diff options
| -rw-r--r-- | tools/perf/util/evsel.c | 16 | ||||
| -rw-r--r-- | tools/perf/util/evsel.h | 7 |
2 files changed, 23 insertions, 0 deletions
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index 6dc7a67..2d26b7a 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -917,6 +917,22 @@ void perf_counts_values__scale(struct perf_counts_values *count, *pscaled = scaled; } +int perf_evsel__read_cb(struct perf_evsel *evsel, int cpu, int thread, + perf_evsel__read_cb_t cb) +{ + struct perf_counts_values count; + + memset(&count, 0, sizeof(count)); + + if (FD(evsel, cpu, thread) < 0) + return -EINVAL; + + if (readn(FD(evsel, cpu, thread), &count, sizeof(count)) < 0) + return -errno; + + return cb(evsel, cpu, thread, &count); +} + int __perf_evsel__read_on_cpu(struct perf_evsel *evsel, int cpu, int thread, bool scale) { diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h index 7af0377..5c93bed 100644 --- a/tools/perf/util/evsel.h +++ b/tools/perf/util/evsel.h @@ -233,6 +233,13 @@ static inline bool perf_evsel__match2(struct perf_evsel *e1, (a)->attr.type == (b)->attr.type && \ (a)->attr.config == (b)->attr.config) +typedef int (perf_evsel__read_cb_t)(struct perf_evsel *evsel, + int cpu, int thread, + struct perf_counts_values *count); + +int perf_evsel__read_cb(struct perf_evsel *evsel, int cpu, int thread, + perf_evsel__read_cb_t cb); + int __perf_evsel__read_on_cpu(struct perf_evsel *evsel, int cpu, int thread, bool scale); |
