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* [PATCH v4 1/3] perf report: Change sort order by a specified event in group
@ 2019-12-18  2:24 Jin Yao
  2019-12-18  2:24 ` [PATCH v4 2/3] perf report: Support a new key to reload the browser Jin Yao
                   ` (2 more replies)
  0 siblings, 3 replies; 7+ messages in thread
From: Jin Yao @ 2019-12-18  2:24 UTC (permalink / raw)
  To: acme, jolsa, peterz, mingo, alexander.shishkin
  Cc: Linux-kernel, ak, kan.liang, yao.jin, Jin Yao

When performing "perf report --group", it shows the event group information
together. By default, the output is sorted by the first event in group.

It would be nice for user to select any event for sorting. This patch
introduces a new option "--group-sort-idx" to sort the output by the
event at the index n in event group.

For example,

Before:

  # perf report --group --stdio

  # To display the perf.data header info, please use --header/--header-only options.
  #
  #
  # Total Lost Samples: 0
  #
  # Samples: 12K of events 'cpu/instructions,period=2000003/, cpu/cpu-cycles,period=200003/, BR_MISP_RETIRED.ALL_BRANCHES:pp, cpu/event=0xc0,umask=1,cmask=1,
  # Event count (approx.): 6451235635
  #
  #                         Overhead  Command    Shared Object            Symbol
  # ................................  .........  .......................  ...................................
  #
      92.19%  98.68%   0.00%  93.30%  mgen       mgen                     [.] LOOP1
       3.12%   0.29%   0.00%   0.16%  gsd-color  libglib-2.0.so.0.5600.4  [.] 0x0000000000049515
       1.56%   0.03%   0.00%   0.04%  gsd-color  libglib-2.0.so.0.5600.4  [.] 0x00000000000494b7
       1.56%   0.01%   0.00%   0.00%  gsd-color  libglib-2.0.so.0.5600.4  [.] 0x00000000000494ce
       1.56%   0.00%   0.00%   0.00%  mgen       [kernel.kallsyms]        [k] task_tick_fair
       0.00%   0.15%   0.00%   0.04%  perf       [kernel.kallsyms]        [k] smp_call_function_single
       0.00%   0.13%   0.00%   6.08%  swapper    [kernel.kallsyms]        [k] intel_idle
       0.00%   0.03%   0.00%   0.00%  gsd-color  libglib-2.0.so.0.5600.4  [.] g_main_context_check
       0.00%   0.03%   0.00%   0.00%  swapper    [kernel.kallsyms]        [k] apic_timer_interrupt
       ...

After:

  # perf report --group --stdio --group-sort-idx 3

  # To display the perf.data header info, please use --header/--header-only options.
  #
  #
  # Total Lost Samples: 0
  #
  # Samples: 12K of events 'cpu/instructions,period=2000003/, cpu/cpu-cycles,period=200003/, BR_MISP_RETIRED.ALL_BRANCHES:pp, cpu/event=0xc0,umask=1,cmask=1,
  # Event count (approx.): 6451235635
  #
  #                         Overhead  Command    Shared Object            Symbol
  # ................................  .........  .......................  ...................................
  #
      92.19%  98.68%   0.00%  93.30%  mgen       mgen                     [.] LOOP1
       0.00%   0.13%   0.00%   6.08%  swapper    [kernel.kallsyms]        [k] intel_idle
       3.12%   0.29%   0.00%   0.16%  gsd-color  libglib-2.0.so.0.5600.4  [.] 0x0000000000049515
       0.00%   0.00%   0.00%   0.06%  swapper    [kernel.kallsyms]        [k] hrtimer_start_range_ns
       1.56%   0.03%   0.00%   0.04%  gsd-color  libglib-2.0.so.0.5600.4  [.] 0x00000000000494b7
       0.00%   0.15%   0.00%   0.04%  perf       [kernel.kallsyms]        [k] smp_call_function_single
       0.00%   0.00%   0.00%   0.02%  mgen       [kernel.kallsyms]        [k] update_curr
       0.00%   0.00%   0.00%   0.02%  mgen       [kernel.kallsyms]        [k] apic_timer_interrupt
       0.00%   0.00%   0.00%   0.02%  mgen       [kernel.kallsyms]        [k] native_apic_msr_eoi_write
       0.00%   0.00%   0.00%   0.02%  mgen       [kernel.kallsyms]        [k] __update_load_avg_se
       0.00%   0.00%   0.00%   0.02%  mgen       [kernel.kallsyms]        [k] scheduler_tick

Now the output is sorted by the fourth event in group.

 v4:
 ---
 1. Update Documentation/perf-report.txt to mention
    '--group-sort-idx' support multiple groups with different
    amount of events and it should be used on grouped events.

 2. Update __hpp__group_sort_idx(), just return when the
    idx is out of limit.

 3. Return failure on symbol_conf.group_sort_idx && !session->evlist->nr_groups.
    So now we don't need to use together with --group.

 v3:
 ---
 Refine the code in __hpp__group_sort_idx().

 Before:
   for (i = 1; i < nr_members; i++) {
        if (i == idx) {
                ret = field_cmp(fields_a[i], fields_b[i]);
                if (ret)
                        goto out;
        }
   }

 After:
   if (idx >= 1 && idx < nr_members) {
        ret = field_cmp(fields_a[idx], fields_b[idx]);
        if (ret)
                goto out;
   }

 v2:
 ---
 No change

Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
---
 tools/perf/Documentation/perf-report.txt |   5 ++
 tools/perf/builtin-report.c              |  10 +++
 tools/perf/ui/hist.c                     | 104 +++++++++++++++++++----
 tools/perf/util/symbol_conf.h            |   1 +
 4 files changed, 105 insertions(+), 15 deletions(-)

diff --git a/tools/perf/Documentation/perf-report.txt b/tools/perf/Documentation/perf-report.txt
index 8dbe2119686a..fbb715bcb512 100644
--- a/tools/perf/Documentation/perf-report.txt
+++ b/tools/perf/Documentation/perf-report.txt
@@ -371,6 +371,11 @@ OPTIONS
 	Show event group information together. It forces group output also
 	if there are no groups defined in data file.
 
