diff options
author | Namhyung Kim <namhyung@kernel.org> | 2015-11-09 14:45:41 +0900 |
---|---|---|
committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2015-11-19 13:19:23 -0300 |
commit | f2af008695e0b54a58b76caecd52af7e6c97fb29 (patch) | |
tree | c6b9614583fb22f4a5100730d259915f00e320de /tools/perf/ui/stdio | |
parent | 5e47f8ff406296bd078716d71283796ca5c6544b (diff) | |
download | linux-f2af008695e0b54a58b76caecd52af7e6c97fb29.tar.bz2 |
perf report: Add callchain value option
Now -g/--call-graph option supports how to display callchain values.
Possible values are 'percent', 'period' and 'count'. The percent is
same as before and it's the default behavior. The period displays the
raw period value rather than the percentage. The count displays the
number of occurrences.
$ perf report --no-children --stdio -g percent
...
39.93% swapper [kernel.vmlinux] [k] intel_idel
|
---intel_idle
cpuidle_enter_state
cpuidle_enter
call_cpuidle
cpu_startup_entry
|
|--28.63%-- start_secondary
|
--11.30%-- rest_init
$ perf report --no-children --show-total-period --stdio -g period
...
39.93% 13018705 swapper [kernel.vmlinux] [k] intel_idel
|
---intel_idle
cpuidle_enter_state
cpuidle_enter
call_cpuidle
cpu_startup_entry
|
|--9334403-- start_secondary
|
--3684302-- rest_init
$ perf report --no-children --show-nr-samples --stdio -g count
...
39.93% 80 swapper [kernel.vmlinux] [k] intel_idel
|
---intel_idle
cpuidle_enter_state
cpuidle_enter
call_cpuidle
cpu_startup_entry
|
|--57-- start_secondary
|
--23-- rest_init
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1447047946-1691-6-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/ui/stdio')
-rw-r--r-- | tools/perf/ui/stdio/hist.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/tools/perf/ui/stdio/hist.c b/tools/perf/ui/stdio/hist.c index f4de055cab9b..7ebc661be267 100644 --- a/tools/perf/ui/stdio/hist.c +++ b/tools/perf/ui/stdio/hist.c @@ -81,13 +81,14 @@ static size_t __callchain__fprintf_graph(FILE *fp, struct rb_root *root, int depth_mask, int left_margin) { struct rb_node *node, *next; - struct callchain_node *child; + struct callchain_node *child = NULL; struct callchain_list *chain; int new_depth_mask = depth_mask; u64 remaining; size_t ret = 0; int i; uint entries_printed = 0; + int cumul_count = 0; remaining = total_samples; @@ -99,6 +100,7 @@ static size_t __callchain__fprintf_graph(FILE *fp, struct rb_root *root, child = rb_entry(node, struct callchain_node, rb_node); cumul = callchain_cumul_hits(child); remaining -= cumul; + cumul_count += callchain_cumul_counts(child); /* * The depth mask manages the output of pipes that show @@ -148,6 +150,12 @@ static size_t __callchain__fprintf_graph(FILE *fp, struct rb_root *root, if (!rem_sq_bracket) return ret; + if (callchain_param.value == CCVAL_COUNT && child && child->parent) { + rem_node.count = child->parent->children_count - cumul_count; + if (rem_node.count <= 0) + return ret; + } + new_depth_mask &= ~(1 << (depth - 1)); ret += ipchain__fprintf_graph(fp, &rem_node, &rem_hits, depth, new_depth_mask, 0, total_samples, |