linux-kernel - [PATCH 06/11] perf stat: Do not indent headers for JSON

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Message-Id: <20221112032244.1077370-7-namhyung@kernel.org>
Date:   Fri, 11 Nov 2022 19:22:39 -0800
From:   Namhyung Kim <namhyung@...nel.org>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>,
        Jiri Olsa <jolsa@...nel.org>
Cc:     Ingo Molnar <mingo@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Ian Rogers <irogers@...gle.com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        linux-perf-users@...r.kernel.org,
        Kan Liang <kan.liang@...ux.intel.com>,
        Zhengjun Xing <zhengjun.xing@...ux.intel.com>,
        James Clark <james.clark@....com>
Subject: [PATCH 06/11] perf stat: Do not indent headers for JSON

Currently --metric-only with --json indents header lines.  This is not
needed for JSON.

  $ perf stat -aA --metric-only -j true
        {"unit" : "GHz"}{"unit" : "insn per cycle"}{"unit" : "branch-misses of all branches"}
  {"cpu" : "0", {"metric-value" : "0.101"}{"metric-value" : "0.86"}{"metric-value" : "1.91"}
  {"cpu" : "1", {"metric-value" : "0.102"}{"metric-value" : "0.87"}{"metric-value" : "2.02"}
  {"cpu" : "2", {"metric-value" : "0.085"}{"metric-value" : "1.02"}{"metric-value" : "1.69"}
  ...

Note that the other lines are broken JSON, but it will be handled later.

Acked-by: Ian Rogers <irogers@...gle.com>
Signed-off-by: Namhyung Kim <namhyung@...nel.org>
---
 tools/perf/util/stat-display.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/util/stat-display.c b/tools/perf/util/stat-display.c
index 3ddc159df4b2..dbd3ba380c9f 100644
--- a/tools/perf/util/stat-display.c
+++ b/tools/perf/util/stat-display.c
@@ -851,7 +851,7 @@ static void print_metric_headers(struct perf_stat_config *config,
 	if (prefix && !config->json_output)
 		fprintf(config->output, "%s", prefix);
 
-	if (!config->csv_output && !no_indent)
+	if (!config->csv_output && !config->json_output && !no_indent)
 		fprintf(config->output, "%*s",
 			aggr_header_lens[config->aggr_mode], "");
 	if (config->csv_output) {
-- 
2.38.1.493.g58b659f92b-goog