+--group-sort-idx::
+	Sort the output by the event at the index n in group. If n is invalid,
+	sort by the first event. It can support multiple groups with different
+	amount of events. WARNING: This should be used on grouped events.
+
 --demangle::
 	Demangle symbol names to human readable form. It's enabled by default,
 	disable with --no-demangle.
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 387311c67264..664e2e94d97d 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -1210,6 +1210,10 @@ int cmd_report(int argc, const char **argv)
 		    "Show a column with the sum of periods"),
 	OPT_BOOLEAN_SET(0, "group", &symbol_conf.event_group, &report.group_set,
 		    "Show event group information together"),
+	OPT_INTEGER(0, "group-sort-idx", &symbol_conf.group_sort_idx,
+		    "Sort the output by the event at the index n in group. "
+		    "If n is invalid, sort by the first event. "
+		    "WARNING: should be used on grouped events."),
 	OPT_CALLBACK_NOOPT('b', "branch-stack", &branch_mode, "",
 		    "use branch records for per branch histogram filling",
 		    parse_branch_mode),
@@ -1349,6 +1353,12 @@ int cmd_report(int argc, const char **argv)
 
 	setup_forced_leader(&report, session->evlist);
 
+	if (symbol_conf.group_sort_idx && !session->evlist->nr_groups) {
+		parse_options_usage(NULL, options, "group-sort-idx", 0);
+		ret = -EINVAL;
+		goto error;
+	}
+
 	if (itrace_synth_opts.last_branch)
 		has_br_stack = true;
 
diff --git a/tools/perf/ui/hist.c b/tools/perf/ui/hist.c
index f73675500061..35224b366305 100644
--- a/tools/perf/ui/hist.c
+++ b/tools/perf/ui/hist.c
@@ -151,15 +151,100 @@ static int field_cmp(u64 field_a, u64 field_b)
 	return 0;
 }
 
+static int pair_fields_alloc(struct hist_entry *a, struct hist_entry *b,
+			     hpp_field_fn get_field, int nr_members,
+			     u64 **fields_a, u64 **fields_b)
+{
+	struct evsel *evsel;
+	struct hist_entry *pair;
+	u64 *fa, *fb;
+	int ret = -1;
+
+	fa = calloc(nr_members, sizeof(*fa));
+	fb = calloc(nr_members, sizeof(*fb));
+
+	if (!fa || !fb)
+		goto out;
+
+	list_for_each_entry(pair, &a->pairs.head, pairs.node) {
+		evsel = hists_to_evsel(pair->hists);
+		fa[perf_evsel__group_idx(evsel)] = get_field(pair);
+	}
+
+	list_for_each_entry(pair, &b->pairs.head, pairs.node) {
+		evsel = hists_to_evsel(pair->hists);
+		fb[perf_evsel__group_idx(evsel)] = get_field(pair);
+	}
+
+	*fields_a = fa;
+	*fields_b = fb;
+	ret = 0;
+
+out:
+	if (ret != 0) {
+		free(fa);
+		free(fb);
+		*fields_a = NULL;
+		*fields_b = NULL;
+	}
+
+	return ret;
+}
+
+static int __hpp__group_sort_idx(struct hist_entry *a, struct hist_entry *b,
+				 hpp_field_fn get_field, int idx)
+{
+	struct evsel *evsel = hists_to_evsel(a->hists);
+	u64 *fields_a, *fields_b;
+	int cmp, nr_members, ret, i;
+
+	cmp = field_cmp(get_field(a), get_field(b));
+	if (!perf_evsel__is_group_event(evsel))
+		return cmp;
+
+	nr_members = evsel->core.nr_members;
+	if (idx < 1 || idx >= nr_members)
+		return cmp;
+
+	ret = pair_fields_alloc(a, b, get_field, nr_members,
+				&fields_a, &fields_b);
+	if (ret) {
+		ret = cmp;
+		goto out;
+	}
+
+	ret = field_cmp(fields_a[idx], fields_b[idx]);
+	if (ret)
+		goto out;
+
+	for (i = 1; i < nr_members; i++) {
+		if (i != idx) {
+			ret = field_cmp(fields_a[i], fields_b[i]);
+			if (ret)
+				goto out;
+		}
+	}
+
+out:
+	free(fields_a);
+	free(fields_b);
+
+	return ret;
+}
+
 static int __hpp__sort(struct hist_entry *a, struct hist_entry *b,
 		       hpp_field_fn get_field)
 {
 	s64 ret;
 	int i, nr_members;
 	struct evsel *evsel;
-	struct hist_entry *pair;
 	u64 *fields_a, *fields_b;
 
+	if (symbol_conf.group_sort_idx && symbol_conf.event_group) {
+		return __hpp__group_sort_idx(a, b, get_field,
+					     symbol_conf.group_sort_idx);
+	}
+
 	ret = field_cmp(get_field(a), get_field(b));
 	if (ret || !symbol_conf.event_group)
 		return ret;
@@ -169,22 +254,11 @@ static int __hpp__sort(struct hist_entry *a, struct hist_entry *b,
 		return ret;
 
 	nr_members = evsel->core.nr_members;
-	fields_a = calloc(nr_members, sizeof(*fields_a));
-	fields_b = calloc(nr_members, sizeof(*fields_b));
-
-	if (!fields_a || !fields_b)
+	i = pair_fields_alloc(a, b, get_field, nr_members,
+			      &fields_a, &fields_b);
+	if (i)
 		goto out;
 
-	list_for_each_entry(pair, &a->pairs.head, pairs.node) {
-		evsel = hists_to_evsel(pair->hists);
-		fields_a[perf_evsel__group_idx(evsel)] = get_field(pair);
-	}
-
-	list_for_each_entry(pair, &b->pairs.head, pairs.node) {
-		evsel = hists_to_evsel(pair->hists);
-		fields_b[perf_evsel__group_idx(evsel)] = get_field(pair);
-	}
-
 	for (i = 1; i < nr_members; i++) {
 		ret = field_cmp(fields_a[i], fields_b[i]);
 		if (ret)
diff --git a/tools/perf/util/symbol_conf.h b/tools/perf/util/symbol_conf.h
index 10f1ec3e0349..b916afb95ec5 100644
--- a/tools/perf/util/symbol_conf.h
+++ b/tools/perf/util/symbol_conf.h
@@ -73,6 +73,7 @@ struct symbol_conf {
 	const char	*symfs;
 	int		res_sample;
 	int		pad_output_len_dso;
+	int		group_sort_idx;
 };
 
 extern struct symbol_conf symbol_conf;
-- 
2.17.1


^ permalink raw reply related	[flat|nested] 7+ messages in thread

* [PATCH v4 2/3] perf report: Support a new key to reload the browser
  2019-12-18  2:24 [PATCH v4 1/3] perf report: Change sort order by a specified event in group Jin Yao
@ 2019-12-18  2:24 ` Jin Yao
  2019-12-18  2:24 ` [PATCH v4 3/3] perf report: support hotkey to let user select any event for sorting Jin Yao
  2019-12-18  7:43 ` [PATCH v4 1/3] perf report: Change sort order by a specified event in group Jiri Olsa
  2 siblings, 0 replies; 7+ messages in thread
From: Jin Yao @ 2019-12-18  2:24 UTC (permalink / raw)
  To: acme, jolsa, peterz, mingo, alexander.shishkin
  Cc: Linux-kernel, ak, kan.liang, yao.jin, Jin Yao

Sometimes we may need to reload the browser to update the output since
some options are changed.

