6.6-stable review patch. If anyone has any objections, please let me know.
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From: Yang Jihong yangjihong1@huawei.com
[ Upstream commit 9c95e4ef065723496442898614d09a9a916eab81 ]
Currently, intel-bts, intel-pt, and arm-spe may add tracking event to the evlist. We may need to search for the tracking event for some settings.
Therefore, add evlist__findnew_tracking_event() helper.
If system_wide is true, evlist__findnew_tracking_event() set the cpu map of the evsel to all online CPUs.
Signed-off-by: Yang Jihong yangjihong1@huawei.com Acked-by: Adrian Hunter adrian.hunter@intel.com Tested-by: Ravi Bangoria ravi.bangoria@amd.com Cc: Alexander Shishkin alexander.shishkin@linux.intel.com Cc: Andi Kleen ak@linux.intel.com Cc: Anshuman Khandual anshuman.khandual@arm.com Cc: Ian Rogers irogers@google.com Cc: Ingo Molnar mingo@redhat.com Cc: James Clark james.clark@arm.com Cc: Jiri Olsa jolsa@kernel.org Cc: Kan Liang kan.liang@linux.intel.com Cc: Mark Rutland mark.rutland@arm.com Cc: Namhyung Kim namhyung@kernel.org Cc: Peter Zijlstra peterz@infradead.org Cc: Thomas Richter tmricht@linux.ibm.com Link: https://lore.kernel.org/r/20230904023340.12707-3-yangjihong1@huawei.com Signed-off-by: Arnaldo Carvalho de Melo acme@redhat.com Stable-dep-of: 792bc998baf9 ("perf record: Fix debug message placement for test consumption") Signed-off-by: Sasha Levin sashal@kernel.org --- tools/perf/builtin-record.c | 11 +++-------- tools/perf/util/evlist.c | 18 ++++++++++++++++++ tools/perf/util/evlist.h | 1 + 3 files changed, 22 insertions(+), 8 deletions(-)
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index 5c54fda63b581..16e21a3e883a7 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -1293,14 +1293,9 @@ static int record__open(struct record *rec) */ if (opts->target.initial_delay || target__has_cpu(&opts->target) || perf_pmus__num_core_pmus() > 1) { - pos = evlist__get_tracking_event(evlist); - if (!evsel__is_dummy_event(pos)) { - /* Set up dummy event. */ - if (evlist__add_dummy(evlist)) - return -ENOMEM; - pos = evlist__last(evlist); - evlist__set_tracking_event(evlist, pos); - } + pos = evlist__findnew_tracking_event(evlist, false); + if (!pos) + return -ENOMEM;
/* * Enable the dummy event when the process is forked for diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index 8bf537a29809a..eb1dd29c538d5 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -1702,6 +1702,24 @@ void evlist__set_tracking_event(struct evlist *evlist, struct evsel *tracking_ev tracking_evsel->tracking = true; }
+struct evsel *evlist__findnew_tracking_event(struct evlist *evlist, bool system_wide) +{ + struct evsel *evsel; + + evsel = evlist__get_tracking_event(evlist); + if (!evsel__is_dummy_event(evsel)) { + evsel = evlist__add_aux_dummy(evlist, system_wide); + if (!evsel) + return NULL; + + evlist__set_tracking_event(evlist, evsel); + } else if (system_wide) { + perf_evlist__go_system_wide(&evlist->core, &evsel->core); + } + + return evsel; +} + struct evsel *evlist__find_evsel_by_str(struct evlist *evlist, const char *str) { struct evsel *evsel; diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h index d63486261fd2a..cb91dc9117a27 100644 --- a/tools/perf/util/evlist.h +++ b/tools/perf/util/evlist.h @@ -387,6 +387,7 @@ bool evlist_cpu_iterator__end(const struct evlist_cpu_iterator *evlist_cpu_itr);
struct evsel *evlist__get_tracking_event(struct evlist *evlist); void evlist__set_tracking_event(struct evlist *evlist, struct evsel *tracking_evsel); +struct evsel *evlist__findnew_tracking_event(struct evlist *evlist, bool system_wide);
struct evsel *evlist__find_evsel_by_str(struct evlist *evlist, const char *str);