[tip:perf/core] perf test: Switch to new perf_mmap__read_event() interface for "keep tracking" test

[tip-bot for Kan Liang <tipbot@zytor.com>]

Commit-ID:  693d32aebf857ef1d1803b08ef1b631990ae3747
Gitweb:     https://git.kernel.org/tip/693d32aebf857ef1d1803b08ef1b631990ae3747
Author:     Kan Liang <kan.liang@linux.intel.com>
AuthorDate: Thu, 1 Mar 2018 18:09:03 -0500
Committer:  Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Mon, 5 Mar 2018 10:49:01 -0300

perf test: Switch to new perf_mmap__read_event() interface for "keep tracking" test

The perf test 'keep tracking' still use the legacy interface.

No functional change.

Committer testing:

  # perf test tracking
  25: Use a dummy software event to keep tracking           : 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/1519945751-37786-6-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/keep-tracking.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/tools/perf/tests/keep-tracking.c b/tools/perf/tests/keep-tracking.c
index c46530918938..4590d8fb91ab 100644
--- a/tools/perf/tests/keep-tracking.c
+++ b/tools/perf/tests/keep-tracking.c
@@ -27,18 +27,24 @@
 static int find_comm(struct perf_evlist *evlist, const char *comm)
 {
 	union perf_event *event;
+	struct perf_mmap *md;
+	u64 end, start;
 	int i, found;
 
 	found = 0;
 	for (i = 0; i < evlist->nr_mmaps; i++) {
-		while ((event = perf_evlist__mmap_read(evlist, i)) != NULL) {
+		md = &evlist->mmap[i];
+		if (perf_mmap__read_init(md, false, &start, &end) < 0)
+			continue;
+		while ((event = perf_mmap__read_event(md, false, &start, end)) != NULL) {
 			if (event->header.type == PERF_RECORD_COMM &&
 			    (pid_t)event->comm.pid == getpid() &&
 			    (pid_t)event->comm.tid == getpid() &&
 			    strcmp(event->comm.comm, comm) == 0)
 				found += 1;
-			perf_evlist__mmap_consume(evlist, i);
+			perf_mmap__consume(md, false);
 		}
+		perf_mmap__read_done(md);
 	}
 	return found;
 }