This patch creates a new key K_RELOAD. Once the __cmd_report() returns
K_RELOAD, it would repeat the whole process, such as, read samples from
data file, sort the data and display in the browser.

 v4:
 ---
 Need to quit in perf_evsel_menu__run if key is K_RELOAD.

 v3:
 ---
 No change.

 v2:
 ---
 This is a new patch created in v2.

Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
---
 tools/perf/builtin-report.c    | 4 ++--
 tools/perf/ui/browsers/hists.c | 1 +
 tools/perf/ui/keysyms.h        | 1 +
 3 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 664e2e94d97d..defd734ca31c 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -635,7 +635,7 @@ static int report__browse_hists(struct report *rep)
 		 * Usually "ret" is the last pressed key, and we only
 		 * care if the key notifies us to switch data file.
 		 */
-		if (ret != K_SWITCH_INPUT_DATA)
+		if (ret != K_SWITCH_INPUT_DATA && ret != K_RELOAD)
 			ret = 0;
 		break;
 	case 2:
@@ -1538,7 +1538,7 @@ int cmd_report(int argc, const char **argv)
 	sort__setup_elide(stdout);
 
 	ret = __cmd_report(&report);
-	if (ret == K_SWITCH_INPUT_DATA) {
+	if (ret == K_SWITCH_INPUT_DATA || ret == K_RELOAD) {
 		perf_session__delete(session);
 		goto repeat;
 	} else
diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c
index d4d3558fdef4..096b3bc0fbef 100644
--- a/tools/perf/ui/browsers/hists.c
+++ b/tools/perf/ui/browsers/hists.c
@@ -3335,6 +3335,7 @@ static int perf_evsel_menu__run(struct evsel_menu *menu,
 					pos = perf_evsel__prev(pos);
 				goto browse_hists;
 			case K_SWITCH_INPUT_DATA:
+			case K_RELOAD:
 			case 'q':
 			case CTRL('c'):
 				goto out;
diff --git a/tools/perf/ui/keysyms.h b/tools/perf/ui/keysyms.h
index fbfac29077f2..04cc4e5c031f 100644
--- a/tools/perf/ui/keysyms.h
+++ b/tools/perf/ui/keysyms.h
@@ -25,5 +25,6 @@
 #define K_ERROR	 -2
 #define K_RESIZE -3
 #define K_SWITCH_INPUT_DATA -4
+#define K_RELOAD -5
 
 #endif /* _PERF_KEYSYMS_H_ */
-- 
2.17.1


^ permalink raw reply related	[flat|nested] 7+ messages in thread

* [PATCH v4 3/3] perf report: support hotkey to let user select any event for sorting
  2019-12-18  2:24 [PATCH v4 1/3] perf report: Change sort order by a specified event in group Jin Yao
  2019-12-18  2:24 ` [PATCH v4 2/3] perf report: Support a new key to reload the browser Jin Yao
@ 2019-12-18  2:24 ` Jin Yao
  2019-12-18  7:47   ` Jiri Olsa
  2019-12-18  7:43 ` [PATCH v4 1/3] perf report: Change sort order by a specified event in group Jiri Olsa
  2 siblings, 1 reply; 7+ messages in thread
From: Jin Yao @ 2019-12-18  2:24 UTC (permalink / raw)
  To: acme, jolsa, peterz, mingo, alexander.shishkin
  Cc: Linux-kernel, ak, kan.liang, yao.jin, Jin Yao

When performing "perf report --group", it shows the event group information
together. In previous patch, we have supported a new option "--group-sort-idx"
to sort the output by the event at the index n in event group.

It would be nice if we can use a hotkey in browser to select a event
to sort.

For example,

  # perf report --group

 Samples: 12K of events 'cpu/instructions,period=2000003/, cpu/cpu-cycles,period=200003/, ...
                        Overhead  Command    Shared Object            Symbol
  92.19%  98.68%   0.00%  93.30%  mgen       mgen                     [.] LOOP1
   3.12%   0.29%   0.00%   0.16%  gsd-color  libglib-2.0.so.0.5600.4  [.] 0x0000000000049515
   1.56%   0.03%   0.00%   0.04%  gsd-color  libglib-2.0.so.0.5600.4  [.] 0x00000000000494b7
   1.56%   0.01%   0.00%   0.00%  gsd-color  libglib-2.0.so.0.5600.4  [.] 0x00000000000494ce
   1.56%   0.00%   0.00%   0.00%  mgen       [kernel.kallsyms]        [k] task_tick_fair
   0.00%   0.15%   0.00%   0.04%  perf       [kernel.kallsyms]        [k] smp_call_function_single
   0.00%   0.13%   0.00%   6.08%  swapper    [kernel.kallsyms]        [k] intel_idle
   0.00%   0.03%   0.00%   0.00%  gsd-color  libglib-2.0.so.0.5600.4  [.] g_main_context_check
   0.00%   0.03%   0.00%   0.00%  swapper    [kernel.kallsyms]        [k] apic_timer_interrupt
   0.00%   0.03%   0.00%   0.00%  swapper    [kernel.kallsyms]        [k] check_preempt_curr

When user press hotkey '3' (event index, starting from 0), it indicates
to sort output by the forth event in group.

  Samples: 12K of events 'cpu/instructions,period=2000003/, cpu/cpu-cycles,period=200003/, ...
                        Overhead  Command    Shared Object            Symbol
  92.19%  98.68%   0.00%  93.30%  mgen       mgen                     [.] LOOP1
   0.00%   0.13%   0.00%   6.08%  swapper    [kernel.kallsyms]        [k] intel_idle
   3.12%   0.29%   0.00%   0.16%  gsd-color  libglib-2.0.so.0.5600.4  [.] 0x0000000000049515
   0.00%   0.00%   0.00%   0.06%  swapper    [kernel.kallsyms]        [k] hrtimer_start_range_ns
   1.56%   0.03%   0.00%   0.04%  gsd-color  libglib-2.0.so.0.5600.4  [.] 0x00000000000494b7
   0.00%   0.15%   0.00%   0.04%  perf       [kernel.kallsyms]        [k] smp_call_function_single
   0.00%   0.00%   0.00%   0.02%  mgen       [kernel.kallsyms]        [k] update_curr
   0.00%   0.00%   0.00%   0.02%  mgen       [kernel.kallsyms]        [k] apic_timer_interrupt
   0.00%   0.00%   0.00%   0.02%  mgen       [kernel.kallsyms]        [k] native_apic_msr_eoi_write
   0.00%   0.00%   0.00%   0.02%  mgen       [kernel.kallsyms]        [k] __update_load_avg_se

 v4:
 ---
 No change

 v3:
 ---
 No change

 v2:
 ---
 1. Report warning at helpline when index is invalid.
 2. Report warning at helpline when it's not group event.
 3. Use "case '0' ... '9'" to refine the code
 4. Split K_RELOAD implementation to another patch.

Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
---
 tools/perf/ui/browsers/hists.c | 25 ++++++++++++++++++++++++-
 1 file changed, 24 insertions(+), 1 deletion(-)

diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c
index 096b3bc0fbef..22e76bd1a2d9 100644
--- a/tools/perf/ui/browsers/hists.c
+++ b/tools/perf/ui/browsers/hists.c
@@ -2876,7 +2876,8 @@ static int perf_evsel__hists_browse(struct evsel *evsel, int nr_events,
 	"s             Switch to another data file in PWD\n"
 	"t             Zoom into current Thread\n"
 	"V             Verbose (DSO names in callchains, etc)\n"
-	"/             Filter symbol by name";
+	"/             Filter symbol by name\n"
+	"0-9           Sort by event n in group";
 	static const char top_help[] = HIST_BROWSER_HELP_COMMON
 	"P             Print histograms to perf.hist.N\n"
 	"t             Zoom into current Thread\n"
@@ -2937,6 +2938,28 @@ static int perf_evsel__hists_browse(struct evsel *evsel, int nr_events,
 			 * go to the next or previous
 			 */
 			goto out_free_stack;
+		case '0' ... '9':
+			if (!symbol_conf.event_group ||
+			    evsel->core.nr_members < 2) {
+				snprintf(buf, sizeof(buf),
+					 "Sort by index only available with group events!");
+				helpline = buf;
+				continue;
+			}
+
+			symbol_conf.group_sort_idx = key - '0';
+
+			if (symbol_conf.group_sort_idx >= evsel->core.nr_members) {
+				snprintf(buf, sizeof(buf),
+					 "Max event group index to sort is %d (index from 0 to %d)",
+					 evsel->core.nr_members - 1,
+					 evsel->core.nr_members - 1);
+				helpline = buf;
+				continue;
+			}
+
+			key = K_RELOAD;
+			goto out_free_stack;
 		case 'a':
 			if (!hists__has(hists, sym)) {
 				ui_browser__warning(&browser->b, delay_secs * 2,
-- 
2.17.1


^ permalink raw reply related	[flat|nested] 7+ messages in thread

* Re: [PATCH v4 1/3] perf report: Change sort order by a specified event in group
  2019-12-18  2:24 [PATCH v4 1/3] perf report: Change sort order by a specified event in group Jin Yao
  2019-12-18  2:24 ` [PATCH v4 2/3] perf report: Support a new key to reload the browser Jin Yao
  2019-12-18  2:24 ` [PATCH v4 3/3] perf report: support hotkey to let user select any event for sorting Jin Yao
@ 2019-12-18  7:43 ` Jiri Olsa
  2 siblings, 0 replies; 7+ messages in thread
From: Jiri Olsa @ 2019-12-18  7:43 UTC (permalink / raw)
  To: Jin Yao
  Cc: acme, jolsa, peterz, mingo, alexander.shishkin, Linux-kernel, ak,
	kan.liang, yao.jin

On Wed, Dec 18, 2019 at 10:24:41AM +0800, Jin Yao wrote:

SNIP

> After:
> 
>   # perf report --group --stdio --group-sort-idx 3
> 
>   # To display the perf.data header info, please use --header/--header-only options.
>   #
>   #
>   # Total Lost Samples: 0
>   #
>   # Samples: 12K of events 'cpu/instructions,period=2000003/, cpu/cpu-cycles,period=200003/, BR_MISP_RETIRED.ALL_BRANCHES:pp, cpu/event=0xc0,umask=1,cmask=1,
>   # Event count (approx.): 6451235635
>   #
>   #                         Overhead  Command    Shared Object            Symbol
>   # ................................  .........  .......................  ...................................
>   #
>       92.19%  98.68%   0.00%  93.30%  mgen       mgen                     [.] LOOP1
>        0.00%   0.13%   0.00%   6.08%  swapper    [kernel.kallsyms]        [k] intel_idle
>        3.12%   0.29%   0.00%   0.16%  gsd-color  libglib-2.0.so.0.5600.4  [.] 0x0000000000049515
>        0.00%   0.00%   0.00%   0.06%  swapper    [kernel.kallsyms]        [k] hrtimer_start_range_ns
>        1.56%   0.03%   0.00%   0.04%  gsd-color  libglib-2.0.so.0.5600.4  [.] 0x00000000000494b7
>        0.00%   0.15%   0.00%   0.04%  perf       [kernel.kallsyms]        [k] smp_call_function_single
>        0.00%   0.00%   0.00%   0.02%  mgen       [kernel.kallsyms]        [k] update_curr
>        0.00%   0.00%   0.00%   0.02%  mgen       [kernel.kallsyms]        [k] apic_timer_interrupt
>        0.00%   0.00%   0.00%   0.02%  mgen       [kernel.kallsyms]        [k] native_apic_msr_eoi_write
>        0.00%   0.00%   0.00%   0.02%  mgen       [kernel.kallsyms]        [k] __update_load_avg_se
>        0.00%   0.00%   0.00%   0.02%  mgen       [kernel.kallsyms]        [k] scheduler_tick
> 
> Now the output is sorted by the fourth event in group.
> 
>  v4:
>  ---
>  1. Update Documentation/perf-report.txt to mention
>     '--group-sort-idx' support multiple groups with different
>     amount of events and it should be used on grouped events.
> 
>  2. Update __hpp__group_sort_idx(), just return when the
>     idx is out of limit.
> 
>  3. Return failure on symbol_conf.group_sort_idx && !session->evlist->nr_groups.
>     So now we don't need to use together with --group.

Acked-by: Jiri Olsa <jolsa@kernel.org>

thanks,
jirka


^ permalink raw reply	[flat|nested] 7+ messages in thread

* Re: [PATCH v4 3/3] perf report: support hotkey to let user select any event for sorting
  2019-12-18  2:24 ` [PATCH v4 3/3] perf report: support hotkey to let user select any event for sorting Jin Yao
@ 2019-12-18  7:47   ` Jiri Olsa
  2019-12-19  1:14     ` Jin, Yao
  0 siblings, 1 reply; 7+ messages in thread
From: Jiri Olsa @ 2019-12-18  7:47 UTC (permalink / raw)
  To: Jin Yao
  Cc: acme, jolsa, peterz, mingo, alexander.shishkin, Linux-kernel, ak,
	kan.liang, yao.jin

