Merge tag 'perf-urgent-for-mingo-4.17-20180406' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent

Pull perf/urgent fixes from Arnaldo Carvalho de Melo:

- Show group details on the title line in the annotate browser
  and 'perf annotate --stdio2' output, so that the per-event
  columns can have headers (Arnaldo Carvalho de Melo)

- Fixup vertical line separating metrics from instructions and
  cleaning unused lines at the bottom, both in the annotate TUI
  browser (Arnaldo Carvalho de Melo)

- Remove duplicated 'samples' in lost samples warning in
  'perf report' (Arnaldo Carvalho de Melo)

- Synchronize i915_drm.h, silencing the perf build process,
  automagically adding support for the new DRM_I915_QUERY
  ioctl (Arnaldo Carvalho de Melo)

- Make auxtrace_queues__add_buffer() allocate struct buffer,
  from a patchkit already applied (Adrian Hunter)

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

1 files changed, 5 insertions, 2 deletions

diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
index fffe16af9797..fbad8dfbb186 100644
--- a/tools/perf/util/annotate.c
+++ b/tools/perf/util/annotate.c
@@ -2600,7 +2600,7 @@ int __annotation__scnprintf_samples_period(struct annotation *notes,
 					   bool show_freq)
 {
 	const char *ev_name = perf_evsel__name(evsel);
-	char ref[30] = " show reference callgraph, ";
+	char buf[1024], ref[30] = " show reference callgraph, ";
 	char sample_freq_str[64] = "";
 	unsigned long nr_samples = 0;
 	int nr_members = 1;
@@ -2609,8 +2609,11 @@ int __annotation__scnprintf_samples_period(struct annotation *notes,
 	char unit;
 	int i;
 
-	if (perf_evsel__is_group_event(evsel))
+	if (perf_evsel__is_group_event(evsel)) {
+		perf_evsel__group_desc(evsel, buf, sizeof(buf));
+		ev_name = buf;
                 nr_members = evsel->nr_members;
+	}
 
 	for (i = 0; i < nr_members; i++) {
 		struct sym_hist *ah = annotation__histogram(notes, evsel->idx + i);