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authorPeter Zijlstra (Intel) <peterz@infradead.org>2016-06-30 10:29:55 +0200
committerArnaldo Carvalho de Melo <acme@redhat.com>2016-06-30 23:27:42 +0200
commit135cce1bf12bd30d7d66360022f9dac6ea3a07cd (patch)
treedc0c7283290c1a53214c3f66858c00dcbdb7949a /tools
parentperf annotate: Simplify header dotted line sizing (diff)
downloadlinux-135cce1bf12bd30d7d66360022f9dac6ea3a07cd.tar.xz
linux-135cce1bf12bd30d7d66360022f9dac6ea3a07cd.zip
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@infradead.org> Cc: Jiri Olsa <jolsa@kernel.org> Link: http://lkml.kernel.org/r/20160630082955.GA30921@twins.programming.kicks-ass.net [ split from a larger patch ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
-rw-r--r--tools/perf/util/annotate.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
index 78e5d6f3ff61..e9825fe825fd 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);