On Wed, Dec 18, 2019 at 10:24:43AM +0800, Jin Yao wrote:
> When performing "perf report --group", it shows the event group information
> together. In previous patch, we have supported a new option "--group-sort-idx"
> to sort the output by the event at the index n in event group.
> 
> It would be nice if we can use a hotkey in browser to select a event
> to sort.
> 
> For example,
> 
>   # perf report --group
> 
>  Samples: 12K of events 'cpu/instructions,period=2000003/, cpu/cpu-cycles,period=200003/, ...
>                         Overhead  Command    Shared Object            Symbol
>   92.19%  98.68%   0.00%  93.30%  mgen       mgen                     [.] LOOP1
>    3.12%   0.29%   0.00%   0.16%  gsd-color  libglib-2.0.so.0.5600.4  [.] 0x0000000000049515
>    1.56%   0.03%   0.00%   0.04%  gsd-color  libglib-2.0.so.0.5600.4  [.] 0x00000000000494b7
>    1.56%   0.01%   0.00%   0.00%  gsd-color  libglib-2.0.so.0.5600.4  [.] 0x00000000000494ce
>    1.56%   0.00%   0.00%   0.00%  mgen       [kernel.kallsyms]        [k] task_tick_fair
>    0.00%   0.15%   0.00%   0.04%  perf       [kernel.kallsyms]        [k] smp_call_function_single
>    0.00%   0.13%   0.00%   6.08%  swapper    [kernel.kallsyms]        [k] intel_idle
>    0.00%   0.03%   0.00%   0.00%  gsd-color  libglib-2.0.so.0.5600.4  [.] g_main_context_check
>    0.00%   0.03%   0.00%   0.00%  swapper    [kernel.kallsyms]        [k] apic_timer_interrupt
>    0.00%   0.03%   0.00%   0.00%  swapper    [kernel.kallsyms]        [k] check_preempt_curr
> 
> When user press hotkey '3' (event index, starting from 0), it indicates
> to sort output by the forth event in group.
> 
>   Samples: 12K of events 'cpu/instructions,period=2000003/, cpu/cpu-cycles,period=200003/, ...
>                         Overhead  Command    Shared Object            Symbol
>   92.19%  98.68%   0.00%  93.30%  mgen       mgen                     [.] LOOP1
>    0.00%   0.13%   0.00%   6.08%  swapper    [kernel.kallsyms]        [k] intel_idle
>    3.12%   0.29%   0.00%   0.16%  gsd-color  libglib-2.0.so.0.5600.4  [.] 0x0000000000049515
>    0.00%   0.00%   0.00%   0.06%  swapper    [kernel.kallsyms]        [k] hrtimer_start_range_ns
>    1.56%   0.03%   0.00%   0.04%  gsd-color  libglib-2.0.so.0.5600.4  [.] 0x00000000000494b7
>    0.00%   0.15%   0.00%   0.04%  perf       [kernel.kallsyms]        [k] smp_call_function_single
>    0.00%   0.00%   0.00%   0.02%  mgen       [kernel.kallsyms]        [k] update_curr
>    0.00%   0.00%   0.00%   0.02%  mgen       [kernel.kallsyms]        [k] apic_timer_interrupt
>    0.00%   0.00%   0.00%   0.02%  mgen       [kernel.kallsyms]        [k] native_apic_msr_eoi_write
>    0.00%   0.00%   0.00%   0.02%  mgen       [kernel.kallsyms]        [k] __update_load_avg_se

when I press 0...9 I'm getting extra columns:

Samples: 134  of events 'anon group { cycles:u, instructions:u, cache-misses:u, cycles:u, instructions:u }', Event count (approx.): 7107344
                                Overhead  Command  Shared Object     Symbol                                                                  Self
  17.95%  41.20%   0.00%  12.44%  41.30%  ls       libc-2.29.so      [.] __strcoll_l                       17.95%  41.20%   0.00%  12.44%  41.30%       N/A
   0.00%  13.22%   0.00%   0.00%   0.00%  ls       ls                [.] 0x000000000000871c                 0.00%  13.22%   0.00%   0.00%   0.00%       N/A
   8.32%  11.49%   0.00%   2.62%   9.34%  ls       ld-2.29.so        [.] do_lookup_x                        8.32%  11.49%   0.00%   2.62%   9.34%       N/A
   0.00%   8.29%  31.18%  13.34%   3.05%  ls       ld-2.29.so        [.] _dl_lookup_symbol_x                0.00%   8.29%  31.18%  13.34%   3.05%       N/A
   0.00%   6.47%   0.00%   0.00%   0.00%  ls       libc-2.29.so      [.] __strlen_avx2                      0.00%   6.47%   0.00%   0.00%   0.00%       N/A
   0.00%   5.97%   0.00%   0.00%   0.00%  ls       ls                [.] 0x0000000000014001                 0.00%   5.97%   0.00%   0.00%   0.00%       N/A
   5.77%   5.83%   7.79%   4.78%   5.04%  ls       ld-2.29.so        [.] strcmp                             5.77%   5.83%   7.79%   4.78%   5.04%       N/A
   2.31%   4.35%   8.30%   0.00%   0.00%  ls       ld-2.29.so        [.] _dl_map_object_from_fd             2.31%   4.35%   8.30%   0.00%   0.00%       N/A
   0.00%   2.96%   0.00%   1.30%   2.22%  ls       ld-2.29.so        [.] __GI___tunables_init               0.00%   2.96%   0.00%   1.30%   2.22%       N/A
   0.66%   0.22%   0.68%   0.00%   0.21%  ls       ld-2.29.so        [.] _dl_start                          0.66%   0.22%   0.68%   0.00%   0.21%       N/A
   2.42%   0.00%   0.02%   3.16%   0.00%  ls       [unknown]         [k] 0xffffffffa2a012b0                 2.42%   0.00%   0.02%   3.16%   0.00%       N/A
   0.16%   0.00%   0.01%   0.20%   0.00%  ls       ld-2.29.so        [.] _start                             0.16%   0.00%   0.01%   0.20%   0.00%       N/A
   0.00%   0.00%  11.47%   0.00%   0.00%  ls       libcap.so.2.26    [.] 0x0000000000002420                 0.00%   0.00%  11.47%   0.00%   0.00%       N/A
   0.00%   0.00%  10.50%   0.00%   0.00%  ls       libc-2.29.so      [.] __GI___tcgetattr                   0.00%   0.00%  10.50%   0.00%   0.00%       N/A
   0.00%   0.00%   9.14%   0.00%   0.00%  ls       ls                [.] 0x000000000000767a                 0.00%   0.00%   9.14%   0.00%   0.00%       N/A
  13.60%   0.00%   7.14%   2.31%   0.00%  ls       ld-2.29.so        [.] _dl_relocate_object               13.60%   0.00%   7.14%   2.31%   0.00%       N/A
   2.13%   0.00%   6.14%   0.00%   0.00%  ls       ld-2.29.so        [.] _dl_map_object_deps                2.13%   0.00%   6.14%   0.00%   0.00%       N/A
   0.00%   0.00%   5.27%   0.00%   0.00%  ls       ld-2.29.so        [.] strlen                             0.00%   0.00%   5.27%   0.00%   0.00%       N/A
   1.31%   0.00%   2.37%   1.08%   0.00%  ls       ld-2.29.so        [.] _dl_sysdep_start                   1.31%   0.00%   2.37%   1.08%   0.00%       N/A


jirka


^ permalink raw reply	[flat|nested] 7+ messages in thread

* Re: [PATCH v4 3/3] perf report: support hotkey to let user select any event for sorting
  2019-12-18  7:47   ` Jiri Olsa
@ 2019-12-19  1:14     ` Jin, Yao
  2019-12-19  5:10       ` Jin, Yao
  0 siblings, 1 reply; 7+ messages in thread
From: Jin, Yao @ 2019-12-19  1:14 UTC (permalink / raw)
  To: Jiri Olsa
  Cc: acme, jolsa, peterz, mingo, alexander.shishkin, Linux-kernel, ak,
	kan.liang, yao.jin



