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Message-ID: <ZraLFdiu04wjxyt0@x1>
Date: Fri, 9 Aug 2024 18:33:09 -0300
From: Arnaldo Carvalho de Melo <acme@...nel.org>
To: Namhyung Kim <namhyung@...nel.org>
Cc: Ian Rogers <irogers@...gle.com>, Kan Liang <kan.liang@...ux.intel.com>,
Jiri Olsa <jolsa@...nel.org>,
Adrian Hunter <adrian.hunter@...el.com>,
Peter Zijlstra <peterz@...radead.org>,
Ingo Molnar <mingo@...nel.org>, LKML <linux-kernel@...r.kernel.org>,
linux-perf-users@...r.kernel.org
Subject: Re: [PATCH] perf annotate-data: Support --skip-empty option
On Tue, Aug 06, 2024 at 11:17:13PM -0700, Namhyung Kim wrote:
> The --skip-empty option is to hide dummy events in a group. Like other
> output mode like perf report and perf annotate, the data-type profiling
> output should support the option.
Thanks, tested and applied.
Committer testing:
With dummy:
root@...ber:~# perf annotate --stdio --group --data-type --skip-empty | head -24
Annotate type: 'pthread_mutex_t' in /usr/lib64/libc.so.6 (50 samples):
event[0] = cpu_atom/mem-loads,ldlat=30/P
event[1] = cpu_atom/mem-stores/P
event[2] = dummy:u
============================================================================
Percent offset size field
100.00 100.00 0.00 0 40 pthread_mutex_t {
100.00 100.00 0.00 0 40 struct __pthread_mutex_s __data {
45.21 84.54 0.00 0 4 int __lock;
0.00 0.00 0.00 4 4 unsigned int __count;
0.00 1.83 0.00 8 4 int __owner;
5.19 10.65 0.00 12 4 unsigned int __nusers;
49.61 2.97 0.00 16 4 int __kind;
0.00 0.00 0.00 20 2 short int __spins;
0.00 0.00 0.00 22 2 short int __elision;
0.00 0.00 0.00 24 16 __pthread_list_t __list {
0.00 0.00 0.00 24 8 struct __pthread_internal_list* __prev;
0.00 0.00 0.00 32 8 struct __pthread_internal_list* __next;
};
};
0.00 0.00 0.00 0 0 char[] __size;
45.21 84.54 0.00 0 8 long int __align;
};
Skipping it:
root@...ber:~# perf annotate --stdio --group --data-type --skip-empty | head -24
Annotate type: 'pthread_mutex_t' in /usr/lib64/libc.so.6 (50 samples):
event[0] = cpu_atom/mem-loads,ldlat=30/P
event[1] = cpu_atom/mem-stores/P
============================================================================
Percent offset size field
100.00 100.00 0 40 pthread_mutex_t {
100.00 100.00 0 40 struct __pthread_mutex_s __data {
45.21 84.54 0 4 int __lock;
0.00 0.00 4 4 unsigned int __count;
0.00 1.83 8 4 int __owner;
5.19 10.65 12 4 unsigned int __nusers;
49.61 2.97 16 4 int __kind;
0.00 0.00 20 2 short int __spins;
0.00 0.00 22 2 short int __elision;
0.00 0.00 24 16 __pthread_list_t __list {
0.00 0.00 24 8 struct __pthread_internal_list* __prev;
0.00 0.00 32 8 struct __pthread_internal_list* __next;
};
};
0.00 0.00 0 0 char[] __size;
45.21 84.54 0 8 long int __align;
};
Annotate type: 'pthread_mutexattr_t' in /usr/lib64/libc.so.6 (1 samples):
root@...ber:~#
- Arnaldo
> Signed-off-by: Namhyung Kim <namhyung@...nel.org>
> ---
> tools/perf/ui/browsers/annotate-data.c | 30 ++++++++++++++----
> tools/perf/util/annotate-data.c | 44 +++++++++++++-------------
> 2 files changed, 45 insertions(+), 29 deletions(-)
>
> diff --git a/tools/perf/ui/browsers/annotate-data.c b/tools/perf/ui/browsers/annotate-data.c
> index 8d6bf08d371d..c3db80a7589a 100644
> --- a/tools/perf/ui/browsers/annotate-data.c
> +++ b/tools/perf/ui/browsers/annotate-data.c
> @@ -46,15 +46,18 @@ static int get_member_overhead(struct annotated_data_type *adt,
> struct annotated_member *member = entry->data;
> int i, k;
>
> - for (i = 0; i < member->size; i++) {
> + for (i = 0, k = 0; i < member->size; i++) {
> struct type_hist *h;
> struct evsel *evsel;
> int offset = member->offset + i;
>
> for_each_group_evsel(evsel, leader) {
> + if (symbol_conf.skip_empty &&
> + evsel__hists(evsel)->stats.nr_samples == 0)
> + continue;
> +
> h = adt->histograms[evsel->core.idx];
> - k = evsel__group_idx(evsel);
