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perf parse-events: Additional error reporting

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When no events or PMUs match report an error for event_pmu:

Before:
```
$ perf stat -e 'asdfasdf' -a sleep 1
Run 'perf list' for a list of valid events

 Usage: perf stat [<options>] [<command>]

    -e, --event <event>   event selector. use 'perf list' to list available events
```

After:
```
$ perf stat -e 'asdfasdf' -a sleep 1
event syntax error: 'asdfasdf'
                     \___ Bad event name

Unabled to find PMU or event on a PMU of 'asdfasdf'
Run 'perf list' for a list of valid events

 Usage: perf stat [<options>] [<command>]

    -e, --event <event>   event selector. use 'perf list' to list available events
```

Fixes the inadvertent removal when hybrid parsing was modified.

Fixes: 70c90e4a6b2fbe77 ("perf parse-events: Avoid scanning PMUs before parsing")
Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.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: bpf@vger.kernel.org
Link: https://lore.kernel.org/r/20230627181030.95608-11-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Ian Rogers 2023-06-27 11:10:27 -07:00 committed by Arnaldo Carvalho de Melo
parent b52cb995f1
commit b30d4f0b69
1 changed files with 19 additions and 6 deletions
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25
tools/perf/util/parse-events.y
View File

@ -291,7 +291,6 @@ PE_NAME opt_pmu_config
{
struct parse_events_state *parse_state = _parse_state;
struct list_head *list = NULL, *orig_terms = NULL, *terms= NULL;
struct parse_events_error *error = parse_state->error;
char *pattern = NULL;
#define CLEANUP \
@ -303,9 +302,6 @@ PE_NAME opt_pmu_config
free(pattern); \
} while(0)
if (error)
error->idx = @1.first_column;
if (parse_events_copy_term_list($2, &orig_terms)) {
CLEANUP;
YYNOMEM;
@ -360,6 +356,14 @@ PE_NAME opt_pmu_config
$2 = NULL;
}
if (!ok) {
struct parse_events_error *error = parse_state->error;
char *help;
if (asprintf(&help, "Unabled to find PMU or event on a PMU of '%s'", $1) < 0)
help = NULL;
parse_events_error__handle(error, @1.first_column,
strdup("Bad event or PMU"),
help);
CLEANUP;
YYABORT;
}
@ -376,9 +380,18 @@ PE_NAME sep_dc
int err;
err = parse_events_multi_pmu_add(_parse_state, $1, NULL, &list);
free($1);
if (err < 0)
if (err < 0) {
struct parse_events_state *parse_state = _parse_state;
struct parse_events_error *error = parse_state->error;
char *help;
if (asprintf(&help, "Unabled to find PMU or event on a PMU of '%s'", $1) < 0)
help = NULL;
parse_events_error__handle(error, @1.first_column, strdup("Bad event name"), help);
free($1);
PE_ABORT(err);
}
free($1);
$$ = list;
}