From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965335AbcLTTY0 (ORCPT ); Tue, 20 Dec 2016 14:24:26 -0500 Received: from terminus.zytor.com ([198.137.202.10]:35526 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965234AbcLTTYV (ORCPT ); Tue, 20 Dec 2016 14:24:21 -0500 Date: Tue, 20 Dec 2016 11:24:06 -0800 From: tip-bot for Jiri Olsa Message-ID: Cc: a.p.zijlstra@chello.nl, dsahern@gmail.com, tglx@linutronix.de, acme@redhat.com, linux-kernel@vger.kernel.org, namhyung@kernel.org, jolsa@kernel.org, hpa@zytor.com, mingo@kernel.org Reply-To: jolsa@kernel.org, hpa@zytor.com, mingo@kernel.org, namhyung@kernel.org, acme@redhat.com, linux-kernel@vger.kernel.org, a.p.zijlstra@chello.nl, tglx@linutronix.de, dsahern@gmail.com In-Reply-To: <1481538943-21874-4-git-send-email-jolsa@kernel.org> References: <1481538943-21874-4-git-send-email-jolsa@kernel.org> To: linux-tip-commits@vger.kernel.org Subject: [tip:perf/urgent] perf thread_map: Add thread_map__remove function Git-Commit-ID: 38af91f01de0e160c17ae380acb5bab5d51066f4 X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: 38af91f01de0e160c17ae380acb5bab5d51066f4 Gitweb: http://git.kernel.org/tip/38af91f01de0e160c17ae380acb5bab5d51066f4 Author: Jiri Olsa AuthorDate: Mon, 12 Dec 2016 11:35:41 +0100 Committer: Arnaldo Carvalho de Melo CommitDate: Thu, 15 Dec 2016 16:25:45 -0300 perf thread_map: Add thread_map__remove function Add thread_map__remove function to remove thread from thread map. Add automated test also. Committer notes: Testing it: # perf test "Remove thread map" 39: Remove thread map : Ok # perf test -v "Remove thread map" 39: Remove thread map : --- start --- test child forked, pid 4483 2 threads: 4482, 4483 1 thread: 4483 0 thread: test child finished with 0 ---- end ---- Remove thread map: Ok # Signed-off-by: Jiri Olsa Tested-by: Arnaldo Carvalho de Melo Cc: David Ahern Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1481538943-21874-4-git-send-email-jolsa@kernel.org [ Added stdlib.h, to get the free() declaration ] Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/tests/builtin-test.c | 4 ++++ tools/perf/tests/tests.h | 1 + tools/perf/tests/thread-map.c | 44 +++++++++++++++++++++++++++++++++++++++++ tools/perf/util/thread_map.c | 22 +++++++++++++++++++++ tools/perf/util/thread_map.h | 1 + 5 files changed, 72 insertions(+) diff --git a/tools/perf/tests/builtin-test.c b/tools/perf/tests/builtin-test.c index 2360520..a77dcc0 100644 --- a/tools/perf/tests/builtin-test.c +++ b/tools/perf/tests/builtin-test.c @@ -186,6 +186,10 @@ static struct test generic_tests[] = { .func = test__thread_map_synthesize, }, { + .desc = "Remove thread map", + .func = test__thread_map_remove, + }, + { .desc = "Synthesize cpu map", .func = test__cpu_map_synthesize, }, diff --git a/tools/perf/tests/tests.h b/tools/perf/tests/tests.h index 0d7b251..a512f0c 100644 --- a/tools/perf/tests/tests.h +++ b/tools/perf/tests/tests.h @@ -80,6 +80,7 @@ const char *test__bpf_subtest_get_desc(int subtest); int test__bpf_subtest_get_nr(void); int test_session_topology(int subtest); int test__thread_map_synthesize(int subtest); +int test__thread_map_remove(int subtest); int test__cpu_map_synthesize(int subtest); int test__synthesize_stat_config(int subtest); int test__synthesize_stat(int subtest); diff --git a/tools/perf/tests/thread-map.c b/tools/perf/tests/thread-map.c index cee2a2c..a4a4b46 100644 --- a/tools/perf/tests/thread-map.c +++ b/tools/perf/tests/thread-map.c @@ -1,3 +1,4 @@ +#include #include #include #include @@ -93,3 +94,46 @@ int test__thread_map_synthesize(int subtest __maybe_unused) return 0; } + +int test__thread_map_remove(int subtest __maybe_unused) +{ + struct thread_map *threads; + char *str; + int i; + + TEST_ASSERT_VAL("failed to allocate map string", + asprintf(&str, "%d,%d", getpid(), getppid()) >= 0); + + threads = thread_map__new_str(str, NULL, 0); + + TEST_ASSERT_VAL("failed to allocate thread_map", + threads); + + if (verbose) + thread_map__fprintf(threads, stderr); + + TEST_ASSERT_VAL("failed to remove thread", + !thread_map__remove(threads, 0)); + + TEST_ASSERT_VAL("thread_map count != 1", threads->nr == 1); + + if (verbose) + thread_map__fprintf(threads, stderr); + + TEST_ASSERT_VAL("failed to remove thread", + !thread_map__remove(threads, 0)); + + TEST_ASSERT_VAL("thread_map count != 0", threads->nr == 0); + + if (verbose) + thread_map__fprintf(threads, stderr); + + TEST_ASSERT_VAL("failed to not remove thread", + thread_map__remove(threads, 0)); + + for (i = 0; i < threads->nr; i++) + free(threads->map[i].comm); + + free(threads); + return 0; +} diff --git a/tools/perf/util/thread_map.c b/tools/perf/util/thread_map.c index 40585f5..f9eab20 100644 --- a/tools/perf/util/thread_map.c +++ b/tools/perf/util/thread_map.c @@ -448,3 +448,25 @@ bool thread_map__has(struct thread_map *threads, pid_t pid) return false; } + +int thread_map__remove(struct thread_map *threads, int idx) +{ + int i; + + if (threads->nr < 1) + return -EINVAL; + + if (idx >= threads->nr) + return -EINVAL; + + /* + * Free the 'idx' item and shift the rest up. + */ + free(threads->map[idx].comm); + + for (i = idx; i < threads->nr - 1; i++) + threads->map[i] = threads->map[i + 1]; + + threads->nr--; + return 0; +} diff --git a/tools/perf/util/thread_map.h b/tools/perf/util/thread_map.h index bd3b971..ea0ef08 100644 --- a/tools/perf/util/thread_map.h +++ b/tools/perf/util/thread_map.h @@ -58,4 +58,5 @@ static inline char *thread_map__comm(struct thread_map *map, int thread) void thread_map__read_comms(struct thread_map *threads); bool thread_map__has(struct thread_map *threads, pid_t pid); +int thread_map__remove(struct thread_map *threads, int idx); #endif /* __PERF_THREAD_MAP_H */