[tip:perf/core] perf list: Unify metric group description format with PMU event description

[tip-bot for Michael Petlan]

Commit-ID:  95f04328e42dc7d1eb08f3cb38150c1f2ec09f57
Gitweb:     https://git.kernel.org/tip/95f04328e42dc7d1eb08f3cb38150c1f2ec09f57
Author:     Michael Petlan <mpetlan@xxxxxxxxxx>
AuthorDate: Mon, 30 Jul 2018 17:35:04 -0400
Committer:  Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Tue, 31 Jul 2018 11:35:44 -0300

perf list: Unify metric group description format with PMU event description

PMU event descriptions use 7 spaces + '[' or 8 spaces as indentation.
Metric groups used a tab + '['. This patch unifies it to the way PMU
event descriptions are indented.

BEFORE:

  $ perf list
  [...]
  Metric Groups:

  DSB:
    DSB_Coverage
	  [Fraction of Uops delivered by the DSB (aka Decoded Icache; or Uop Cache)]
  [...]

AFTER:

  $ perf list
  [...]
  Metric Groups:

  DSB:
    DSB_Coverage
         [Fraction of Uops delivered by the DSB (aka Decoded Icache; or Uop Cache)]
  [...]

Signed-off-by: Michael Petlan <mpetlan@xxxxxxxxxx>
Acked-by: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Kim Phillips <kim.phillips@xxxxxxx>
LPU-Reference: 771439042.22924766.1532986504631.JavaMail.zimbra@xxxxxxxxxx
Link: https://lkml.kernel.org/n/tip-mlo850517m6u1rbjndvd1bwr@xxxxxxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
 tools/perf/util/metricgroup.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/perf/util/metricgroup.c b/tools/perf/util/metricgroup.c
index 96eab4ec34ff..a28f9b5cc4ff 100644
--- a/tools/perf/util/metricgroup.c
+++ b/tools/perf/util/metricgroup.c
@@ -326,8 +326,8 @@ void metricgroup__print(bool metrics, bool metricgroups, char *filter,
 				if (raw)
 					s = (char *)pe->metric_name;
 				else {
-					if (asprintf(&s, "%s\n\t[%s]",
-						     pe->metric_name, pe->desc) < 0)
+					if (asprintf(&s, "%s\n%*s%s]",
+						     pe->metric_name, 8, "[", pe->desc) < 0)
 						return;
 				}