On 12/18/2019 3:47 PM, Jiri Olsa wrote:
> On Wed, Dec 18, 2019 at 10:24:43AM +0800, Jin Yao wrote:
>> When performing "perf report --group", it shows the event group information
>> together. In previous patch, we have supported a new option "--group-sort-idx"
>> to sort the output by the event at the index n in event group.
>>
>> It would be nice if we can use a hotkey in browser to select a event
>> to sort.
>>
>> For example,
>>
>>    # perf report --group
>>
>>   Samples: 12K of events 'cpu/instructions,period=2000003/, cpu/cpu-cycles,period=200003/, ...
>>                          Overhead  Command    Shared Object            Symbol
>>    92.19%  98.68%   0.00%  93.30%  mgen       mgen                     [.] LOOP1
>>     3.12%   0.29%   0.00%   0.16%  gsd-color  libglib-2.0.so.0.5600.4  [.] 0x0000000000049515
>>     1.56%   0.03%   0.00%   0.04%  gsd-color  libglib-2.0.so.0.5600.4  [.] 0x00000000000494b7
>>     1.56%   0.01%   0.00%   0.00%  gsd-color  libglib-2.0.so.0.5600.4  [.] 0x00000000000494ce
>>     1.56%   0.00%   0.00%   0.00%  mgen       [kernel.kallsyms]        [k] task_tick_fair
>>     0.00%   0.15%   0.00%   0.04%  perf       [kernel.kallsyms]        [k] smp_call_function_single
>>     0.00%   0.13%   0.00%   6.08%  swapper    [kernel.kallsyms]        [k] intel_idle
>>     0.00%   0.03%   0.00%   0.00%  gsd-color  libglib-2.0.so.0.5600.4  [.] g_main_context_check
>>     0.00%   0.03%   0.00%   0.00%  swapper    [kernel.kallsyms]        [k] apic_timer_interrupt
>>     0.00%   0.03%   0.00%   0.00%  swapper    [kernel.kallsyms]        [k] check_preempt_curr
>>
>> When user press hotkey '3' (event index, starting from 0), it indicates
>> to sort output by the forth event in group.
>>
>>    Samples: 12K of events 'cpu/instructions,period=2000003/, cpu/cpu-cycles,period=200003/, ...
>>                          Overhead  Command    Shared Object            Symbol
>>    92.19%  98.68%   0.00%  93.30%  mgen       mgen                     [.] LOOP1
>>     0.00%   0.13%   0.00%   6.08%  swapper    [kernel.kallsyms]        [k] intel_idle
>>     3.12%   0.29%   0.00%   0.16%  gsd-color  libglib-2.0.so.0.5600.4  [.] 0x0000000000049515
>>     0.00%   0.00%   0.00%   0.06%  swapper    [kernel.kallsyms]        [k] hrtimer_start_range_ns
>>     1.56%   0.03%   0.00%   0.04%  gsd-color  libglib-2.0.so.0.5600.4  [.] 0x00000000000494b7
>>     0.00%   0.15%   0.00%   0.04%  perf       [kernel.kallsyms]        [k] smp_call_function_single
>>     0.00%   0.00%   0.00%   0.02%  mgen       [kernel.kallsyms]        [k] update_curr
>>     0.00%   0.00%   0.00%   0.02%  mgen       [kernel.kallsyms]        [k] apic_timer_interrupt
>>     0.00%   0.00%   0.00%   0.02%  mgen       [kernel.kallsyms]        [k] native_apic_msr_eoi_write
>>     0.00%   0.00%   0.00%   0.02%  mgen       [kernel.kallsyms]        [k] __update_load_avg_se
> 
> when I press 0...9 I'm getting extra columns:
> 
> Samples: 134  of events 'anon group { cycles:u, instructions:u, cache-misses:u, cycles:u, instructions:u }', Event count (approx.): 7107344
>                                  Overhead  Command  Shared Object     Symbol                                                                  Self
>    17.95%  41.20%   0.00%  12.44%  41.30%  ls       libc-2.29.so      [.] __strcoll_l                       17.95%  41.20%   0.00%  12.44%  41.30%       N/A
>     0.00%  13.22%   0.00%   0.00%   0.00%  ls       ls                [.] 0x000000000000871c                 0.00%  13.22%   0.00%   0.00%   0.00%       N/A
>     8.32%  11.49%   0.00%   2.62%   9.34%  ls       ld-2.29.so        [.] do_lookup_x                        8.32%  11.49%   0.00%   2.62%   9.34%       N/A
>     0.00%   8.29%  31.18%  13.34%   3.05%  ls       ld-2.29.so        [.] _dl_lookup_symbol_x                0.00%   8.29%  31.18%  13.34%   3.05%       N/A
>     0.00%   6.47%   0.00%   0.00%   0.00%  ls       libc-2.29.so      [.] __strlen_avx2                      0.00%   6.47%   0.00%   0.00%   0.00%       N/A
>     0.00%   5.97%   0.00%   0.00%   0.00%  ls       ls                [.] 0x0000000000014001                 0.00%   5.97%   0.00%   0.00%   0.00%       N/A
>     5.77%   5.83%   7.79%   4.78%   5.04%  ls       ld-2.29.so        [.] strcmp                             5.77%   5.83%   7.79%   4.78%   5.04%       N/A
>     2.31%   4.35%   8.30%   0.00%   0.00%  ls       ld-2.29.so        [.] _dl_map_object_from_fd             2.31%   4.35%   8.30%   0.00%   0.00%       N/A
>     0.00%   2.96%   0.00%   1.30%   2.22%  ls       ld-2.29.so        [.] __GI___tunables_init               0.00%   2.96%   0.00%   1.30%   2.22%       N/A
>     0.66%   0.22%   0.68%   0.00%   0.21%  ls       ld-2.29.so        [.] _dl_start                          0.66%   0.22%   0.68%   0.00%   0.21%       N/A
>     2.42%   0.00%   0.02%   3.16%   0.00%  ls       [unknown]         [k] 0xffffffffa2a012b0                 2.42%   0.00%   0.02%   3.16%   0.00%       N/A
>     0.16%   0.00%   0.01%   0.20%   0.00%  ls       ld-2.29.so        [.] _start                             0.16%   0.00%   0.01%   0.20%   0.00%       N/A
>     0.00%   0.00%  11.47%   0.00%   0.00%  ls       libcap.so.2.26    [.] 0x0000000000002420                 0.00%   0.00%  11.47%   0.00%   0.00%       N/A
>     0.00%   0.00%  10.50%   0.00%   0.00%  ls       libc-2.29.so      [.] __GI___tcgetattr                   0.00%   0.00%  10.50%   0.00%   0.00%       N/A
>     0.00%   0.00%   9.14%   0.00%   0.00%  ls       ls                [.] 0x000000000000767a                 0.00%   0.00%   9.14%   0.00%   0.00%       N/A
>    13.60%   0.00%   7.14%   2.31%   0.00%  ls       ld-2.29.so        [.] _dl_relocate_object               13.60%   0.00%   7.14%   2.31%   0.00%       N/A
>     2.13%   0.00%   6.14%   0.00%   0.00%  ls       ld-2.29.so        [.] _dl_map_object_deps                2.13%   0.00%   6.14%   0.00%   0.00%       N/A
>     0.00%   0.00%   5.27%   0.00%   0.00%  ls       ld-2.29.so        [.] strlen                             0.00%   0.00%   5.27%   0.00%   0.00%       N/A
>     1.31%   0.00%   2.37%   1.08%   0.00%  ls       ld-2.29.so        [.] _dl_sysdep_start                   1.31%   0.00%   2.37%   1.08%   0.00%       N/A
> 
> 
> jirka
> 

