This field will be used by commands which print
counter deltas on regular timer intervals,
such as perf stat -T.
Signed-off-by: Stephane Eranian <eran...@google.com>
---
tools/perf/util/evsel.c | 21 +++++++++++++++++++++
tools/perf/util/evsel.h | 1 +
2 files changed, 22 insertions(+)
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index 1b16dd1..132da7c 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -646,6 +646,17 @@ int __perf_evsel__read_on_cpu(struct perf_evsel *evsel,
if (readn(FD(evsel, cpu, thread), &count, nv * sizeof(u64)) < 0)
return -errno;
+ if (evsel->prev_raw_counts) {
+ struct perf_counts_values tmp;
+
+ tmp = evsel->prev_raw_counts->cpu[cpu];
+ evsel->prev_raw_counts->cpu[cpu] = count;
+
+ count.val = count.val - tmp.val;
+ count.ena = count.ena - tmp.ena;
+ count.run = count.run - tmp.run;
+ }
+
if (scale) {
if (count.run == 0)
count.val = 0;
@@ -684,6 +695,16 @@ int __perf_evsel__read(struct perf_evsel *evsel,
}
}
+ if (evsel->prev_raw_counts) {
+ struct perf_counts_values tmp = evsel->prev_raw_counts->aggr;
+
+ evsel->prev_raw_counts->aggr = *aggr;
+
+ aggr->val = aggr->val - tmp.val;
+ aggr->ena = aggr->ena - tmp.ena;
+ aggr->run = aggr->run - tmp.run;
+ }
+
evsel->counts->scaled = 0;
if (scale) {
if (aggr->run == 0) {
diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h
index 3d2b801..63ea570 100644
--- a/tools/perf/util/evsel.h
+++ b/tools/perf/util/evsel.h
@@ -53,6 +53,7 @@ struct perf_evsel {
struct xyarray *sample_id;
u64 *id;
struct perf_counts *counts;
+ struct perf_counts *prev_raw_counts;
int idx;
u32 ids;
struct hists hists;
--
1.7.9.5
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
