diff options
| author | Kan Liang <kan.liang@linux.intel.com> | 2024-08-13 09:02:06 -0700 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2024-08-14 10:20:40 -0300 |
| commit | e6952dcec8302643a8b59751df250d03762429c3 (patch) | |
| tree | a9a2a624f19772b9568b836506e15372be38180a /tools/perf/builtin-annotate.c | |
| parent | 20d6f555283915f24d52e29a982b547cf6517f06 (diff) | |
perf annotate: Display the branch counter histogram
Display the branch counter histogram in the annotation view.
Press 'B' to display the branch counter's abbreviation list as well.
Samples: 1M of events 'anon group { branch-instructions:ppp, branch-misses }',
4000 Hz, Event count (approx.):
f3 /home/sdp/test/tchain_edit [Percent: local period]
Percent │ IPC Cycle Branch Counter (Average IPC: 1.39, IPC Coverage: 29.4%)
│ 0000000000401755 <f3>:
0.00 0.00 │ endbr64
│ push %rbp
│ mov %rsp,%rbp
│ movl $0x0,-0x4(%rbp)
0.00 0.00 │1.33 3 |A |- | ↓ jmp 25
11.03 11.03 │ 11: mov -0x4(%rbp),%eax
│ and $0x1,%eax
│ test %eax,%eax
17.13 17.13 │2.41 1 |A |- | ↓ je 21
│ addl $0x1,-0x4(%rbp)
21.84 21.84 │2.22 2 |AA |- | ↓ jmp 25
17.13 17.13 │ 21: addl $0x1,-0x4(%rbp)
21.84 21.84 │ 25: cmpl $0x270f,-0x4(%rbp)
11.03 11.03 │0.61 3 |A |- | ↑ jle 11
│ nop
│ pop %rbp
0.00 0.00 │0.24 20 |AA |B | ← ret
Originally-by: Tinghao Zhang <tinghao.zhang@intel.com>
Reviewed-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: https://lore.kernel.org/r/20240813160208.2493643-8-kan.liang@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/builtin-annotate.c')
| -rw-r--r-- | tools/perf/builtin-annotate.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c index 9b4a8a379b5b..3dc6197ef3fa 100644 --- a/tools/perf/builtin-annotate.c +++ b/tools/perf/builtin-annotate.c @@ -927,11 +927,15 @@ int cmd_annotate(int argc, const char **argv) sort_order = "dso,symbol"; /* - * Set SORT_MODE__BRANCH so that annotate display IPC/Cycle - * if branch info is in perf data in TUI mode. + * Set SORT_MODE__BRANCH so that annotate displays IPC/Cycle and + * branch counters, if the corresponding branch info is available + * in the perf data in the TUI mode. */ - if ((use_browser == 1 || annotate.use_stdio2) && annotate.has_br_stack) + if ((use_browser == 1 || annotate.use_stdio2) && annotate.has_br_stack) { sort__mode = SORT_MODE__BRANCH; + if (annotate.session->evlist->nr_br_cntr > 0) + annotate_opts.show_br_cntr = true; + } if (setup_sorting(NULL) < 0) usage_with_options(annotate_usage, options); |