Merge tag 'perf-urgent-for-mingo-4.17-20180514' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent

Pull perf/urgent fixes from Arnaldo Carvalho de Melo:

- Fix segfault when processing unknown threads in cs-etm (Leo Yan)

- Fix "perf test inet_pton" on s390 failing due to missing inline (Thomas Richter)

- Display all available events on 'perf annotate --stdio' (Jin Yao)

- Add missing newline when parsing empty BPF proggie (Arnaldo Carvalho de Melo)

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>

4 files changed, 29 insertions, 6 deletions

diff --git a/tools/perf/tests/shell/record+probe_libc_inet_pton.sh b/tools/perf/tests/shell/record+probe_libc_inet_pton.sh
index 016882dbbc16..ee86473643be 100755
--- a/tools/perf/tests/shell/record+probe_libc_inet_pton.sh
+++ b/tools/perf/tests/shell/record+probe_libc_inet_pton.sh
@@ -16,7 +16,7 @@ nm -g $libc 2>/dev/null | fgrep -q inet_pton || exit 254
 trace_libc_inet_pton_backtrace() {
         idx=0
         expected[0]="ping[][0-9 \.:]+probe_libc:inet_pton: \([[:xdigit:]]+\)"
-        expected[1]=".*inet_pton[[:space:]]\($libc\)$"
+        expected[1]=".*inet_pton[[:space:]]\($libc|inlined\)$"
         case "$(uname -m)" in
         s390x)
                 eventattr='call-graph=dwarf,max-stack=4'
diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
index 536ee148bff8..5d74a30fe00f 100644
--- a/tools/perf/util/annotate.c
+++ b/tools/perf/util/annotate.c
@@ -1263,6 +1263,9 @@ annotation_line__print(struct annotation_line *al, struct symbol *sym, u64 start
                                 max_percent = sample->percent;
                 }
 
+                if (al->samples_nr > nr_percent)
+                        nr_percent = al->samples_nr;
+
                 if (max_percent < min_pcnt)
                         return -1;
 
diff --git a/tools/perf/util/cs-etm.c b/tools/perf/util/cs-etm.c
index 40020b1ca54f..bf16dc9ee507 100644
--- a/tools/perf/util/cs-etm.c
+++ b/tools/perf/util/cs-etm.c
@@ -239,6 +239,7 @@ static void cs_etm__free(struct perf_session *session)
         for (i = 0; i < aux->num_cpu; i++)
                 zfree(&aux->metadata[i]);
 
+        thread__zput(aux->unknown_thread);
         zfree(&aux->metadata);
         zfree(&aux);
 }
@@ -612,8 +613,8 @@ cs_etm__get_trace(struct cs_etm_buffer *buff, struct cs_etm_queue *etmq)
         return buff->len;
 }
 
-static void  cs_etm__set_pid_tid_cpu(struct cs_etm_auxtrace *etm,
-                                     struct auxtrace_queue *queue)
+static void cs_etm__set_pid_tid_cpu(struct cs_etm_auxtrace *etm,
+                                    struct auxtrace_queue *queue)
 {
         struct cs_etm_queue *etmq = queue->priv;
 
@@ -1357,6 +1358,23 @@ int cs_etm__process_auxtrace_info(union perf_event *event,
         etm->auxtrace.free = cs_etm__free;
         session->auxtrace = &etm->auxtrace;
 
+        etm->unknown_thread = thread__new(999999999, 999999999);
+        if (!etm->unknown_thread)
+                goto err_free_queues;
+
+        /*
+         * Initialize list node so that at thread__zput() we can avoid
+         * segmentation fault at list_del_init().
+         */
+        INIT_LIST_HEAD(&etm->unknown_thread->node);
+
+        err = thread__set_comm(etm->unknown_thread, "unknown", 0);
+        if (err)
+                goto err_delete_thread;
+
+        if (thread__init_map_groups(etm->unknown_thread, etm->machine))
+                goto err_delete_thread;
+
         if (dump_trace) {
                 cs_etm__print_auxtrace_info(auxtrace_info->priv, num_cpu);
                 return 0;
@@ -1371,16 +1389,18 @@ int cs_etm__process_auxtrace_info(union perf_event *event,
 
         err = cs_etm__synth_events(etm, session);
         if (err)
-                goto err_free_queues;
+                goto err_delete_thread;
 
         err = auxtrace_queues__process_index(&etm->queues, session);
         if (err)
-                goto err_free_queues;
+                goto err_delete_thread;
 
         etm->data_queued = etm->queues.populated;
 
         return 0;
 
+err_delete_thread:
+        thread__zput(etm->unknown_thread);
 err_free_queues:
         auxtrace_queues__free(&etm->queues);
         session->auxtrace = NULL;
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index 2fb0272146d8..b8b8a9558d32 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -1715,7 +1715,7 @@ int parse_events(struct perf_evlist *evlist, const char *str,
                 struct perf_evsel *last;
 
                 if (list_empty(&parse_state.list)) {
-                        WARN_ONCE(true, "WARNING: event parser found nothing");
+                        WARN_ONCE(true, "WARNING: event parser found nothing\n");
                         return -1;
                 }