The "stalled cycles per insn" is appended to "instructions" when
the CPU has this hardware counter directly. We should always make it
a separate line, which also aligns to the output when we hit the
"if (total && avg)" branch.
Before:
$ sudo perf stat --all-cpus --field-separator , --log-fd 1
-einstructions,cycles -- sleep 1
4565048704,,instructions,64114578096,100.00,1.34,insn per cycle,,
3396325133,,cycles,64146628546,100.00,,
After:
$ sudo ./tools/perf/perf stat --all-cpus --field-separator , --log-fd 1
-einstructions,cycles -- sleep 1
6721924,,instructions,24026790339,100.00,0.22,insn per cycle
,,,,,0.00,stalled cycles per insn
30939953,,cycles,24025512526,100.00,,
Cc: Andi Kleen <a...@linux.intel.com>
Cc: Jiri Olsa <jo...@kernel.org>
Cc: Ingo Molnar <mi...@redhat.com>
Cc: Arnaldo Carvalho de Melo <a...@kernel.org>
Signed-off-by: Cong Wang <xiyou.wangc...@gmail.com>
---
tools/perf/util/stat-shadow.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/tools/perf/util/stat-shadow.c b/tools/perf/util/stat-shadow.c
index 83d8094be4fe..5c5e012e99c4 100644
--- a/tools/perf/util/stat-shadow.c
+++ b/tools/perf/util/stat-shadow.c
@@ -800,7 +800,8 @@ void perf_stat__print_shadow_stats(struct perf_stat_config
*config,
"stalled cycles per insn",
ratio);
} else if (have_frontend_stalled) {
- print_metric(config, ctxp, NULL, NULL,
+ out->new_line(config, ctxp);
+ print_metric(config, ctxp, NULL, "%7.2f ",
"stalled cycles per insn", 0);
}
} else if (perf_evsel__match(evsel, HARDWARE, HW_BRANCH_MISSES)) {
--
2.21.0
