From 806731a9465b42aaf887cbaf8bfee7eccc9417de Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Tue, 9 Aug 2022 11:07:02 +0300 Subject: perf tools: Do not pass NULL to parse_events() Many cases do not use the extra error information provided by parse_events and instead pass NULL as the struct parse_events_error pointer. Add a wrapper for those cases so that the pointer is never NULL. Signed-off-by: Adrian Hunter Cc: Ian Rogers Cc: Jiri Olsa Cc: Namhyung Kim Link: https://lore.kernel.org/r/20220809080702.6921-4-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/arch/arm/util/cs-etm.c | 2 +- tools/perf/arch/arm64/util/arm-spe.c | 2 +- tools/perf/arch/x86/tests/intel-cqm.c | 2 +- tools/perf/arch/x86/util/intel-bts.c | 2 +- tools/perf/arch/x86/util/intel-pt.c | 2 +- tools/perf/arch/x86/util/iostat.c | 2 +- tools/perf/arch/x86/util/topdown.c | 2 +- tools/perf/tests/code-reading.c | 2 +- tools/perf/tests/event-times.c | 2 +- tools/perf/tests/evsel-roundtrip-name.c | 4 ++-- tools/perf/tests/hists_cumulate.c | 2 +- tools/perf/tests/hists_filter.c | 4 ++-- tools/perf/tests/hists_link.c | 4 ++-- tools/perf/tests/hists_output.c | 2 +- tools/perf/tests/keep-tracking.c | 4 ++-- tools/perf/tests/perf-time-to-tsc.c | 2 +- tools/perf/tests/switch-tracking.c | 12 ++++++------ tools/perf/util/bpf-loader.c | 2 +- tools/perf/util/parse-events.c | 18 ++++++++++++------ tools/perf/util/parse-events.h | 4 ++++ tools/perf/util/perf_api_probe.c | 2 +- tools/perf/util/record.c | 2 +- 22 files changed, 45 insertions(+), 35 deletions(-) diff --git a/tools/perf/arch/arm/util/cs-etm.c b/tools/perf/arch/arm/util/cs-etm.c index 1b54638d53b0..a346d5f3dafa 100644 --- a/tools/perf/arch/arm/util/cs-etm.c +++ b/tools/perf/arch/arm/util/cs-etm.c @@ -438,7 +438,7 @@ static int cs_etm_recording_options(struct auxtrace_record *itr, if (opts->full_auxtrace) { struct evsel *tracking_evsel; - err = parse_events(evlist, "dummy:u", NULL); + err = parse_event(evlist, "dummy:u"); if (err) goto out; diff --git a/tools/perf/arch/arm64/util/arm-spe.c b/tools/perf/arch/arm64/util/arm-spe.c index 6f4db2ac5420..d4c234076541 100644 --- a/tools/perf/arch/arm64/util/arm-spe.c +++ b/tools/perf/arch/arm64/util/arm-spe.c @@ -257,7 +257,7 @@ static int arm_spe_recording_options(struct auxtrace_record *itr, evsel__set_sample_bit(arm_spe_evsel, PHYS_ADDR); /* Add dummy event to keep tracking */ - err = parse_events(evlist, "dummy:u", NULL); + err = parse_event(evlist, "dummy:u"); if (err) return err; diff --git a/tools/perf/arch/x86/tests/intel-cqm.c b/tools/perf/arch/x86/tests/intel-cqm.c index cb5b2c6c3b3b..360a082fc928 100644 --- a/tools/perf/arch/x86/tests/intel-cqm.c +++ b/tools/perf/arch/x86/tests/intel-cqm.c @@ -56,7 +56,7 @@ int test__intel_cqm_count_nmi_context(struct test_suite *test __maybe_unused, in return TEST_FAIL; } - ret = parse_events(evlist, "intel_cqm/llc_occupancy/", NULL); + ret = parse_event(evlist, "intel_cqm/llc_occupancy/"); if (ret) { pr_debug("parse_events failed, is \"intel_cqm/llc_occupancy/\" available?\n"); err = TEST_SKIP; diff --git a/tools/perf/arch/x86/util/intel-bts.c b/tools/perf/arch/x86/util/intel-bts.c index bcccfbade5c6..439c2956f3e7 100644 --- a/tools/perf/arch/x86/util/intel-bts.c +++ b/tools/perf/arch/x86/util/intel-bts.c @@ -233,7 +233,7 @@ static int intel_bts_recording_options(struct auxtrace_record *itr, struct evsel *tracking_evsel; int err; - err = parse_events(evlist, "dummy:u", NULL); + err = parse_event(evlist, "dummy:u"); if (err) return err; diff --git a/tools/perf/arch/x86/util/intel-pt.c b/tools/perf/arch/x86/util/intel-pt.c index 06c2cdfd8f2f..13933020a79e 100644 --- a/tools/perf/arch/x86/util/intel-pt.c +++ b/tools/perf/arch/x86/util/intel-pt.c @@ -426,7 +426,7 @@ static int intel_pt_track_switches(struct