[PATCH 5/7] perf annotate-data: Support event group display in TUI
From: Namhyung Kim
Date: Wed Apr 10 2024 - 23:34:01 EST
Like in stdio, it should print all events in a group together.
Committer notes:
Collect it:
root@number:~# perf record -a -e '{cpu_core/mem-loads,ldlat=30/P,cpu_core/mem-stores/P}'
^C[ perf record: Woken up 8 times to write data ]
[ perf record: Captured and wrote 4.980 MB perf.data (55825 samples) ]
root@number:~#
Then do it in stdio:
root@number:~# perf annotate --stdio --data-type
Annotate type: 'union ' in /usr/lib64/libc.so.6 (1131 samples):
event[0] = cpu_core/mem-loads,ldlat=30/P
event[1] = cpu_core/mem-stores/P
============================================================================
Percent offset size field
100.00 100.00 0 40 union {
100.00 100.00 0 40 struct __pthread_mutex_s __data {
48.61 23.46 0 4 int __lock;
0.00 0.48 4 4 unsigned int __count;
6.38 41.32 8 4 int __owner;
8.74 34.02 12 4 unsigned int __nusers;
35.66 0.26 16 4 int __kind;
0.61 0.45 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;
48.61 23.94 0 8 long int __align;
};
Now with TUI before this patch:
root@number:~# perf annotate --tui --data-type
Annotate type: 'union ' (790 samples)
Percent Offset Size Field
100.00 0 40 union {
100.00 0 40 struct __pthread_mutex_s __data {
48.61 0 4 int __lock;
0.00 4 4 unsigned int __count;
6.38 8 4 int __owner;
8.74 12 4 unsigned int __nusers;
35.66 16 4 int __kind;
0.61 20 2 short int __spins;
0.00 22 2 short int __elision;
0.00 24 16 __pthread_list_t __list {
0.00 24 8 struct __pthread_internal_list* __prev;
0.00 32 8 struct __pthread_internal_list* __next;
0.00 0 0 char* __size;
48.61 0 8 long int __align;
};
And now after this patch:
Annotate type: 'union ' (790 samples)
Percent Offset Size Field
100.00 100.00 0 40 union {
100.00 100.00 0 40 struct __pthread_mutex_s __data {
48.61 23.46 0 4 int __lock;
0.00 0.48 4 4 unsigned int __count;
6.38 41.32 8 4 int __owner;
8.74 34.02 12 4 unsigned int __nusers;
35.66 0.26 16 4 int __kind;
0.61 0.45 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;
48.61 23.94 0 8 long int __align;
};
On a followup patch the --tui output should have this that is present in
--stdio:
And the --stdio has all the missing info in TUI:
Annotate type: 'union ' in /usr/lib64/libc.so.6 (1131 samples):
event[0] = cpu_core/mem-loads,ldlat=30/P
event[1] = cpu_core/mem-stores/P
Reviewed-by: Ian Rogers <irogers@xxxxxxxxxx>
Signed-off-by: Namhyung Kim <namhyung@xxxxxxxxxx>
Tested-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/perf/ui/browsers/annotate-data.c | 50 ++++++++++++++++++++------
1 file changed, 40 insertions(+), 10 deletions(-)
diff --git a/tools/perf/ui/browsers/annotate-data.c b/tools/perf/ui/browsers/annotate-data.c
index fefacaaf16db..a4a0f042f201 100644
--- a/tools/perf/ui/browsers/annotate-data.c
+++ b/tools/perf/ui/browsers/annotate-data.c
@@ -10,20 +10,27 @@
#include "util/annotate.h"
#include "util/annotate-data.h"
#include "util/evsel.h"
+#include "util/evlist.h"
#include "util/sort.h"
struct annotated_data_browser {
struct ui_browser b;
struct list_head entries;
+ int nr_events;
};
struct browser_entry {
struct list_head node;
struct annotated_member *data;
- struct type_hist_entry hists;
+ struct type_hist_entry *hists;
int indent;
};
+static struct annotated_data_browser *get_browser(struct ui_browser *uib)
+{
+ return container_of(uib, struct annotated_data_browser, b);
+}
+
static void update_hist_entry(struct type_hist_entry *dst,
struct type_hist_entry *src)
{
