diff options
Diffstat (limited to 'tools/perf')
-rw-r--r-- | tools/perf/builtin-stat.c | 2 | ||||
-rw-r--r-- | tools/perf/tests/code-reading.c | 2 | ||||
-rw-r--r-- | tools/perf/tests/evsel-roundtrip-name.c | 4 | ||||
-rw-r--r-- | tools/perf/tests/hists_cumulate.c | 2 | ||||
-rw-r--r-- | tools/perf/tests/hists_filter.c | 4 | ||||
-rw-r--r-- | tools/perf/tests/hists_link.c | 4 | ||||
-rw-r--r-- | tools/perf/tests/hists_output.c | 2 | ||||
-rw-r--r-- | tools/perf/tests/keep-tracking.c | 4 | ||||
-rw-r--r-- | tools/perf/tests/parse-events.c | 2 | ||||
-rw-r--r-- | tools/perf/tests/perf-time-to-tsc.c | 2 | ||||
-rw-r--r-- | tools/perf/tests/switch-tracking.c | 8 | ||||
-rw-r--r-- | tools/perf/util/parse-events.c | 100 | ||||
-rw-r--r-- | tools/perf/util/parse-events.h | 19 | ||||
-rw-r--r-- | tools/perf/util/record.c | 4 |
14 files changed, 127 insertions, 32 deletions
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c index f7b8218..3dbd8c5 100644 --- a/tools/perf/builtin-stat.c +++ b/tools/perf/builtin-stat.c @@ -1541,7 +1541,7 @@ static int setup_events(const char * const *attrs, unsigned len) unsigned i; for (i = 0; i < len; i++) { - if (parse_events(evsel_list, attrs[i])) + if (parse_events(evsel_list, attrs[i], NULL)) return -1; } return 0; diff --git a/tools/perf/tests/code-reading.c b/tools/perf/tests/code-reading.c index f671ec3..ca0e480 100644 --- a/tools/perf/tests/code-reading.c +++ b/tools/perf/tests/code-reading.c @@ -482,7 +482,7 @@ static int do_test_code_reading(bool try_kcore) else str = "cycles"; pr_debug("Parsing event '%s'\n", str); - ret = parse_events(evlist, str); + ret = parse_events(evlist, str, NULL); if (ret < 0) { pr_debug("parse_events failed\n"); goto out_err; diff --git a/tools/perf/tests/evsel-roundtrip-name.c b/tools/perf/tests/evsel-roundtrip-name.c index b8d8341..3fa7159 100644 --- a/tools/perf/tests/evsel-roundtrip-name.c +++ b/tools/perf/tests/evsel-roundtrip-name.c @@ -23,7 +23,7 @@ static int perf_evsel__roundtrip_cache_name_test(void) for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) { __perf_evsel__hw_cache_type_op_res_name(type, op, i, name, sizeof(name)); - err = parse_events(evlist, name); + err = parse_events(evlist, name, NULL); if (err) ret = err; } @@ -71,7 +71,7 @@ static int __perf_evsel__name_array_test(const char *names[], int nr_names) return -ENOMEM; for (i = 0; i < nr_names; ++i) { - err = parse_events(evlist, names[i]); + err = parse_events(evlist, names[i], NULL); 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 1861996..b08a95a 100644 --- a/tools/perf/tests/hists_cumulate.c +++ b/tools/perf/tests/hists_cumulate.c @@ -695,7 +695,7 @@ int test__hists_cumulate(void) TEST_ASSERT_VAL("No memory", evlist); - err = parse_events(evlist, "cpu-clock"); + err = parse_events(evlist, "cpu-clock", NULL); if (err) goto out; diff --git a/tools/perf/tests/hists_filter.c b/tools/perf/tests/hists_filter.c index 59e53db..108488c 100644 --- a/tools/perf/tests/hists_filter.c +++ b/tools/perf/tests/hists_filter.c @@ -108,10 +108,10 @@ int test__hists_filter(void) TEST_ASSERT_VAL("No memory", evlist); - err = parse_events(evlist, "cpu-clock"); + err = parse_events(evlist, "cpu-clock", NULL); if (err) goto out; - err = parse_events(evlist, "task-clock"); + err = parse_events(evlist, "task-clock", NULL); if (err) goto out; diff --git a/tools/perf/tests/hists_link.c b/tools/perf/tests/hists_link.c index 278ba834..34c61e4 100644 --- a/tools/perf/tests/hists_link.c +++ b/tools/perf/tests/hists_link.c @@ -282,10 +282,10 @@ int test__hists_link(void) if (evlist == NULL) return -ENOMEM; - err = parse_events(evlist, "cpu-clock"); + err = parse_events(evlist, "cpu-clock", NULL); if (err) goto out; - err = parse_events(evlist, "task-clock"); + err = parse_events(evlist, "task-clock", NULL); if (err) goto out; diff --git a/tools/perf/tests/hists_output.c b/tools/perf/tests/hists_output.c index b52c9fa..d8a23db 100644 --- a/tools/perf/tests/hists_output.c +++ b/tools/perf/tests/hists_output.c @@ -590,7 +590,7 @@ int test__hists_output(void) TEST_ASSERT_VAL("No memory", evlist); - err = parse_events(evlist, "cpu-clock"); + err = parse_events(evlist, "cpu-clock", NULL); if (err) goto out; diff --git a/tools/perf/tests/keep-tracking.c b/tools/perf/tests/keep-tracking.c index 7a5ab7b..5b171d1 100644 --- a/tools/perf/tests/keep-tracking.c +++ b/tools/perf/tests/keep-tracking.c @@ -78,8 +78,8 @@ int test__keep_tracking(void) perf_evlist__set_maps(evlist, cpus, threads); - CHECK__(parse_events(evlist, "dummy:u")); - CHECK__(parse_events(evlist, "cycles:u")); + CHECK__(parse_events(evlist, "dummy:u", NULL)); + CHECK__(parse_events(evlist, "cycles:u", NULL)); perf_evlist__config(evlist, &opts); diff --git a/tools/perf/tests/parse-events.c b/tools/perf/tests/parse-events.c index 3de7449..82d2a16 100644 --- a/tools/perf/tests/parse-events.c +++ b/tools/perf/tests/parse-events.c @@ -1571,7 +1571,7 @@ static int test_event(struct evlist_test *e) if (evlist == NULL) return -ENOMEM; - ret = parse_events(evlist, e->name); + ret = parse_events(evlist, e->name, NULL); if (ret) { pr_debug("failed to parse event '%s', err %d\n", e->name, ret); diff --git a/tools/perf/tests/perf-time-to-tsc.c b/tools/perf/tests/perf-time-to-tsc.c index f238442..5f49484 100644 --- a/tools/perf/tests/perf-time-to-tsc.c +++ b/tools/perf/tests/perf-time-to-tsc.c @@ -68,7 +68,7 @@ int test__perf_time_to_tsc(void) perf_evlist__set_maps(evlist, cpus, threads); - CHECK__(parse_events(evlist, "cycles:u")); + CHECK__(parse_events(evlist, "cycles:u", NULL)); perf_evlist__config(evlist, &opts); diff --git a/tools/perf/tests/switch-tracking.c b/tools/perf/tests/switch-tracking.c index cc68648..0d31403 100644 --- a/tools/perf/tests/switch-tracking.c +++ b/tools/perf/tests/switch-tracking.c @@ -347,7 +347,7 @@ int test__switch_tracking(void) perf_evlist__set_maps(evlist, cpus, threads); /* First event */ - err = parse_events(evlist, "cpu-clock:u"); + err = parse_events(evlist, "cpu-clock:u", NULL); if (err) { pr_debug("Failed to parse event dummy:u\n"); goto out_err; @@ -356,7 +356,7 @@ int test__switch_tracking(void) cpu_clocks_evsel = perf_evlist__last(evlist); /* Second event */ - err = parse_events(evlist, "cycles:u"); + err = parse_events(evlist, "cycles:u", NULL); if (err) { pr_debug("Failed to parse event cycles:u\n"); goto out_err; @@ -371,7 +371,7 @@ int test__switch_tracking(void) goto out; } - err = parse_events(evlist, sched_switch); + err = parse_events(evlist, sched_switch, NULL); if (err) { pr_debug("Failed to parse event %s\n", sched_switch); goto out_err; @@ -401,7 +401,7 @@ int test__switch_tracking(void) perf_evsel__set_sample_bit(cycles_evsel, TIME); /* Fourth event */ - err = parse_events(evlist, "dummy:u"); + err = parse_events(evlist, "dummy:u", NULL); if (err) { pr_debug("Failed to parse event dummy:u\n"); goto out_err; diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c index be06553..6978cc3 100644 --- a/tools/perf/util/parse-events.c +++ b/tools/perf/util/parse-events.c @@ -17,6 +17,7 @@ #include "parse-events-flex.h" #include "pmu.h" #include "thread_map.h" +#include "asm/bug.h" #define MAX_NAME_LEN 100 @@ -1019,11 +1020,13 @@ int parse_events_terms(struct list_head *terms, const char *str) return ret; } -int parse_events(struct perf_evlist *evlist, const char *str) +int parse_events(struct perf_evlist *evlist, const char *str, + struct parse_events_error *err) { struct parse_events_evlist data = { - .list = LIST_HEAD_INIT(data.list), - .idx = evlist->nr_entries, + .list = LIST_HEAD_INIT(data.list), + .idx = evlist->nr_entries, + .error = err, }; int ret; @@ -1044,16 +1047,87 @@ int parse_events(struct perf_evlist *evlist, const char *str) return ret; } +#define MAX_WIDTH 1000 +static int get_term_width(void) +{ + struct winsize ws; + + get_term_dimensions(&ws); + return ws.ws_col > MAX_WIDTH ? MAX_WIDTH : ws.ws_col; +} + +static void parse_events_print_error(struct parse_events_error *err, + const char *event) +{ + const char *str = "invalid or unsupported event: "; + char _buf[MAX_WIDTH]; + char *buf = (char *) event; + int idx = 0; + + if (err->str) { + /* -2 for extra '' in the final fprintf */ + int width = get_term_width() - 2; + int len_event = strlen(event); + int len_str, max_len, cut = 0; + + /* + * Maximum