perf annotate browser: Show extra title line with event information
So at the top we'll have two lines, like this, from 'perf report':
# perf report --group --ignore-vmlinux
=====================================================================================================
Samples: 46 of events 'cycles', 4000 Hz, Event count (approx.): 5154895
_raw_spin_lock_irqsave /proc/kcore
Percent │ nop
│ push %rbx
0.00 14.29 0.00 │ pushfq
9.09 0.00 0.00 │ pop %rax
9.09 0.00 20.00 │ nop
│ mov %rax,%rbx
│ cli
4.55 7.14 0.00 │ nop
│ xor %eax,%eax
│ mov $0x1,%edx
│ lock cmpxchg %edx,(%rdi)
77.27 78.57 70.00 │ test %eax,%eax
│ ↓ jne 2b
│ mov %rbx,%rax
0.00 0.00 10.00 │ pop %rbx
│ ← retq
│2b: mov %eax,%esi
│ → callq queued_spin_lock_slowpath
│ mov %rbx,%rax
│ pop %rbx
Press 'h' for help on│key bindings
=====================================================================================================
9.09 + 9.09 + 4.55 + 77.27 = 100
14.29 + 7.14 + 78.57 = 100
20 + 70 + 10 = 100
We can do the math by using 't' to toggle from 'percent' to nr
=====================================================================================================
Samples: 46 of events 'cycles', 4000 Hz, Event count (approx.): 5154895
_raw_spin_lock_irqsave /proc/kcore
Period │ nop
│ push %rbx
0 79273 0 │ pushfq
190455 0 0 │ pop %rax
198038 0 3045 │ nop
│ mov %rax,%rbx
│ cli
217233 32562 0 │ nop
│ xor %eax,%eax
│ mov $0x1,%edx
│ lock cmpxchg %edx,(%rdi)
3421649 979174 28273 │ test %eax,%eax
│ ↓ jne 2b
│ mov %rbx,%rax
0 0 5193 │ pop %rbx
│ ← retq
│2b: mov %eax,%esi
│ → callq queued_spin_lock_slowpath
│ mov %rbx,%rax
│ pop %rbx
Press 'h' for help on│key bindings
=====================================================================================================
79273 + 190455 + 198038 + 3045 + 217233 + 32562 + 3421649 + 979174 + 28273 + 5193 = 5154895
Or number of samples:
=====================================================================================================
ooSamples: 46 of events 'cycles', 4000 Hz, Event count (approx.): 5154895
_raw_spin_lock_irqsave /proc/kcore
Samples │ nop
│ push %rbx
0 2 0 │ pushfq
2 0 0 │ pop %rax
2 0 2 │ nop
│ mov %rax,%rbx
│ cli
1 1 0 │ nop
│ xor %eax,%eax
│ mov $0x1,%edx
│ lock cmpxchg %edx,(%rdi)
17 11 7 │ test %eax,%eax
│ ↓ jne 2b
│ mov %rbx,%rax
0 0 1 │ pop %rbx
│ ← retq
│2b: mov %eax,%esi
│ → callq queued_spin_lock_slowpath
│ mov %rbx,%rax
│ pop %rbx
Press 'h' for help on key bindings
=====================================================================================================
2 + 2 + 2 + 2 + 1 + 1 + 17 + 11 + 7 + 1 = 46
Suggested-by: Martin Liška <mliska@suse.cz>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=196935
Link: https://lkml.kernel.org/n/tip-ezccyxld50wtwyt66np6aomo@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo
Родитель
b213eac245
Коммит
6920e2854e
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@ -592,21 +592,40 @@ bool annotate_browser__continue_search_reverse(struct annotate_browser *browser,
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return __annotate_browser__search_reverse(browser);
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}
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static int annotate_browser__show(struct ui_browser *browser, char *title, const char *help)
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{
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struct map_symbol *ms = browser->priv;
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struct symbol *sym = ms->sym;
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char symbol_dso[SYM_TITLE_MAX_SIZE];
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if (ui_browser__show(browser, title, help) < 0)
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return -1;
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sym_title(sym, ms->map, symbol_dso, sizeof(symbol_dso));
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ui_browser__gotorc_title(browser, 0, 0);
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ui_browser__set_color(browser, HE_COLORSET_ROOT);
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ui_browser__write_nstring(browser, symbol_dso, browser->width + 1);
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return 0;
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}
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static int annotate_browser__run(struct annotate_browser *browser,
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struct perf_evsel *evsel,
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struct hist_browser_timer *hbt)
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{
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struct rb_node *nd = NULL;
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struct hists *hists = evsel__hists(evsel);
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struct map_symbol *ms = browser->b.priv;
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struct symbol *sym = ms->sym;
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struct annotation *notes = symbol__annotation(ms->sym);
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const char *help = "Press 'h' for help on key bindings";
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int delay_secs = hbt ? hbt->refresh : 0;
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char title[256];
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int key;
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char title[SYM_TITLE_MAX_SIZE];
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sym_title(sym, ms->map, title, sizeof(title));
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if (ui_browser__show(&browser->b, title, help) < 0)
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annotation__scnprintf_samples_period(notes, title, sizeof(title), evsel);
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if (annotate_browser__show(&browser->b, title, help) < 0)
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return -1;
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annotate_browser__calc_percent(browser, evsel);
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@ -637,8 +656,11 @@ static int annotate_browser__run(struct annotate_browser *browser,
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if (hbt)
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hbt->timer(hbt->arg);
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if (delay_secs != 0)
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if (delay_secs != 0) {
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symbol__annotate_decay_histogram(sym, evsel->idx);
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hists__scnprintf_title(hists, title, sizeof(title));
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annotate_browser__show(&browser->b, title, help);
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}
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continue;
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case K_TAB:
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if (nd != NULL) {
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@ -812,6 +834,7 @@ int symbol__tui_annotate(struct symbol *sym, struct map *map,
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.seek = ui_browser__list_head_seek,
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.write = annotate_browser__write,
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.filter = disasm_line__filter,
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.extra_title_lines = 1, /* for hists__scnprintf_title() */
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.priv = &ms,
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.use_navkeypressed = true,
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},
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