Commit-ID: 135cce1bf12bd30d7d66360022f9dac6ea3a07cd
Gitweb: http://git.kernel.org/tip/135cce1bf12bd30d7d66360022f9dac6ea3a07cd
Author: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
AuthorDate: Thu, 30 Jun 2016 10:29:55 +0200
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Thu, 30 Jun 2016 18:27:42 -0300
perf annotate: Add number of samples to the header
Staring at annotations of large functions is useless if there's only a
few samples in them. Report the number of samples in the header to make
this easier to determine.
Committer note:
The change amounts to:
- Percent | Source code & Disassembly of perf-vdso.so for cycles:u
------------------------------------------------------------------
+ Percent | Source code & Disassembly of perf-vdso.so for cycles:u (3278 samples)
+--------------------------------------------------------------------------------
Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Link: http://lkml.kernel.org/r/20160630082955.GA30921@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
[ split from a larger patch ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/perf/util/annotate.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
index 78e5d6f..e9825fe 100644
--- a/tools/perf/util/annotate.c
+++ b/tools/perf/util/annotate.c
@@ -1522,6 +1522,7 @@ int symbol__annotate_printf(struct symbol *sym, struct map *map,
const char *d_filename;
const char *evsel_name = perf_evsel__name(evsel);
struct annotation *notes = symbol__annotation(sym);
+ struct sym_hist *h = annotation__histogram(notes, evsel->idx);
struct disasm_line *pos, *queue = NULL;
u64 start = map__rip_2objdump(map, sym->start);
int printed = 2, queue_len = 0;
@@ -1544,8 +1545,8 @@ int symbol__annotate_printf(struct symbol *sym, struct map *map,
if (perf_evsel__is_group_event(evsel))
width *= evsel->nr_members;
- graph_dotted_len = printf(" %-*.*s| Source code & Disassembly of %s for %s\n",
- width, width, "Percent", d_filename, evsel_name);
+ graph_dotted_len = printf(" %-*.*s| Source code & Disassembly of %s for %s (%" PRIu64 " samples)\n",
+ width, width, "Percent", d_filename, evsel_name, h->sum);
printf("%-*.*s----\n",
graph_dotted_len, graph_dotted_len, graph_dotted_line);
--
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