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authorArnaldo Carvalho de Melo <acme@redhat.com>2018-04-05 11:13:24 -0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2018-04-05 11:18:39 -0300
commitc0459a092509f9c2ff91cc070cd2645d38e7cf7b (patch)
treec686c7b0269fb06cdb97648f126dd6bbd113f304 /tools/perf/util
parent0d75f123a6dcdacb3550b0c3c44a283f7259289e (diff)
downloadop-kernel-dev-c0459a092509f9c2ff91cc070cd2645d38e7cf7b.zip
op-kernel-dev-c0459a092509f9c2ff91cc070cd2645d38e7cf7b.tar.gz
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/perf/util')
-rw-r--r--tools/perf/util/annotate.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
index fffe16a..fbad8df 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);
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