diff options
| -rw-r--r-- | tools/perf/builtin-record.c | 6 | ||||
| -rw-r--r-- | tools/perf/util/perf_api_probe.c | 10 | ||||
| -rw-r--r-- | tools/perf/util/perf_api_probe.h | 1 |
3 files changed, 17 insertions, 0 deletions
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index 3337b5f93336..84803abeb942 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -2714,6 +2714,12 @@ int cmd_record(int argc, const char **argv) rec->no_buildid = true; } + if (rec->opts.record_cgroup && !perf_can_record_cgroup()) { + pr_err("Kernel has no cgroup sampling support.\n"); + err = -EINVAL; + goto out_opts; + } + if (rec->opts.kcore) rec->data.is_dir = true; diff --git a/tools/perf/util/perf_api_probe.c b/tools/perf/util/perf_api_probe.c index 829af17a0867..020411682a3c 100644 --- a/tools/perf/util/perf_api_probe.c +++ b/tools/perf/util/perf_api_probe.c @@ -103,6 +103,11 @@ static void perf_probe_build_id(struct evsel *evsel) evsel->core.attr.build_id = 1; } +static void perf_probe_cgroup(struct evsel *evsel) +{ + evsel->core.attr.cgroup = 1; +} + bool perf_can_sample_identifier(void) { return perf_probe_api(perf_probe_sample_identifier); @@ -182,3 +187,8 @@ bool perf_can_record_build_id(void) { return perf_probe_api(perf_probe_build_id); } + +bool perf_can_record_cgroup(void) +{ + return perf_probe_api(perf_probe_cgroup); +} diff --git a/tools/perf/util/perf_api_probe.h b/tools/perf/util/perf_api_probe.h index f12ca55f509a..b104168efb15 100644 --- a/tools/perf/util/perf_api_probe.h +++ b/tools/perf/util/perf_api_probe.h @@ -12,5 +12,6 @@ bool perf_can_record_switch_events(void); bool perf_can_record_text_poke_events(void); bool perf_can_sample_identifier(void); bool perf_can_record_build_id(void); +bool perf_can_record_cgroup(void); #endif // __PERF_API_PROBE_H |