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author | Jiri Olsa <jolsa@kernel.org> | 2018-04-23 12:08:18 +0300 |
---|---|---|
committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2018-04-23 17:17:27 +0300 |
commit | 9a4a931ce847f4aaa12edf11b2e050e18bf45910 (patch) | |
tree | d151e99dead05287e46867b97f10b32c5d0303ef /tools | |
parent | 129193bb0c43d42f1c397c175346e3e0dba5a578 (diff) | |
download | linux-9a4a931ce847f4aaa12edf11b2e050e18bf45910.tar.xz |
perf pmu: Fix pmu events parsing rule
Currently all the event parsing fails end up in the event_pmu rule, and
display misleading help like:
$ perf stat -e inst kill
event syntax error: 'inst'
\___ Cannot find PMU `inst'. Missing kernel support?
...
The reason is that the event_pmu is too strong and match also single
string. Changing it to force the '/' separators to be part of the rule,
and getting the proper error now:
$ perf stat -e inst kill
event syntax error: 'inst'
\___ parser error
Run 'perf list' for a list of valid events
...
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Reported-by: Ingo Molnar <mingo@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20180423090823.32309-5-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
-rw-r--r-- | tools/perf/util/parse-events.y | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/tools/perf/util/parse-events.y b/tools/perf/util/parse-events.y index 7afeb80cc39e..d14464c42714 100644 --- a/tools/perf/util/parse-events.y +++ b/tools/perf/util/parse-events.y @@ -224,15 +224,15 @@ event_def: event_pmu | event_bpf_file event_pmu: -PE_NAME opt_event_config +PE_NAME '/' event_config '/' { struct list_head *list, *orig_terms, *terms; - if (parse_events_copy_term_list($2, &orig_terms)) + if (parse_events_copy_term_list($3, &orig_terms)) YYABORT; ALLOC_LIST(list); - if (parse_events_add_pmu(_parse_state, list, $1, $2, false)) { + if (parse_events_add_pmu(_parse_state, list, $1, $3, false)) { struct perf_pmu *pmu = NULL; int ok = 0; char *pattern; @@ -262,7 +262,7 @@ PE_NAME opt_event_config if (!ok) YYABORT; } - parse_events_terms__delete($2); + parse_events_terms__delete($3); parse_events_terms__delete(orig_terms); $$ = list; } |