diff options
author | Ingo Molnar <mingo@kernel.org> | 2015-08-20 11:48:56 +0200 |
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committer | Ingo Molnar <mingo@kernel.org> | 2015-08-20 11:48:56 +0200 |
commit | 40a2ea1bd988e3bbdb07a0708681fdb05cd7d267 (patch) | |
tree | 05806aaa27a4b0516a14a8ccf703c1501500e588 /tools | |
parent | a897b5f0393a8a05d230c9248dc5324fb30720a0 (diff) | |
parent | 196676497f2507966f99abef63bede6a8550f8b3 (diff) | |
download | linux-40a2ea1bd988e3bbdb07a0708681fdb05cd7d267.tar.bz2 |
Merge branch 'perf/urgent' into perf/core, to pick up fixes before adding more changes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'tools')
-rw-r--r-- | tools/perf/builtin-record.c | 11 | ||||
-rw-r--r-- | tools/perf/builtin-top.c | 4 | ||||
-rw-r--r-- | tools/perf/util/machine.c | 20 | ||||
-rw-r--r-- | tools/perf/util/thread.c | 6 | ||||
-rw-r--r-- | tools/testing/selftests/futex/functional/futex_requeue_pi_signal_restart.c | 2 |
5 files changed, 38 insertions, 5 deletions
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index 25cf6b404e8a..a660022f2c92 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -521,6 +521,15 @@ static int __cmd_record(struct record *rec, int argc, const char **argv) goto out_child; } + /* + * Normally perf_session__new would do this, but it doesn't have the + * evlist. + */ + if (rec->tool.ordered_events && !perf_evlist__sample_id_all(rec->evlist)) { + pr_warning("WARNING: No sample_id_all support, falling back to unordered processing\n"); + rec->tool.ordered_events = false; + } + if (!rec->evlist->nr_groups) perf_header__clear_feat(&session->header, HEADER_GROUP_DESC); @@ -970,9 +979,11 @@ static struct record record = { .tool = { .sample = process_sample_event, .fork = perf_event__process_fork, + .exit = perf_event__process_exit, .comm = perf_event__process_comm, .mmap = perf_event__process_mmap, .mmap2 = perf_event__process_mmap2, + .ordered_events = true, }, }; diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index bfe24f1e362f..8c465c83aabf 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -602,8 +602,8 @@ static void display_sig(int sig __maybe_unused) static void display_setup_sig(void) { - signal(SIGSEGV, display_sig); - signal(SIGFPE, display_sig); + signal(SIGSEGV, sighandler_dump_stack); + signal(SIGFPE, sighandler_dump_stack); signal(SIGINT, display_sig); signal(SIGQUIT, display_sig); signal(SIGTERM, display_sig); diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c index be3e00891d22..6309f7ceb08f 100644 --- a/tools/perf/util/machine.c +++ b/tools/perf/util/machine.c @@ -1395,6 +1395,24 @@ int machine__process_fork_event(struct machine *machine, union perf_event *event event->fork.ptid); int err = 0; + if (dump_trace) + perf_event__fprintf_task(event, stdout); + + /* + * There may be an existing thread that is not actually the parent, + * either because we are processing events out of order, or because the + * (fork) event that would have removed the thread was lost. Assume the + * latter case and continue on as best we can. + */ + if (parent->pid_ != (pid_t)event->fork.ppid) { + dump_printf("removing erroneous parent thread %d/%d\n", + parent->pid_, parent->tid); + machine__remove_thread(machine, parent); + thread__put(parent); + parent = machine__findnew_thread(machine, event->fork.ppid, + event->fork.ptid); + } + /* if a thread currently exists for the thread id remove it */ if (thread != NULL) { machine__remove_thread(machine, thread); @@ -1403,8 +1421,6 @@ int machine__process_fork_event(struct machine *machine, union perf_event *event thread = machine__findnew_thread(machine, event->fork.pid, event->fork.tid); - if (dump_trace) - perf_event__fprintf_task(event, stdout); if (thread == NULL || parent == NULL || thread__fork(thread, parent, sample->time) < 0) { diff --git a/tools/perf/util/thread.c b/tools/perf/util/thread.c index 28c4b746baa1..0a9ae8014729 100644 --- a/tools/perf/util/thread.c +++ b/tools/perf/util/thread.c @@ -191,6 +191,12 @@ static int thread__clone_map_groups(struct thread *thread, if (thread->pid_ == parent->pid_) return 0; + if (thread->mg == parent->mg) { + pr_debug("broken map groups on thread %d/%d parent %d/%d\n", + thread->pid_, thread->tid, parent->pid_, parent->tid); + return 0; + } + /* But this one is new process, copy maps. */ for (i = 0; i < MAP__NR_TYPES; ++i) if (map_groups__clone(thread->mg, parent->mg, i) < 0) diff --git a/tools/testing/selftests/futex/functional/futex_requeue_pi_signal_restart.c b/tools/testing/selftests/futex/functional/futex_requeue_pi_signal_restart.c index 7f0c756993af..3d7dc6afc3f8 100644 --- a/tools/testing/selftests/futex/functional/futex_requeue_pi_signal_restart.c +++ b/tools/testing/selftests/futex/functional/futex_requeue_pi_signal_restart.c @@ -191,7 +191,7 @@ int main(int argc, char *argv[]) if (res > 0) { atomic_set(&requeued, 1); break; - } else if (res > 0) { + } else if (res < 0) { error("FUTEX_CMP_REQUEUE_PI failed\n", errno); ret = RET_ERROR; break; |