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| author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2018-04-05 11:13:24 -0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2018-04-05 11:18:39 -0300 |
| commit | c0459a092509f9c2ff91cc070cd2645d38e7cf7b (patch) | |
| tree | c686c7b0269fb06cdb97648f126dd6bbd113f304 /tools | |
| parent | 0d75f123a6dcdacb3550b0c3c44a283f7259289e (diff) | |
| download | linux-stable-c0459a092509f9c2ff91cc070cd2645d38e7cf7b.tar.gz linux-stable-c0459a092509f9c2ff91cc070cd2645d38e7cf7b.tar.bz2 linux-stable-c0459a092509f9c2ff91cc070cd2645d38e7cf7b.zip | |
perf annotate: Show group details on the title line
To match what is shown in the main 'perf report/top' title lines, i.e.
if a group is being shown, either a real group (recorded with "-e
'{a,b,c}') or a forced group (using 'perf report --group' for a
perf.data file recorded without {}) we will show multiple columns,
one per event, but we were failing to show the group details, so, for:
# perf report --header-only | grep cmdline
# cmdline : /home/acme/bin/perf record -e {cycles,instructions,cache-misses}
# perf report --group
The first line was showing just "cycles", now it shows the correct line,
which is:
Samples: 578 of events 'anon group { cycles, instructions, cache-misses }', 4000 Hz, Event count (approx.): 487421794
syscall_return_via_sysret /lib/modules/4.16.0-rc7/build/vmlinux
0.22 2.97 0.00 │ ↓ jmp 6c
│ mov %cr3,%rdi
1.33 10.89 4.00 │ ↓ jmp 62
│ mov %rdi,%rax
<SNIP>
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>
Fixes: 6920e2854e9a ("perf annotate browser: Show extra title line with event information")
Link: https://lkml.kernel.org/n/tip-i41tqh17c2dabnyzjh99r1oz@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/perf/util/annotate.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c index fffe16af9797..fbad8dfbb186 100644 --- a/tools/perf/util/annotate.c +++ b/tools/perf/util/annotate.c @@ -2600,7 +2600,7 @@ int __annotation__scnprintf_samples_period(struct annotation *notes, bool show_freq) { const char *ev_name = perf_evsel__name(evsel); - char ref[30] = " show reference callgraph, "; + char buf[1024], ref[30] = " show reference callgraph, "; char sample_freq_str[64] = ""; unsigned long nr_samples = 0; int nr_members = 1; @@ -2609,8 +2609,11 @@ int __annotation__scnprintf_samples_period(struct annotation *notes, char unit; int i; - if (perf_evsel__is_group_event(evsel)) + if (perf_evsel__is_group_event(evsel)) { + perf_evsel__group_desc(evsel, buf, sizeof(buf)); + ev_name = buf; nr_members = evsel->nr_members; + } for (i = 0; i < nr_members; i++) { struct sym_hist *ah = annotation__histogram(notes, evsel->idx + i); |