Looks it's an existing issue in perf. We can reproduce it by following 
steps.

1. perf record -a -e cycles,instructions -- sleep 3
2. perf report --group
3. In browser, we use hotkey 's' to switch to another perf.data
4. Now in browser, the extra columns 'Self' and 'Children' will be shown.

But I have not figured out which patch caused this issue. :(

Thanks
Jin Yao

^ permalink raw reply	[flat|nested] 7+ messages in thread

* Re: [PATCH v4 3/3] perf report: support hotkey to let user select any event for sorting
  2019-12-19  1:14     ` Jin, Yao
@ 2019-12-19  5:10       ` Jin, Yao
  0 siblings, 0 replies; 7+ messages in thread
From: Jin, Yao @ 2019-12-19  5:10 UTC (permalink / raw)
  To: Jiri Olsa
  Cc: acme, jolsa, peterz, mingo, alexander.shishkin, Linux-kernel, ak,
	kan.liang, yao.jin



On 12/19/2019 9:14 AM, Jin, Yao wrote:
> 
> 
> On 12/18/2019 3:47 PM, Jiri Olsa wrote:
>> On Wed, Dec 18, 2019 at 10:24:43AM +0800, Jin Yao wrote:
>>> When performing "perf report --group", it shows the event group 
>>> information
>>> together. In previous patch, we have supported a new option 
>>> "--group-sort-idx"
>>> to sort the output by the event at the index n in event group.
>>>
>>> It would be nice if we can use a hotkey in browser to select a event
>>> to sort.
>>>
>>> For example,
>>>
>>>    # perf report --group
>>>
>>>   Samples: 12K of events 'cpu/instructions,period=2000003/, 
>>> cpu/cpu-cycles,period=200003/, ...
>>>                          Overhead  Command    Shared 
>>> Object            Symbol
>>>    92.19%  98.68%   0.00%  93.30%  mgen       
>>> mgen                     [.] LOOP1
>>>     3.12%   0.29%   0.00%   0.16%  gsd-color  
>>> libglib-2.0.so.0.5600.4  [.] 0x0000000000049515
>>>     1.56%   0.03%   0.00%   0.04%  gsd-color  
>>> libglib-2.0.so.0.5600.4  [.] 0x00000000000494b7
>>>     1.56%   0.01%   0.00%   0.00%  gsd-color  
>>> libglib-2.0.so.0.5600.4  [.] 0x00000000000494ce
>>>     1.56%   0.00%   0.00%   0.00%  mgen       
>>> [kernel.kallsyms]        [k] task_tick_fair
>>>     0.00%   0.15%   0.00%   0.04%  perf       
>>> [kernel.kallsyms]        [k] smp_call_function_single
>>>     0.00%   0.13%   0.00%   6.08%  swapper    
>>> [kernel.kallsyms]        [k] intel_idle
>>>     0.00%   0.03%   0.00%   0.00%  gsd-color  
>>> libglib-2.0.so.0.5600.4  [.] g_main_context_check
>>>     0.00%   0.03%   0.00%   0.00%  swapper    
>>> [kernel.kallsyms]        [k] apic_timer_interrupt
>>>     0.00%   0.03%   0.00%   0.00%  swapper    
>>> [kernel.kallsyms]        [k] check_preempt_curr
>>>
>>> When user press hotkey '3' (event index, starting from 0), it indicates
>>> to sort output by the forth event in group.
>>>
>>>    Samples: 12K of events 'cpu/instructions,period=2000003/, 
>>> cpu/cpu-cycles,period=200003/, ...
>>>                          Overhead  Command    Shared 
>>> Object            Symbol
>>>    92.19%  98.68%   0.00%  93.30%  mgen       
>>> mgen                     [.] LOOP1
>>>     0.00%   0.13%   0.00%   6.08%  swapper    
>>> [kernel.kallsyms]        [k] intel_idle
>>>     3.12%   0.29%   0.00%   0.16%  gsd-color  
>>> libglib-2.0.so.0.5600.4  [.] 0x0000000000049515
>>>     0.00%   0.00%   0.00%   0.06%  swapper    
>>> [kernel.kallsyms]        [k] hrtimer_start_range_ns
>>>     1.56%   0.03%   0.00%   0.04%  gsd-color  
>>> libglib-2.0.so.0.5600.4  [.] 0x00000000000494b7
>>>     0.00%   0.15%   0.00%   0.04%  perf       
>>> [kernel.kallsyms]        [k] smp_call_function_single
>>>     0.00%   0.00%   0.00%   0.02%  mgen       
>>> [kernel.kallsyms]        [k] update_curr
>>>     0.00%   0.00%   0.00%   0.02%  mgen       
>>> [kernel.kallsyms]        [k] apic_timer_interrupt
>>>     0.00%   0.00%   0.00%   0.02%  mgen       
>>> [kernel.kallsyms]        [k] native_apic_msr_eoi_write
>>>     0.00%   0.00%   0.00%   0.02%  mgen       
>>> [kernel.kallsyms]        [k] __update_load_avg_se
>>
>> when I press 0...9 I'm getting extra columns:
>>
>> Samples: 134  of events 'anon group { cycles:u, instructions:u, 
>> cache-misses:u, cycles:u, instructions:u }', Event count (approx.): 
>> 7107344
>>                                  Overhead  Command  Shared Object     
>> Symbol                                                                  Self 
>>
>>    17.95%  41.20%   0.00%  12.44%  41.30%  ls       libc-2.29.so      
>> [.] __strcoll_l                       17.95%  41.20%   0.00%  12.44%  
>> 41.30%       N/A
>>     0.00%  13.22%   0.00%   0.00%   0.00%  ls       ls                
>> [.] 0x000000000000871c                 0.00%  13.22%   0.00%   0.00%   
>> 0.00%       N/A
>>     8.32%  11.49%   0.00%   2.62%   9.34%  ls       ld-2.29.so        
>> [.] do_lookup_x                        8.32%  11.49%   0.00%   2.62%   
>> 9.34%       N/A
>>     0.00%   8.29%  31.18%  13.34%   3.05%  ls       ld-2.29.so        
>> [.] _dl_lookup_symbol_x                0.00%   8.29%  31.18%  13.34%   
>> 3.05%       N/A
>>     0.00%   6.47%   0.00%   0.00%   0.00%  ls       libc-2.29.so      
