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| author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2018-03-16 20:57:47 +0100 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2018-03-21 16:53:43 +0100 |
| commit | d9bd766584491dbb6f96c85a27562eb1289b2ca9 (patch) | |
| tree | 3008a766c1fce1129b985ca89f19fa0c455e3e9c /tools/perf/util/annotate.h | |
| parent | perf report: Introduce --ignore-vmlinux command line option (diff) | |
| download | linux-d9bd766584491dbb6f96c85a27562eb1289b2ca9.tar.xz linux-d9bd766584491dbb6f96c85a27562eb1289b2ca9.zip | |
perf annotate browser: Add 'P' hotkey to dump annotation to file
Just like we have in the histograms browser used as the main screen for
'perf top --tui' and 'perf report --tui', to print the current
annotation to a file with a named composed by the symbol name and the
".annotation" suffix.
Here is one example of pressing 'A' on 'perf top' to live annotate a
kernel function and then press 'P' to dump that annotation, the
resulting file:
# cat _raw_spin_lock_irqsave.annotation
_raw_spin_lock_irqsave() /proc/kcore
Event: cycles:ppp
7.14 nop
21.43 push %rbx
7.14 pushfq
pop %rax
nop
mov %rax,%rbx
cli
nop
xor %eax,%eax
mov $0x1,%edx
64.29 lock cmpxchg %edx,(%rdi)
test %eax,%eax
↓ jne 2b
mov %rbx,%rax
pop %rbx
← retq
2b: mov %eax,%esi
→ callq queued_spin_lock_slowpath
mov %rbx,%rax
pop %rbx
← retq
#
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: https://lkml.kernel.org/n/tip-zzmnrwugb5vtk7bvg0rbx150@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/annotate.h')
| -rw-r--r-- | tools/perf/util/annotate.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/tools/perf/util/annotate.h b/tools/perf/util/annotate.h index 3faa58045b22..365e9df888cf 100644 --- a/tools/perf/util/annotate.h +++ b/tools/perf/util/annotate.h @@ -288,6 +288,8 @@ void symbol__annotate_zero_histogram(struct symbol *sym, int evidx); void symbol__annotate_decay_histogram(struct symbol *sym, int evidx); void annotated_source__purge(struct annotated_source *as); +int map_symbol__annotation_dump(struct map_symbol *ms, struct perf_evsel *evsel); + bool ui__has_annotation(void); int symbol__tty_annotate(struct symbol *sym, struct map *map, |