error index indent, we will cut + * the event string if it's bigger. + */ + int max_err_idx = 10; + + /* + * Let's be specific with the message when + * we have the precise error. + */ + str = "event syntax error: "; + len_str = strlen(str); + max_len = width - len_str; + + buf = _buf; + + /* We're cutting from the beggining. */ + if (err->idx > max_err_idx) + cut = err->idx - max_err_idx; + + strncpy(buf, event + cut, max_len); + + /* Mark cut parts with '..' on both sides. */ + if (cut) + buf[0] = buf[1] = '.'; + + if ((len_event - cut) > max_len) { + buf[max_len - 1] = buf[max_len - 2] = '.'; + buf[max_len] = 0; + } + + idx = len_str + err->idx - cut; + } + + fprintf(stderr, "%s'%s'\n", str, buf); + if (idx) { + fprintf(stderr, "%*s\\___ %s\n", idx + 1, "", err->str); + if (err->help) + fprintf(stderr, "\n%s\n", err->help); + free(err->str); + free(err->help); + } + + fprintf(stderr, "Run 'perf list' for a list of valid events\n"); +} + +#undef MAX_WIDTH + int parse_events_option(const struct option *opt, const char *str, int unset __maybe_unused) { struct perf_evlist *evlist = *(struct perf_evlist **)opt->value; - int ret = parse_events(evlist, str); + struct parse_events_error err = { .idx = 0, }; + int ret = parse_events(evlist, str, &err); + + if (ret) + parse_events_print_error(&err, str); - if (ret) { - fprintf(stderr, "invalid or unsupported event: '%s'\n", str); - fprintf(stderr, "Run 'perf list' for a list of valid events\n"); - } return ret; } @@ -1535,3 +1609,13 @@ void parse_events__free_terms(struct list_head *terms) list_for_each_entry_safe(term, h, terms, list) free(term); } + +void parse_events_evlist_error(struct parse_events_evlist *data, + int idx, const char *str) +{ + struct parse_events_error *err = data->error; + + err->idx = idx; + err->str = strdup(str); + WARN_ONCE(!err->str, "WARNING: failed to allocate error string"); +} diff --git a/tools/perf/util/parse-events.h b/tools/perf/util/parse-events.h index 52a2dda..5ac2ffa0 100644 --- a/tools/perf/util/parse-events.h +++ b/tools/perf/util/parse-events.h @@ -12,6 +12,7 @@ struct list_head; struct perf_evsel; struct perf_evlist; +struct parse_events_error; struct option; @@ -29,7 +30,8 @@ const char *event_type(int type); extern int parse_events_option(const struct option *opt, const char *str, int unset); -extern int parse_events(struct perf_evlist *evlist, const char *str); +extern int parse_events(struct perf_evlist *evlist, const char *str, + struct parse_events_error *error); extern int parse_events_terms(struct list_head *terms, const char *str); extern int parse_filter(const struct option *opt, const char *str, int unset); @@ -74,10 +76,17 @@ struct parse_events_term { bool used; }; +struct parse_events_error { + int idx; /* index in the parsed string */ + char *str; /* string to display at the index */ + char *help; /* optional help string */ +}; + struct parse_events_evlist { - struct list_head list; - int idx; - int nr_groups; + struct list_head list; + int idx; + int nr_groups; + struct parse_events_error *error; }; struct parse_events_terms { @@ -114,6 +123,8 @@ void parse_events__set_leader(char *name, struct list_head *list); void parse_events_update_lists(struct list_head *list_event, struct list_head *list_all); void parse_events_error(void *data, void *scanner, char const *msg); +void parse_events_evlist_error(struct parse_events_evlist *data, + int idx, const char *str); void print_events(const char *event_glob, bool name_only); diff --git a/tools/perf/util/record.c b/tools/perf/util/record.c index 0ccfa49..d457c52 100644 --- a/tools/perf/util/record.c +++ b/tools/perf/util/record.c @@ -20,7 +20,7 @@ static int perf_do_probe_api(setup_probe_fn_t fn, int cpu, const char *str) if (!evlist) return -ENOMEM; - if (parse_events(evlist, str)) + if (parse_events(evlist, str, NULL)) goto out_delete; evsel = perf_evlist__first(evlist); @@ -216,7 +216,7 @@ bool perf_evlist__can_select_event(struct perf_evlist *evlist, const char *str) if (!temp_evlist) return false; - err = parse_events(temp_evlist, str); + err = parse_events(temp_evlist, str, NULL); if (err) goto out_delete; |