>> [.] __strlen_avx2                      0.00%   6.47%   0.00%   0.00%   
>> 0.00%       N/A
>>     0.00%   5.97%   0.00%   0.00%   0.00%  ls       ls                
>> [.] 0x0000000000014001                 0.00%   5.97%   0.00%   0.00%   
>> 0.00%       N/A
>>     5.77%   5.83%   7.79%   4.78%   5.04%  ls       ld-2.29.so        
>> [.] strcmp                             5.77%   5.83%   7.79%   4.78%   
>> 5.04%       N/A
>>     2.31%   4.35%   8.30%   0.00%   0.00%  ls       ld-2.29.so        
>> [.] _dl_map_object_from_fd             2.31%   4.35%   8.30%   0.00%   
>> 0.00%       N/A
>>     0.00%   2.96%   0.00%   1.30%   2.22%  ls       ld-2.29.so        
>> [.] __GI___tunables_init               0.00%   2.96%   0.00%   1.30%   
>> 2.22%       N/A
>>     0.66%   0.22%   0.68%   0.00%   0.21%  ls       ld-2.29.so        
>> [.] _dl_start                          0.66%   0.22%   0.68%   0.00%   
>> 0.21%       N/A
>>     2.42%   0.00%   0.02%   3.16%   0.00%  ls       [unknown]         
>> [k] 0xffffffffa2a012b0                 2.42%   0.00%   0.02%   3.16%   
>> 0.00%       N/A
>>     0.16%   0.00%   0.01%   0.20%   0.00%  ls       ld-2.29.so        
>> [.] _start                             0.16%   0.00%   0.01%   0.20%   
>> 0.00%       N/A
>>     0.00%   0.00%  11.47%   0.00%   0.00%  ls       libcap.so.2.26    
>> [.] 0x0000000000002420                 0.00%   0.00%  11.47%   0.00%   
>> 0.00%       N/A
>>     0.00%   0.00%  10.50%   0.00%   0.00%  ls       libc-2.29.so      
>> [.] __GI___tcgetattr                   0.00%   0.00%  10.50%   0.00%   
>> 0.00%       N/A
>>     0.00%   0.00%   9.14%   0.00%   0.00%  ls       ls                
>> [.] 0x000000000000767a                 0.00%   0.00%   9.14%   0.00%   
>> 0.00%       N/A
>>    13.60%   0.00%   7.14%   2.31%   0.00%  ls       ld-2.29.so        
>> [.] _dl_relocate_object               13.60%   0.00%   7.14%   2.31%   
>> 0.00%       N/A
>>     2.13%   0.00%   6.14%   0.00%   0.00%  ls       ld-2.29.so        
>> [.] _dl_map_object_deps                2.13%   0.00%   6.14%   0.00%   
>> 0.00%       N/A
>>     0.00%   0.00%   5.27%   0.00%   0.00%  ls       ld-2.29.so        
>> [.] strlen                             0.00%   0.00%   5.27%   0.00%   
>> 0.00%       N/A
>>     1.31%   0.00%   2.37%   1.08%   0.00%  ls       ld-2.29.so        
>> [.] _dl_sysdep_start                   1.31%   0.00%   2.37%   1.08%   
>> 0.00%       N/A
>>
>>
>> jirka
>>
> 
> Looks it's an existing issue in perf. We can reproduce it by following 
> steps.
> 
> 1. perf record -a -e cycles,instructions -- sleep 3
> 2. perf report --group
> 3. In browser, we use hotkey 's' to switch to another perf.data
> 4. Now in browser, the extra columns 'Self' and 'Children' will be shown.
> 
> But I have not figured out which patch caused this issue. :(
> 
> Thanks
> Jin Yao

I have debugged this issue and I find that's because setup_sorting() is 
executed again after repeat path, so dimensions are added again.

Could you help to review following fix? Thanks!

diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 387311c67264..de988589d99b 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -1076,6 +1076,7 @@ int cmd_report(int argc, const char **argv)
         struct stat st;
         bool has_br_stack = false;
         int branch_mode = -1;
+       int last_key = 0;
         bool branch_call_mode = false;
  #define CALLCHAIN_DEFAULT_OPT  "graph,0.5,caller,function,percent"
         static const char report_callchain_help[] = "Display call graph 
(stack chain/backtrace):\n\n"
@@ -1450,7 +1451,8 @@ int cmd_report(int argc, const char **argv)
                 sort_order = sort_tmp;
         }

-       if (setup_sorting(session->evlist) < 0) {
+       if ((last_key != K_SWITCH_INPUT_DATA) &&
+           (setup_sorting(session->evlist) < 0)) {
                 if (sort_order)
                         parse_options_usage(report_usage, options, "s", 1);
                 if (field_order)
@@ -1530,6 +1532,7 @@ int cmd_report(int argc, const char **argv)
         ret = __cmd_report(&report);
         if (ret == K_SWITCH_INPUT_DATA) {
                 perf_session__delete(session);
+               last_key = K_SWITCH_INPUT_DATA;
                 goto repeat;
         } else
                 ret = 0;

Thanks
Jin Yao

^ permalink raw reply related	[flat|nested] 7+ messages in thread

end of thread, other threads:[~2019-12-19  5:10 UTC | newest]

Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-12-18  2:24 [PATCH v4 1/3] perf report: Change sort order by a specified event in group Jin Yao
2019-12-18  2:24 ` [PATCH v4 2/3] perf report: Support a new key to reload the browser Jin Yao
2019-12-18  2:24 ` [PATCH v4 3/3] perf report: support hotkey to let user select any event for sorting Jin Yao
2019-12-18  7:47   ` Jiri Olsa
2019-12-19  1:14     ` Jin, Yao
2019-12-19  5:10       ` Jin, Yao
2019-12-18  7:43 ` [PATCH v4 1/3] perf report: Change sort order by a specified event in group Jiri Olsa

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