evlist *evlist) if (!evlist__can_select_event(evlist, sched_switch)) return -EPERM; - err = parse_events(evlist, sched_switch, NULL); + err = parse_event(evlist, sched_switch); if (err) { pr_debug2("%s: failed to parse %s, error %d\n", __func__, sched_switch, err); diff --git a/tools/perf/arch/x86/util/iostat.c b/tools/perf/arch/x86/util/iostat.c index 792cd75ade33..404de795ec0b 100644 --- a/tools/perf/arch/x86/util/iostat.c +++ b/tools/perf/arch/x86/util/iostat.c @@ -316,7 +316,7 @@ static int iostat_event_group(struct evlist *evl, sprintf(iostat_cmd, iostat_cmd_template, list->rps[idx]->pmu_idx, list->rps[idx]->pmu_idx, list->rps[idx]->pmu_idx, list->rps[idx]->pmu_idx); - ret = parse_events(evl, iostat_cmd, NULL); + ret = parse_event(evl, iostat_cmd); if (ret) goto err; } diff --git a/tools/perf/arch/x86/util/topdown.c b/tools/perf/arch/x86/util/topdown.c index 67c524324125..54810f9acd6f 100644 --- a/tools/perf/arch/x86/util/topdown.c +++ b/tools/perf/arch/x86/util/topdown.c @@ -122,5 +122,5 @@ int topdown_parse_events(struct evlist *evlist) topdown_events = TOPDOWN_L1_EVENTS; } - return parse_events(evlist, topdown_events, NULL); + return parse_event(evlist, topdown_events); } diff --git a/tools/perf/tests/code-reading.c b/tools/perf/tests/code-reading.c index 5610767b407f..95feb6ef34a0 100644 --- a/tools/perf/tests/code-reading.c +++ b/tools/perf/tests/code-reading.c @@ -638,7 +638,7 @@ static int do_test_code_reading(bool try_kcore) str = do_determine_event(excl_kernel); pr_debug("Parsing event '%s'\n", str); - ret = parse_events(evlist, str, NULL); + ret = parse_event(evlist, str); if (ret < 0) { pr_debug("parse_events failed\n"); goto out_put; diff --git a/tools/perf/tests/event-times.c b/tools/perf/tests/event-times.c index 7606eb3df92f..e155f0e0e04d 100644 --- a/tools/perf/tests/event-times.c +++ b/tools/perf/tests/event-times.c @@ -174,7 +174,7 @@ static int test_times(int (attach)(struct evlist *), goto out_err; } - err = parse_events(evlist, "cpu-clock:u", NULL); + err = parse_event(evlist, "cpu-clock:u"); if (err) { pr_debug("failed to parse event cpu-clock:u\n"); goto out_err; diff --git a/tools/perf/tests/evsel-roundtrip-name.c b/tools/perf/tests/evsel-roundtrip-name.c index 9d3c64974f77..e94fed901992 100644 --- a/tools/perf/tests/evsel-roundtrip-name.c +++ b/tools/perf/tests/evsel-roundtrip-name.c @@ -27,7 +27,7 @@ static int perf_evsel__roundtrip_cache_name_test(void) for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) { __evsel__hw_cache_type_op_res_name(type, op, i, name, sizeof(name)); - err = parse_events(evlist, name, NULL); + err = parse_event(evlist, name); if (err) ret = err; } @@ -75,7 +75,7 @@ static int __perf_evsel__name_array_test(const char *const names[], int nr_names return -ENOMEM; for (i = 0; i < nr_names; ++i) { - err = parse_events(evlist, names[i], NULL); + err = parse_event(evlist, names[i]); if (err) { pr_debug("failed to parse event '%s', err %d\n", names[i], err); diff --git a/tools/perf/tests/hists_cumulate.c b/tools/perf/tests/hists_cumulate.c index 17f4fcd6bdce..b42d37ff2399 100644 --- a/tools/perf/tests/hists_cumulate.c +++ b/tools/perf/tests/hists_cumulate.c @@ -706,7 +706,7 @@ static int test__hists_cumulate(struct test_suite *test __maybe_unused, int subt TEST_ASSERT_VAL("No memory", evlist); - err = parse_events(evlist, "cpu-clock", NULL); + err = parse_event(evlist, "cpu-clock"); if (err) goto out; err = TEST_FAIL; diff --git a/tools/perf/tests/hists_filter.c b/tools/perf/tests/hists_filter.c index 08cbeb9e39ae..8e1ceeb9b7b6 100644 --- a/tools/perf/tests/hists_filter.c +++ b/tools/perf/tests/hists_filter.c @@ -111,10 +111,10 @@ static int test__hists_filter(struct test_suite *test __maybe_unused, int subtes TEST_ASSERT_VAL("No memory", evlist); - err = parse_events(evlist, "cpu-clock", NULL); + err = parse_event(evlist, "cpu-clock"); if (err) goto out; - err = parse_events(evlist, "task-clock", NULL); + err = parse_event(evlist, "task-clock"); if (err) goto out; err = TEST_FAIL; diff --git a/tools/perf/tests/hists_link.c b/tools/perf/tests/hists_link.c index c575e13a850d..14b2ff808b5e 100644 --- a/tools/perf/tests/hists_link.c +++ b/tools/perf/tests/hists_link.c @@ -276,10 +276,10 @@ static int test__hists_link(struct test_suite *test __maybe_unused, int subtest if (evlist == NULL) return -ENOMEM; - err = parse_events(evlist, "cpu-clock", NULL); + err = parse_event(evlist, "cpu-clock"); if (err) goto out; - err = parse_events(evlist, "task-clock", NULL); + err = parse_event(evlist, "task-clock"); if (err) goto out; diff --git a/tools/perf/tests/hists_output.c b/tools/perf/tests/hists_output.c index 0bde4a768c15..62b0093253e3 100644 --- a/tools/perf/tests/hists_output.c +++ b/tools/perf/tests/hists_output.c @@ -593,7 +593,7 @@ static int test__hists_output(struct test_suite *test __maybe_unused, int subtes TEST_ASSERT_VAL("No memory", evlist); - err = parse_events(evlist, "cpu-clock", NULL); + err = parse_event(evlist, "cpu-clock"); if (err) goto out; err = TEST_FAIL; diff --git a/tools/perf/tests/keep-tracking.c b/tools/perf/tests/keep-tracking.c index dd2067312452..8f4f9b632e1e 100644 --- a/tools/perf/tests/keep-tracking.c +++ b/tools/perf/tests/keep-tracking.c @@ -89,8 +89,8 @@ static int test__keep_tracking(struct test_suite *test __maybe_unused, int subte perf_evlist__set_maps(&evlist->core, cpus, threads); - CHECK__(parse_events(evlist, "dummy:u", NULL)); - CHECK__(parse_events(evlist, "cycles:u", NULL)); + CHECK__(parse_event(evlist, "dummy:u")); + CHECK__(parse_event(evlist, "cycles:u")); evlist__config(evlist, &opts, NULL); diff --git a/tools/perf/tests/perf-time-to-tsc.c b/tools/perf/tests/perf-time-to-tsc.c index 7c7d20fc503a..26ce30a35191 100644 --- a/tools/perf/tests/perf-time-to-tsc.c +++ b/tools/perf/tests/perf-time-to-tsc.c @@ -100,7 +100,7 @@ static int test__perf_time_to_tsc(struct test_suite *test __maybe_unused, int su perf_evlist__set_maps(&evlist->core, cpus, threads); - CHECK__(parse_events(evlist, "cycles:u", NULL)); + CHECK__(parse_event(evlist, "cycles:u")); evlist__config(evlist, &opts, NULL); diff --git a/tools/perf/tests/switch-tracking.c b/tools/perf/tests/switch-tracking.c index 6f53bee33f7c..2d46af9ef935 100644 --- a/tools/perf/tests/switch-tracking.c +++ b/tools/perf/tests/switch-tracking.c @@ -364,7 +364,7 @@ static int test__switch_tracking(struct test_suite *test __maybe_unused, int sub perf_evlist__set_maps(&evlist->core, cpus, threads); /* First event */ - err = parse_events(evlist, "cpu-clock:u", NULL); + err = parse_event(evlist, "cpu-clock:u"); if (err) { pr_debug("Failed to parse event dummy:u\n"); goto out_err; @@ -375,14 +375,14 @@ static int test__switch_tracking(struct test_suite *test __maybe_unused, int sub /* Second event */ if (perf_pmu__has_hybrid()) { cycles = "cpu_core/cycles/u"; - err = parse_events(evlist, cycles, NULL); + err = parse_event(evlist, cycles); if (err) { cycles = "cpu_atom/cycles/u"; pr_debug("Trying %s\n", cycles); - err = parse_events(evlist, cycles, NULL); + err = parse_event(evlist, cycles); } } else { - err = parse_events(evlist, cycles, NULL); + err = parse_event(evlist, cycles); } if (err) { pr_debug("Failed to parse event %s\n", cycles); @@ -398,7 +398,7 @@ static int test__switch_tracking(struct test_suite *test __maybe_unused, int sub goto out; } - err = parse_events(evlist, sched_switch, NULL); + err = parse_event(evlist, sched_switch); if (err) { pr_debug("Failed to parse event %s\n", sched_switch); goto out_err; @@ -428,7 +428,7 @@ static int test__switch_tracking(struct