Commit 5ca82710 authored by Namhyung Kim's avatar Namhyung Kim Committed by Arnaldo Carvalho de Melo
Browse files

perf hists: Fix children sort key behavior 



When perf report --children resorts output fields, it tries to put
caller above the callee.  But this was only meaningful for a same thread
and doing this requires callchain enabled.  So fix its check before
comparing the callchain depth.

This also changes the hist accumulation tests: In test 3, xmalloc in
bash thread should be above than other perf threads due to alphabetical
order of comm string.  Also it's under page_fault in bash thread since
alphabetical order of dso name.  The sys_perf_event_open in perf thread
is put on the last line since it's self overhead is 0.

In test 4, the sys_perf_event_open is put above other perf entries that
have same children overhead since its callchain depth is smaller.

Signed-off-by: default avatarNamhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1419309381-2593-1-git-send-email-namhyung@kernel.org


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent ed9eb845

tools/perf/tests/hists_cumulate.c

+32 −32
Original line number Diff line number Diff line
@@ -454,12 +454,12 @@ static int test3(struct perf_evsel *evsel, struct machine *machine) 
	 *   30.00%    10.00%     perf  perf           [.] cmd_record

	 *   20.00%     0.00%     bash  libc           [.] malloc

	 *   10.00%    10.00%     bash  [kernel]       [k] page_fault

	 *   10.00%    10.00%     perf  [kernel]       [k] schedule

	 *   10.00%     0.00%     perf  [kernel]       [k] sys_perf_event_open

	 *   10.00%    10.00%     bash  bash           [.] xmalloc

	 *   10.00%    10.00%     perf  [kernel]       [k] page_fault

	 *   10.00%    10.00%     perf  libc           [.] free

	 *   10.00%    10.00%     perf  libc           [.] malloc

	 *   10.00%    10.00%     bash  bash           [.] xmalloc

	 *   10.00%    10.00%     perf  [kernel]       [k] schedule

	 *   10.00%    10.00%     perf  libc           [.] free

	 *   10.00%     0.00%     perf  [kernel]       [k] sys_perf_event_open

	 */

	struct result expected[] = {

		{ 7000, 2000, "perf", "perf",     "main" },
@@ -468,12 +468,12 @@ static int test3(struct perf_evsel *evsel, struct machine *machine) 
		{ 3000, 1000, "perf", "perf",     "cmd_record" },

		{ 2000,    0, "bash", "libc",     "malloc" },

		{ 1000, 1000, "bash", "[kernel]", "page_fault" },

		{ 1000, 1000, "perf", "[kernel]", "schedule" },

		{ 1000,    0, "perf", "[kernel]", "sys_perf_event_open" },

		{ 1000, 1000, "bash", "bash",     "xmalloc" },

		{ 1000, 1000, "perf", "[kernel]", "page_fault" },

		{ 1000, 1000, "perf", "[kernel]", "schedule" },

		{ 1000, 1000, "perf", "libc",     "free" },

		{ 1000, 1000, "perf", "libc",     "malloc" },

		{ 1000, 1000, "bash", "bash",     "xmalloc" },

		{ 1000,    0, "perf", "[kernel]", "sys_perf_event_open" },

	};



	symbol_conf.use_callchain = false;
@@ -537,10 +537,13 @@ static int test4(struct perf_evsel *evsel, struct machine *machine) 
	 *                  malloc

	 *                  main

	 *

	 *   10.00%    10.00%     perf  [kernel]       [k] schedule

	 *   10.00%    10.00%     bash  bash           [.] xmalloc

	 *              |

	 *              --- schedule

	 *                  run_command

	 *              --- xmalloc

	 *                  malloc

	 *                  xmalloc     <--- NOTE: there's a cycle

	 *                  malloc

	 *                  xmalloc

	 *                  main

	 *

	 *   10.00%     0.00%     perf  [kernel]       [k] sys_perf_event_open
@@ -556,6 +559,12 @@ static int test4(struct perf_evsel *evsel, struct machine *machine) 
	 *                  run_command

