[PATCH 27/28] perf test: Switch to new perf_mmap__read_event() interface for task-exit

Arnaldo Carvalho de Melo
2018-03-05T14:31:26Z

From: Kan Liang <kan.liang@linux.intel.com>

The perf test 'task-exit' still use the legacy interface.

No functional change.

Committer notes:

Testing it:

# perf test exit
21: Number of exit events of a simple workload : Ok
#

Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1519945751-37786-13-git-send-email-kan.liang@linux.intel.com
[ Changed bool parameters from 0 to 'false', as per Jiri comment ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/tests/task-exit.c | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/tools/perf/tests/task-exit.c b/tools/perf/tests/task-exit.c
index 01b62b81751b..02b0888b72a3 100644
--- a/tools/perf/tests/task-exit.c
+++ b/tools/perf/tests/task-exit.c
@@ -47,6 +47,8 @@ int test__task_exit(struct test *test __maybe_unused, int subtest __maybe_unused
char sbuf[STRERR_BUFSIZE];
struct cpu_map *cpus;
struct thread_map *threads;
+ struct perf_mmap *md;
+ u64 end, start;

signal(SIGCHLD, sig_handler);

@@ -110,13 +112,19 @@ int test__task_exit(struct test *test __maybe_unused, int subtest __maybe_unused
perf_evlist__start_workload(evlist);

retry:
- while ((event = perf_evlist__mmap_read(evlist, 0)) != NULL) {
+ md = &evlist->mmap[0];
+ if (perf_mmap__read_init(md, false, &start, &end) < 0)
+ goto out_init;
+
+ while ((event = perf_mmap__read_event(md, false, &start, end)) != NULL) {
if (event->header.type == PERF_RECORD_EXIT)
nr_exit++;

- perf_evlist__mmap_consume(evlist, 0);
+ perf_mmap__consume(md, false);
}
+ perf_mmap__read_done(md);

+out_init:
if (!exited || !nr_exit) {
perf_evlist__poll(evlist, -1);
goto retry;
--
2.14.3