The --all-cgroups option is to enable cgroup profiling support. It tells kernel to record CGROUP events in the ring buffer so that perf report can identify task/cgroup association later.
Signed-off-by: Namhyung Kim <[email protected]> --- tools/perf/Documentation/perf-record.txt | 5 ++++- tools/perf/builtin-record.c | 5 +++++ tools/perf/util/evsel.c | 5 +++++ tools/perf/util/record.h | 1 + 4 files changed, 15 insertions(+), 1 deletion(-) diff --git a/tools/perf/Documentation/perf-record.txt b/tools/perf/Documentation/perf-record.txt index c6f9f31b6039..fa2e83f72461 100644 --- a/tools/perf/Documentation/perf-record.txt +++ b/tools/perf/Documentation/perf-record.txt @@ -382,7 +382,10 @@ displayed with the weight and local_weight sort keys. This currently works for abort events and some memory events in precise mode on modern Intel CPUs. --namespaces:: -Record events of type PERF_RECORD_NAMESPACES. +Record events of type PERF_RECORD_NAMESPACES. This enables 'cgroup_id' sort key. + +--all-cgroups:: +Record events of type PERF_RECORD_CGROUP. This enables 'cgroup' sort key. --transaction:: Record transaction flags for transaction related events. diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index a6e3c4413b39..918af5e9f05d 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -1354,6 +1354,9 @@ static int __cmd_record(struct record *rec, int argc, const char **argv) if (rec->opts.record_namespaces) tool->namespace_events = true; + if (rec->opts.record_cgroup) + tool->cgroup_events = true; + if (rec->opts.auxtrace_snapshot_mode || rec->switch_output.enabled) { signal(SIGUSR2, snapshot_sig_handler); if (rec->opts.auxtrace_snapshot_mode) @@ -2215,6 +2218,8 @@ static struct option __record_options[] = { "per thread proc mmap processing timeout in ms"), OPT_BOOLEAN(0, "namespaces", &record.opts.record_namespaces, "Record namespaces events"), + OPT_BOOLEAN(0, "all-cgroups", &record.opts.record_cgroup, + "Record cgroup events"), OPT_BOOLEAN(0, "switch-events", &record.opts.record_switch_events, "Record context switch events"), OPT_BOOLEAN_FLAG(0, "all-kernel", &record.opts.all_kernel, diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index 86a38679cad1..390ecb554446 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -1077,6 +1077,11 @@ void perf_evsel__config(struct evsel *evsel, struct record_opts *opts, if (opts->record_namespaces) attr->namespaces = track; + if (opts->record_cgroup) { + attr->cgroup = track; + perf_evsel__set_sample_bit(evsel, CGROUP); + } + if (opts->record_switch_events) attr->context_switch = track; diff --git a/tools/perf/util/record.h b/tools/perf/util/record.h index 00275afc524d..740d110fc770 100644 --- a/tools/perf/util/record.h +++ b/tools/perf/util/record.h @@ -33,6 +33,7 @@ struct record_opts { bool auxtrace_snapshot_mode; bool auxtrace_snapshot_on_exit; bool record_namespaces; + bool record_cgroup; bool record_switch_events; bool all_kernel; bool all_user; -- 2.23.0.187.g17f5b7556c-goog