	 *                  main

	 *

	 *   10.00%    10.00%     perf  [kernel]       [k] schedule

	 *              |

	 *              --- schedule

	 *                  run_command

	 *                  main

	 *

	 *   10.00%    10.00%     perf  libc           [.] free

	 *              |

	 *              --- free
@@ -570,15 +579,6 @@ static int test4(struct perf_evsel *evsel, struct machine *machine) 
	 *                  run_command

	 *                  main

	 *

	 *   10.00%    10.00%     bash  bash           [.] xmalloc

	 *              |

	 *              --- xmalloc

	 *                  malloc

	 *                  xmalloc     <--- NOTE: there's a cycle

	 *                  malloc

	 *                  xmalloc

	 *                  main

	 *

	 */

	struct result expected[] = {

		{ 7000, 2000, "perf", "perf",     "main" },
@@ -587,12 +587,12 @@ static int test4(struct perf_evsel *evsel, struct machine *machine) 
		{ 3000, 1000, "perf", "perf",     "cmd_record" },

		{ 2000,    0, "bash", "libc",     "malloc" },

		{ 1000, 1000, "bash", "[kernel]", "page_fault" },

		{ 1000, 1000, "perf", "[kernel]", "schedule" },

		{ 1000, 1000, "bash", "bash",     "xmalloc" },

		{ 1000,    0, "perf", "[kernel]", "sys_perf_event_open" },

		{ 1000, 1000, "perf", "[kernel]", "page_fault" },

		{ 1000, 1000, "perf", "[kernel]", "schedule" },

		{ 1000, 1000, "perf", "libc",     "free" },

		{ 1000, 1000, "perf", "libc",     "malloc" },

		{ 1000, 1000, "bash", "bash",     "xmalloc" },

	};

	struct callchain_result expected_callchain[] = {

		{
@@ -622,9 +622,12 @@ static int test4(struct perf_evsel *evsel, struct machine *machine) 
				{ "bash",     "main" }, },

		},

		{

			3, {	{ "[kernel]", "schedule" },

				{ "perf",     "run_command" },

				{ "perf",     "main" }, },

			6, {	{ "bash",     "xmalloc" },

				{ "libc",     "malloc" },

				{ "bash",     "xmalloc" },

				{ "libc",     "malloc" },

				{ "bash",     "xmalloc" },

				{ "bash",     "main" }, },

		},

		{

			3, {	{ "[kernel]", "sys_perf_event_open" },
@@ -637,6 +640,11 @@ static int test4(struct perf_evsel *evsel, struct machine *machine) 
				{ "perf",     "run_command" },

				{ "perf",     "main" }, },

		},

		{

			3, {	{ "[kernel]", "schedule" },

				{ "perf",     "run_command" },

				{ "perf",     "main" }, },

		},

		{

			4, {	{ "libc",     "free" },

				{ "perf",     "cmd_record" },
@@ -649,14 +657,6 @@ static int test4(struct perf_evsel *evsel, struct machine *machine) 
				{ "perf",     "run_command" },

				{ "perf",     "main" }, },

		},

		{

			6, {	{ "bash",     "xmalloc" },

				{ "libc",     "malloc" },

				{ "bash",     "xmalloc" },

				{ "libc",     "malloc" },

				{ "bash",     "xmalloc" },

				{ "bash",     "main" }, },

		},

	};



	symbol_conf.use_callchain = true;

tools/perf/ui/hist.c

+3 −0
Original line number Diff line number Diff line
@@ -204,6 +204,9 @@ static int __hpp__sort_acc(struct hist_entry *a, struct hist_entry *b, 
		if (ret)

			return ret;



		if (a->thread != b->thread || !symbol_conf.use_callchain)

			return 0;



		ret = b->callchain->max_depth - a->callchain->max_depth;

	}

	return ret;

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