> - update_hist_entry(&entry->hists[k], &h->addr[offset]);
> + update_hist_entry(&entry->hists[k++], &h->addr[offset]);
> }
> }
> return 0;
> @@ -203,6 +206,7 @@ static void browser__write(struct ui_browser *uib, void *entry, int row)
> struct annotated_data_type *adt = he->mem_type;
> struct evsel *leader = hists_to_evsel(he->hists);
> struct evsel *evsel;
> + int idx = 0;
>
> if (member == NULL) {
> bool current = ui_browser__is_current_entry(uib, row);
> @@ -219,9 +223,12 @@ static void browser__write(struct ui_browser *uib, void *entry, int row)
> /* print the number */
> for_each_group_evsel(evsel, leader) {
> struct type_hist *h = adt->histograms[evsel->core.idx];
> - int idx = evsel__group_idx(evsel);
>
> - browser__write_overhead(uib, h, &be->hists[idx], row);
> + if (symbol_conf.skip_empty &&
> + evsel__hists(evsel)->stats.nr_samples == 0)
> + continue;
> +
> + browser__write_overhead(uib, h, &be->hists[idx++], row);
> }
>
> /* print type info */
> @@ -300,8 +307,17 @@ int hist_entry__annotate_data_tui(struct hist_entry *he, struct evsel *evsel,
>
> ui_helpline__push("Press ESC to exit");
>
> - if (evsel__is_group_event(evsel))
> - browser.nr_events = evsel->core.nr_members;
> + if (evsel__is_group_event(evsel)) {
> + struct evsel *pos;
> + int nr = 0;
> +
> + for_each_group_evsel(pos, evsel) {
> + if (!symbol_conf.skip_empty ||
> + evsel__hists(pos)->stats.nr_samples)
> + nr++;
> + }
> + browser.nr_events = nr;
> + }
>
> ret = annotated_data_browser__collect_entries(&browser);
> if (ret == 0)
> diff --git a/tools/perf/util/annotate-data.c b/tools/perf/util/annotate-data.c
> index 734acdd8c4b7..be3b84a82271 100644
> --- a/tools/perf/util/annotate-data.c
> +++ b/tools/perf/util/annotate-data.c
> @@ -1492,10 +1492,15 @@ static void print_annotated_data_header(struct hist_entry *he, struct evsel *evs
> struct evsel *pos;
> int i = 0;
>
> - for_each_group_evsel(pos, evsel)
> - printf(" event[%d] = %s\n", i++, pos->name);
> + nr_members = 0;
> + for_each_group_evsel(pos, evsel) {
> + if (symbol_conf.skip_empty &&
> + evsel__hists(pos)->stats.nr_samples == 0)
> + continue;
>
> - nr_members = evsel->core.nr_members;
> + printf(" event[%d] = %s\n", i++, pos->name);
> + nr_members++;
> + }
> }
>
> if (symbol_conf.show_total_period) {
> @@ -1530,31 +1535,26 @@ static void print_annotated_data_type(struct annotated_data_type *mem_type,
> {
> struct annotated_member *child;
> struct type_hist *h = mem_type->histograms[evsel->core.idx];
> - int i, nr_events = 1, samples = 0;
> + int i, nr_events = 0, samples = 0;
> u64 period = 0;
> int width = symbol_conf.show_total_period ? 11 : 7;
> + struct evsel *pos;
>
> - for (i = 0; i < member->size; i++) {
> - samples += h->addr[member->offset + i].nr_samples;
> - period += h->addr[member->offset + i].period;
> - }
> - print_annotated_data_value(h, period, samples);
> -
> - if (evsel__is_group_event(evsel)) {
> - struct evsel *pos;
> + for_each_group_evsel(pos, evsel) {
> + h = mem_type->histograms[pos->core.idx];
>
> - for_each_group_member(pos, evsel) {
> - h = mem_type->histograms[pos->core.idx];
> + if (symbol_conf.skip_empty &&
> + evsel__hists(pos)->stats.nr_samples == 0)
> + continue;
>
> - samples = 0;
> - period = 0;
> - for (i = 0; i < member->size; i++) {
> - samples += h->addr[member->offset + i].nr_samples;
> - period += h->addr[member->offset + i].period;
> - }
> - print_annotated_data_value(h, period, samples);
> + samples = 0;
> + period = 0;
> + for (i = 0; i < member->size; i++) {
> + samples += h->addr[member->offset + i].nr_samples;
> + period += h->addr[member->offset + i].period;
> }
> - nr_events = evsel->core.nr_members;
> + print_annotated_data_value(h, period, samples);
> + nr_events++;
> }
>
> printf(" %10d %10d %*s%s\t%s",
> --
> 2.46.0.rc2.264.g509ed76dc8-goog
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