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author | Jin Yao <yao.jin@linux.intel.com> | 2021-04-27 15:01:30 +0800 |
---|---|---|
committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2021-04-29 10:30:59 -0300 |
commit | 91c0f5ec812f38f5e900b5557254baf563c4a2e3 (patch) | |
tree | 9ba4293deaa87df655b7d6800c069a89e12be1df /tools/perf/builtin-record.c | |
parent | 660e533e87ff4e66434f90fca987b929d4eb0059 (diff) | |
download | linux-stable-91c0f5ec812f38f5e900b5557254baf563c4a2e3.tar.gz linux-stable-91c0f5ec812f38f5e900b5557254baf563c4a2e3.tar.bz2 linux-stable-91c0f5ec812f38f5e900b5557254baf563c4a2e3.zip |
perf record: Uniquify hybrid event name
For perf-record, it would be useful to tell user the pmu which the
event belongs to.
For example,
# perf record -a -- sleep 1
# perf report
# To display the perf.data header info, please use --header/--header-only options.
#
#
# Total Lost Samples: 0
#
# Samples: 106 of event 'cpu_core/cycles/'
# Event count (approx.): 22043448
#
# Overhead Command Shared Object Symbol
# ........ ............ ....................... ............................
#
...
Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Reviewed-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20210427070139.25256-18-yao.jin@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/builtin-record.c')
-rw-r--r-- | tools/perf/builtin-record.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index 6af46c6a4fd8..3337b5f93336 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -1605,6 +1605,32 @@ static void hit_auxtrace_snapshot_trigger(struct record *rec) } } +static void record__uniquify_name(struct record *rec) +{ + struct evsel *pos; + struct evlist *evlist = rec->evlist; + char *new_name; + int ret; + + if (!perf_pmu__has_hybrid()) + return; + + evlist__for_each_entry(evlist, pos) { + if (!evsel__is_hybrid(pos)) + continue; + + if (strchr(pos->name, '/')) + continue; + + ret = asprintf(&new_name, "%s/%s/", + pos->pmu_name, pos->name); + if (ret) { + free(pos->name); + pos->name = new_name; + } + } +} + static int __cmd_record(struct record *rec, int argc, const char **argv) { int err; @@ -1709,6 +1735,8 @@ static int __cmd_record(struct record *rec, int argc, const char **argv) if (data->is_pipe && rec->evlist->core.nr_entries == 1) rec->opts.sample_id = true; + record__uniquify_name(rec); + if (record__open(rec) != 0) { err = -1; goto out_child; |