@@ -33,17 +40,21 @@ static void update_hist_entry(struct type_hist_entry *dst,
static int get_member_overhead(struct annotated_data_type *adt,
struct browser_entry *entry,
- struct evsel *evsel)
+ struct evsel *leader)
{
struct annotated_member *member = entry->data;
- int i;
+ int i, k;
for (i = 0; i < member->size; i++) {
struct type_hist *h;
+ struct evsel *evsel;
int offset = member->offset + i;
- h = adt->histograms[evsel->core.idx];
- update_hist_entry(&entry->hists, &h->addr[offset]);
+ for_each_group_evsel(evsel, leader) {
+ h = adt->histograms[evsel->core.idx];
+ k = evsel__group_idx(evsel);
+ update_hist_entry(&entry->hists[k], &h->addr[offset]);
+ }
}
return 0;
}
@@ -61,6 +72,12 @@ static int add_child_entries(struct annotated_data_browser *browser,
if (entry == NULL)
return -1;
+ entry->hists = calloc(browser->nr_events, sizeof(*entry->hists));
+ if (entry->hists == NULL) {
+ free(entry);
+ return -1;
+ }
+
entry->data = member;
entry->indent = indent;
if (get_member_overhead(adt, entry, evsel) < 0) {
@@ -113,6 +130,7 @@ static void annotated_data_browser__delete_entries(struct annotated_data_browser
list_for_each_entry_safe(pos, tmp, &browser->entries, node) {
list_del_init(&pos->node);
+ free(pos->hists);
free(pos);
}
}
@@ -126,6 +144,7 @@ static int browser__show(struct ui_browser *uib)
{
struct hist_entry *he = uib->priv;
struct annotated_data_type *adt = he->mem_type;
+ struct annotated_data_browser *browser = get_browser(uib);
const char *help = "Press 'h' for help on key bindings";
char title[256];
@@ -146,7 +165,8 @@ static int browser__show(struct ui_browser *uib)
else
strcpy(title, "Percent");
- ui_browser__printf(uib, " %10s %10s %10s %s",
+ ui_browser__printf(uib, "%*s %10s %10s %10s %s",
+ 11 * (browser->nr_events - 1), "",
title, "Offset", "Size", "Field");
ui_browser__write_nstring(uib, "", uib->width);
return 0;
@@ -175,18 +195,20 @@ static void browser__write_overhead(struct ui_browser *uib,
static void browser__write(struct ui_browser *uib, void *entry, int row)
{
+ struct annotated_data_browser *browser = get_browser(uib);
struct browser_entry *be = entry;
struct annotated_member *member = be->data;
struct hist_entry *he = uib->priv;
struct annotated_data_type *adt = he->mem_type;
- struct evsel *evsel = hists_to_evsel(he->hists);
+ struct evsel *leader = hists_to_evsel(he->hists);
+ struct evsel *evsel;
if (member == NULL) {
bool current = ui_browser__is_current_entry(uib, row);
/* print the closing bracket */
ui_browser__set_percent_color(uib, 0, current);
- ui_browser__write_nstring(uib, "", 11);
+ ui_browser__write_nstring(uib, "", 11 * browser->nr_events);
ui_browser__printf(uib, " %10s %10s %*s};",
"", "", be->indent * 4, "");
ui_browser__write_nstring(uib, "", uib->width);
@@ -194,8 +216,12 @@ static void browser__write(struct ui_browser *uib, void *entry, int row)
}
/* print the number */
- browser__write_overhead(uib, adt->histograms[evsel->core.idx],
- &be->hists, row);
+ 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);
+ }
/* print type info */
if (be->indent == 0 && !member->var_name) {
@@ -267,11 +293,15 @@ int hist_entry__annotate_data_tui(struct hist_entry *he, struct evsel *evsel,
.priv = he,
.extra_title_lines = 1,
},
+ .nr_events = 1,
};
int ret;
ui_helpline__push("Press ESC to exit");
+ if (evsel__is_group_event(evsel))
+ browser.nr_events = evsel->core.nr_members;
+
ret = annotated_data_browser__collect_entries(&browser);
if (ret == 0)
ret = annotated_data_browser__run(&browser, evsel, hbt);
--
2.44.0.478.gd926399ef9-goog