4e36a4785618f0c63f3dc2bacb164780ab0f6 (patch) | |
| tree | c05351ee5e8b8b46c8a5fb5ec090eac6a40b4943 /tools/perf | |
| parent | 92b5a1545ad51e8225e691e9a29ba33cc9fe37bc (diff) | |
perf session: Replace MAX_NR_CPUS with perf_env::nr_cpus_online
nr_cpus, the number of CPUs online during a record session bound by
MAX_NR_CPUS, can be used as a dynamic alternative for MAX_NR_CPUS in
perf_session__cpu_bitmap.
Signed-off-by: Kyle Meyer <kyle.meyer@hpe.com>
Reviewed-by: Jiri Olsa <jolsa@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Russ Anderson <russ.anderson@hpe.com>
Link: http://lore.kernel.org/lkml/20190827214352.94272-5-meyerk@stormcage.eag.rdlabs.hpecorp.net
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf')
| -rw-r--r-- | tools/perf/util/session.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c index 7350b0dfbc1e..13486bcf74a0 100644 --- a/tools/perf/util/session.c +++ b/tools/perf/util/session.c @@ -2292,6 +2292,7 @@ int perf_session__cpu_bitmap(struct perf_session *session, { int i, err = -1; struct perf_cpu_map *map; + int nr_cpus = min(session->header.env.nr_cpus_online, MAX_NR_CPUS); for (i = 0; i < PERF_TYPE_MAX; ++i) { struct evsel *evsel; @@ -2316,7 +2317,7 @@ int perf_session__cpu_bitmap(struct perf_session *session, for (i = 0; i < map->nr; i++) { int cpu = map->map[i]; - if (cpu >= MAX_NR_CPUS) { + if (cpu >= nr_cpus) { pr_err("Requested CPU %d too large. " "Consider raising MAX_NR_CPUS\n", cpu); goto out_delete_map; |