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authorJiri Olsa <jolsa@kernel.org>2015-06-26 12:29:10 +0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2015-06-26 17:19:19 +0300
commita8e02324dfe6bcafc15d02b790f33321ec4facb0 (patch)
tree74fc921aab20fe15559b3a0bb82095cee80aa9b9 /tools/perf
parent1ac77e1ce8654ec94ada0c508d58ba80a4647fba (diff)
downloadlinux-a8e02324dfe6bcafc15d02b790f33321ec4facb0.tar.xz
perf stat: Use xyarray for cpu evsel counts
Switching single dimensional array of 'struct perf_counts_values' with xyarray object, so we could store thread dimension counts. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1435310967-14570-6-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf')
-rw-r--r--tools/perf/builtin-stat.c2
-rw-r--r--tools/perf/tests/openat-syscall.c2
-rw-r--r--tools/perf/util/stat.c31
-rw-r--r--tools/perf/util/stat.h7
4 files changed, 28 insertions, 14 deletions
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index 49b90374232c..055ce83dd6f2 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -218,7 +218,7 @@ static void perf_stat__reset_stats(struct perf_evlist *evlist)
evlist__for_each(evlist, evsel) {
perf_evsel__reset_stat_priv(evsel);
- perf_evsel__reset_counts(evsel, perf_evsel__nr_cpus(evsel));
+ perf_evsel__reset_counts(evsel);
}
perf_stat__reset_shadow_stats();
diff --git a/tools/perf/tests/openat-syscall.c b/tools/perf/tests/openat-syscall.c
index e86fc477a74f..bd882f09ebbc 100644
--- a/tools/perf/tests/openat-syscall.c
+++ b/tools/perf/tests/openat-syscall.c
@@ -46,7 +46,7 @@ int test__openat_syscall_event(void)
if (perf_counts(evsel->counts, 0)->val != nr_openat_calls) {
pr_debug("perf_evsel__read_on_cpu: expected to intercept %d calls, got %" PRIu64 "\n",
- nr_openat_calls, evsel->counts->cpu[0].val);
+ nr_openat_calls, perf_counts(evsel->counts, 0)->val);
goto out_close_fd;
}
diff --git a/tools/perf/util/stat.c b/tools/perf/util/stat.c
index 4014b709f956..453480aa7650 100644
--- a/tools/perf/util/stat.c
+++ b/tools/perf/util/stat.c
@@ -97,26 +97,39 @@ void perf_stat_evsel_id_init(struct perf_evsel *evsel)
struct perf_counts *perf_counts__new(int ncpus)
{
- int size = sizeof(struct perf_counts) +
- ncpus * sizeof(struct perf_counts_values);
+ struct perf_counts *counts = zalloc(sizeof(*counts));
- return zalloc(size);
+ if (counts) {
+ struct xyarray *cpu;
+
+ cpu = xyarray__new(ncpus, 1, sizeof(struct perf_counts_values));
+ if (!cpu) {
+ free(counts);
+ return NULL;
+ }
+
+ counts->cpu = cpu;
+ }
+
+ return counts;
}
void perf_counts__delete(struct perf_counts *counts)
{
- free(counts);
+ if (counts) {
+ xyarray__delete(counts->cpu);
+ free(counts);
+ }
}
-static void perf_counts__reset(struct perf_counts *counts, int ncpus)
+static void perf_counts__reset(struct perf_counts *counts)
{
- memset(counts, 0, (sizeof(*counts) +
- (ncpus * sizeof(struct perf_counts_values))));
+ xyarray__reset(counts->cpu);
}
-void perf_evsel__reset_counts(struct perf_evsel *evsel, int ncpus)
+void perf_evsel__reset_counts(struct perf_evsel *evsel)
{
- perf_counts__reset(evsel->counts, ncpus);
+ perf_counts__reset(evsel->counts);
}
int perf_evsel__alloc_counts(struct perf_evsel *evsel, int ncpus)
diff --git a/tools/perf/util/stat.h b/tools/perf/util/stat.h
index 5e43348836a6..6d07612545e0 100644
--- a/tools/perf/util/stat.h
+++ b/tools/perf/util/stat.h
@@ -3,6 +3,7 @@
#include <linux/types.h>
#include <stdio.h>
+#include "xyarray.h"
struct stats
{
@@ -45,13 +46,13 @@ struct perf_counts_values {
struct perf_counts {
s8 scaled;
struct perf_counts_values aggr;
- struct perf_counts_values cpu[];
+ struct xyarray *cpu;
};
static inline struct perf_counts_values*
perf_counts(struct perf_counts *counts, int cpu)
{
- return &counts->cpu[cpu];
+ return xyarray__entry(counts->cpu, cpu, 0);
}
void update_stats(struct stats *stats, u64 val);
@@ -88,7 +89,7 @@ void perf_stat__print_shadow_stats(FILE *out, struct perf_evsel *evsel,
struct perf_counts *perf_counts__new(int ncpus);
void perf_counts__delete(struct perf_counts *counts);
-void perf_evsel__reset_counts(struct perf_evsel *evsel, int ncpus);
+void perf_evsel__reset_counts(struct perf_evsel *evsel);
int perf_evsel__alloc_counts(struct perf_evsel *evsel, int ncpus);
void perf_evsel__free_counts(struct perf_evsel *evsel);
#endif