mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-10-06 16:49:22 +00:00
Code Issues Releases Wiki Activity

libperf: Add perf_evlist test

Browse source 
Add 2 simple perf_evlist tests to test counters reading interface
through the struct evlist object.

Committer testing:

  # make -C tools/perf/lib tests
  make: Entering directory '/home/acme/git/perf/tools/perf/lib'
    LINK     test-cpumap-a
    LINK     test-threadmap-a
    LINK     test-evlist-a
    LINK     test-cpumap-so
    LINK     test-threadmap-so
    LINK     test-evlist-so
  running static:
  - running test-cpumap.c...OK
  - running test-threadmap.c...OK
  - running test-evlist.c...OK
  running dynamic:
  - running test-cpumap.c...OK
  - running test-threadmap.c...OK
  - running test-evlist.c...OK
  make: Leaving directory '/home/acme/git/perf/tools/perf/lib'
  #

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexey Budankov <alexey.budankov@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20190721112506.12306-76-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa 2019-07-21 13:25:02 +02:00 committed by Arnaldo Carvalho de Melo
parent 43d6976365
commit 8ded5425fa
2 changed files with 124 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
tools/perf/lib/tests/Makefile
View file

@ -1,6 +1,6 @@
# SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause)
TESTS = test-cpumap test-threadmap
TESTS = test-cpumap test-threadmap test-evlist
TESTS_SO := $(addsuffix -so,$(TESTS))
TESTS_A := $(addsuffix -a,$(TESTS))

123
tools/perf/lib/tests/test-evlist.c Normal file
View file

@ -0,0 +1,123 @@
// SPDX-License-Identifier: GPL-2.0
#include <linux/perf_event.h>
#include <perf/cpumap.h>
#include <perf/threadmap.h>
#include <perf/evlist.h>
#include <perf/evsel.h>
#include <internal/tests.h>
static int test_stat_cpu(void)
{
struct perf_cpu_map *cpus;
struct perf_evlist *evlist;
struct perf_evsel *evsel;
struct perf_event_attr attr1 = {
.type = PERF_TYPE_SOFTWARE,
.config = PERF_COUNT_SW_CPU_CLOCK,
};
struct perf_event_attr attr2 = {
.type = PERF_TYPE_SOFTWARE,
.config = PERF_COUNT_SW_TASK_CLOCK,
};
int err, cpu, tmp;
cpus = perf_cpu_map__new(NULL);
__T("failed to create cpus", cpus);
evlist = perf_evlist__new();
__T("failed to create evlist", evlist);
evsel = perf_evsel__new(&attr1);
__T("failed to create evsel1", evsel);
perf_evlist__add(evlist, evsel);
evsel = perf_evsel__new(&attr2);
__T("failed to create evsel2", evsel);
perf_evlist__add(evlist, evsel);
perf_evlist__set_maps(evlist, cpus, NULL);
err = perf_evlist__open(evlist);
__T("failed to open evsel", err == 0);
perf_evlist__for_each_evsel(evlist, evsel) {
cpus = perf_evsel__cpus(evsel);
perf_cpu_map__for_each_cpu(cpu, tmp, cpus) {
struct perf_counts_values counts = { .val = 0 };
perf_evsel__read(evsel, cpu, 0, &counts);
__T("failed to read value for evsel", counts.val != 0);
}
}
perf_evlist__close(evlist);
perf_evlist__delete(evlist);
perf_cpu_map__put(cpus);
return 0;
}
static int test_stat_thread(void)
{
struct perf_counts_values counts = { .val = 0 };
struct perf_thread_map *threads;
struct perf_evlist *evlist;
struct perf_evsel *evsel;
struct perf_event_attr attr1 = {
.type = PERF_TYPE_SOFTWARE,
.config = PERF_COUNT_SW_CPU_CLOCK,
};
struct perf_event_attr attr2 = {
.type = PERF_TYPE_SOFTWARE,
.config = PERF_COUNT_SW_TASK_CLOCK,
};
int err;
threads = perf_thread_map__new_dummy();
__T("failed to create threads", threads);
perf_thread_map__set_pid(threads, 0, 0);
evlist = perf_evlist__new();
__T("failed to create evlist", evlist);
evsel = perf_evsel__new(&attr1);
__T("failed to create evsel1", evsel);
perf_evlist__add(evlist, evsel);
evsel = perf_evsel__new(&attr2);
__T("failed to create evsel2", evsel);
perf_evlist__add(evlist, evsel);
perf_evlist__set_maps(evlist, NULL, threads);
err = perf_evlist__open(evlist);
__T("failed to open evsel", err == 0);
perf_evlist__for_each_evsel(evlist, evsel) {
perf_evsel__read(evsel, 0, 0, &counts);
__T("failed to read value for evsel", counts.val != 0);
}
perf_evlist__close(evlist);
perf_evlist__delete(evlist);
perf_thread_map__put(threads);
return 0;
}
int main(int argc, char **argv)
{
__T_START;
test_stat_cpu();
test_stat_thread();
__T_OK;
return 0;
}