[PATCH v3 1/4] perf record: Set PERF_RECORD_PERIOD if attr->freq is set.

[Ian Rogers]

From: David Sharp <dhsh...@google.com>

evsel__config() would only set PERF_RECORD_PERIOD if it set attr->freq
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 <dhsh...@google.com>
Signed-off-by: Ian Rogers <irog...@google.com>
---
 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 fd865002cbbd..3e985016da7e 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;
-- 
2.28.0.618.gf4bc123cb7-goog