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perf counts: Reset prev_raw_counts counts 

When we want to reset the evsel->prev_raw_counts, zeroing the aggr is
not enough, we need to reset the perf_counts too.

The perf_counts__reset zeros the perf_counts, and it should zero the
aggr too. This patch changes perf_counts__reset to non-static, and calls
it in evsel__reset_prev_raw_counts to reset the prev_raw_counts.

Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Reviewed-by: Jiri Olsa <jolsa@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jin Yao <yao.jin@intel.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20200520042737.24160-3-yao.jin@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jin Yao 2020-05-20 12:27:34 +08:00 committed by Arnaldo Carvalho de Melo
parent 72f02a947e
commit cf4d9bd67c
3 changed files with 6 additions and 6 deletions
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4
tools/perf/util/counts.c
View File

@ -1,6 +1,7 @@
// SPDX-License-Identifier: GPL-2.0
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include "evsel.h"
#include "counts.h"
#include <linux/zalloc.h>
@ -42,10 +43,11 @@ void perf_counts__delete(struct perf_counts *counts)
}
}
static void perf_counts__reset(struct perf_counts *counts)
void perf_counts__reset(struct perf_counts *counts)
{
xyarray__reset(counts->loaded);
xyarray__reset(counts->values);
memset(&counts->aggr, 0, sizeof(struct perf_counts_values));
}
void evsel__reset_counts(struct evsel *evsel)

1
tools/perf/util/counts.h
View File

@ -37,6 +37,7 @@ perf_counts__set_loaded(struct perf_counts *counts, int cpu, int thread, bool lo
struct perf_counts *perf_counts__new(int ncpus, int nthreads);
void perf_counts__delete(struct perf_counts *counts);
void perf_counts__reset(struct perf_counts *counts);
void evsel__reset_counts(struct evsel *evsel);
int evsel__alloc_counts(struct evsel *evsel, int ncpus, int nthreads);

7
tools/perf/util/stat.c
View File

@ -163,11 +163,8 @@ static void evsel__free_prev_raw_counts(struct evsel *evsel)
static void evsel__reset_prev_raw_counts(struct evsel *evsel)
{
if (evsel->prev_raw_counts) {
evsel->prev_raw_counts->aggr.val = 0;
evsel->prev_raw_counts->aggr.ena = 0;
evsel->prev_raw_counts->aggr.run = 0;
}
if (evsel->prev_raw_counts)
perf_counts__reset(evsel->prev_raw_counts);
}
static int evsel__alloc_stats(struct evsel *evsel, bool alloc_raw)