test_suite *test __maybe_unused, int sub evsel__set_sample_bit(cycles_evsel, TIME); /* Fourth event */ - err = parse_events(evlist, "dummy:u", NULL); + err = parse_event(evlist, "dummy:u"); if (err) { pr_debug("Failed to parse event dummy:u\n"); goto out_err; diff --git a/tools/perf/util/bpf-loader.c b/tools/perf/util/bpf-loader.c index d2c9b09ddb48..e2052f4fed33 100644 --- a/tools/perf/util/bpf-loader.c +++ b/tools/perf/util/bpf-loader.c @@ -1879,7 +1879,7 @@ struct evsel *bpf__setup_output_event(struct evlist *evlist, const char *name) if (asprintf(&event_definition, "bpf-output/no-inherit=1,name=%s/", name) < 0) return ERR_PTR(-ENOMEM); - err = parse_events(evlist, event_definition, NULL); + err = parse_event(evlist, event_definition); free(event_definition); if (err) { diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c index dfc7d7a0ec4e..f05e15acd33f 100644 --- a/tools/perf/util/parse-events.c +++ b/tools/perf/util/parse-events.c @@ -2240,6 +2240,17 @@ int __parse_events(struct evlist *evlist, const char *str, return ret; } +int parse_event(struct evlist *evlist, const char *str) +{ + struct parse_events_error err; + int ret; + + parse_events_error__init(&err); + ret = parse_events(evlist, str, &err); + parse_events_error__exit(&err); + return ret; +} + void parse_events_error__init(struct parse_events_error *err) { bzero(err, sizeof(*err)); @@ -2256,13 +2267,8 @@ void parse_events_error__exit(struct parse_events_error *err) void parse_events_error__handle(struct parse_events_error *err, int idx, char *str, char *help) { - if (WARN(!str, "WARNING: failed to provide error string\n")) - goto out_free; - if (!err) { - /* Assume caller does not want message printed */ - pr_debug("event syntax error: %s\n", str); + if (WARN(!str || !err, "WARNING: failed to provide error string or struct\n")) goto out_free; - } switch (err->num_errors) { case 0: err->idx = idx; diff --git a/tools/perf/util/parse-events.h b/tools/perf/util/parse-events.h index ba9fa3ddaf6e..7e6a601d9cd0 100644 --- a/tools/perf/util/parse-events.h +++ b/tools/perf/util/parse-events.h @@ -24,15 +24,19 @@ const char *event_type(int type); int parse_events_option(const struct option *opt, const char *str, int unset); int parse_events_option_new_evlist(const struct option *opt, const char *str, int unset); +__attribute__((nonnull(1, 2, 3))) int __parse_events(struct evlist *evlist, const char *str, struct parse_events_error *error, struct perf_pmu *fake_pmu); +__attribute__((nonnull)) static inline int parse_events(struct evlist *evlist, const char *str, struct parse_events_error *err) { return __parse_events(evlist, str, err, NULL); } +int parse_event(struct evlist *evlist, const char *str); + int parse_events_terms(struct list_head *terms, const char *str); int parse_filter(const struct option *opt, const char *str, int unset); int exclude_perf(const struct option *opt, const char *arg, int unset); diff --git a/tools/perf/util/perf_api_probe.c b/tools/perf/util/perf_api_probe.c index c28dd50bd571..e1e2d701599c 100644 --- a/tools/perf/util/perf_api_probe.c +++ b/tools/perf/util/perf_api_probe.c @@ -23,7 +23,7 @@ static int perf_do_probe_api(setup_probe_fn_t fn, struct perf_cpu cpu, const cha if (!evlist) return -ENOMEM; - if (parse_events(evlist, str, NULL)) + if (parse_event(evlist, str)) goto out_delete; evsel = evlist__first(evlist); diff --git a/tools/perf/util/record.c b/tools/perf/util/record.c index b529636ab3ea..7b58f6c7c69d 100644 --- a/tools/perf/util/record.c +++ b/tools/perf/util/record.c @@ -238,7 +238,7 @@ bool evlist__can_select_event(struct evlist *evlist, const char *str) if (!temp_evlist) return false; - err = parse_events(temp_evlist, str, NULL); + err = parse_event(temp_evlist, str); if (err) goto out_delete; -- cgit v1.2.3