From 787e4da9f95fd44376b3af6fa163ac0b3a48a1fc Mon Sep 17 00:00:00 2001
From: Jin Yao <yao.jin@linux.intel.com>
Date: Tue, 22 May 2018 19:38:35 +0800
Subject: [PATCH] perf annotate: Show group event string for stdio
When we enable the group, for tui/stdio2, the output first line includes
the group event string. While for stdio, it will show only one event.
For example,
perf record -e cycles,branches ./div
perf annotate --group --stdio
Percent | Source code & Disassembly of div for cycles (44407 samples)
......
The first line doesn't include the event 'branches'.
With this patch, it will show the correct group even string.
perf annotate --group --stdio
Percent | Source code & Disassembly of div for cycles, branches (44407 samples)
......
Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Suggested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1526989115-14435-1-git-send-email-yao.jin@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/util/annotate.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
index 6612c7f90af4..71897689dacf 100644
--- a/tools/perf/util/annotate.c
+++ b/tools/perf/util/annotate.c
@@ -1965,6 +1965,7 @@ int symbol__annotate_printf(struct symbol *sym, struct map *map,
u64 len;
int width = symbol_conf.show_total_period ? 12 : 8;
int graph_dotted_len;
+ char buf[512];
filename = strdup(dso->long_name);
if (!filename)
@@ -1977,8 +1978,11 @@ int symbol__annotate_printf(struct symbol *sym, struct map *map,
len = symbol__size(sym);
- if (perf_evsel__is_group_event(evsel))
+ if (perf_evsel__is_group_event(evsel)) {
width *= evsel->nr_members;
+ perf_evsel__group_desc(evsel, buf, sizeof(buf));
+ evsel_name = buf;
+ }
graph_dotted_len = printf(" %-*.*s| Source code & Disassembly of %s for %s (%" PRIu64 " samples)\n",
width, width, symbol_conf.show_total_period ? "Period" :
--
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