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author | Jiri Olsa <jolsa@kernel.org> | 2017-02-17 15:00:56 +0100 |
---|---|---|
committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2017-02-17 21:28:22 +0100 |
commit | 99e7138eb7897aa0ccc6661173ae2d7e79721e05 (patch) | |
tree | 6d603e00226f5a25356c0315827701ea6bc96ff8 /tools/perf/util/pmu.c | |
parent | perf tools: Move new_term arguments into struct parse_events_term template (diff) | |
download | linux-99e7138eb7897aa0ccc6661173ae2d7e79721e05.tar.xz linux-99e7138eb7897aa0ccc6661173ae2d7e79721e05.zip |
perf tools: Fail on using multiple bits long terms without value
Currently we allow not to specify value for numeric terms and we set
them to value 1. This was originaly meant just for single bit terms to
allow user to type:
$ perf record -e 'cpu/cpu-cycles,any'
instead of:
$ perf record -e 'cpu/cpu-cycles,any=1'
However it works also for multi bits terms like:
$ perf record -e 'cpu/event/' ls
...
$ perf evlist -v
..., config: 0x1, ...
After discussion with Peter we decided making such term usage to fail,
like:
$ perf record -e 'cpu/event/' ls
event syntax error: 'cpu/event/'
\___ no value assigned for term
...
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1487340058-10496-4-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/pmu.c')
-rw-r--r-- | tools/perf/util/pmu.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c index 49bfee0e3d9e..63cb46cb9b0f 100644 --- a/tools/perf/util/pmu.c +++ b/tools/perf/util/pmu.c @@ -834,9 +834,18 @@ static int pmu_config_term(struct list_head *formats, * Either directly use a numeric term, or try to translate string terms * using event parameters. */ - if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM) + if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM) { + if (term->no_value && + bitmap_weight(format->bits, PERF_PMU_FORMAT_BITS) > 1) { + if (err) { + err->idx = term->err_val; + err->str = strdup("no value assigned for term"); + } + return -EINVAL; + } + val = term->val.num; - else if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR) { + } else if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR) { if (strcmp(term->val.str, "?")) { if (verbose) { pr_info("Invalid sysfs entry %s=%s\n", |