> On 27-Jul-2020, at 12:29 PM, Ian Rogers wrote:
>
> From: David Sharp
>
> evsel__config() would only set PERF_RECORD_SAMPLE if it set attr->freq
Hi Ian,
Commit message says PERF_RECORD_SAMPLE. But since we are setting period here,
it has to say “PERF_SAMPLE_PERIOD” ?
Thanks
Athira
> from perf record options. When it is set by libpfm events, it would not
> get set. This changes evsel__config to see if attr->freq is set outside of
> whether or not it changes attr->freq itself.
>
> Signed-off-by: David Sharp
> Signed-off-by: Ian Rogers
> ---
> tools/perf/util/evsel.c | 7 ++-
> 1 file changed, 6 insertions(+), 1 deletion(-)
>
> diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
> index ef802f6d40c1..811f538f7d77 100644
> --- a/tools/perf/util/evsel.c
> +++ b/tools/perf/util/evsel.c
> @@ -979,13 +979,18 @@ void evsel__config(struct evsel *evsel, struct
> record_opts *opts,
> if (!attr->sample_period || (opts->user_freq != UINT_MAX ||
>opts->user_interval != ULLONG_MAX)) {
> if (opts->freq) {
> - evsel__set_sample_bit(evsel, PERIOD);
> attr->freq = 1;
> attr->sample_freq = opts->freq;
> } else {
> attr->sample_period = opts->default_interval;
> }
> }
> + /*
> + * If attr->freq was set (here or earlier), ask for period
> + * to be sampled.
> + */
> + if (attr->freq)
> + evsel__set_sample_bit(evsel, PERIOD);
>
> if (opts->no_samples)
> attr->sample_freq = 0;
> --
> 2.28.0.rc0.142.g3c755180ce-goog
>
>
>
