From: Namhyung Kim <namhyung@kernel.org>
Date: Fri, 2 Dec 2022 19:04:47 +0000 (-0800)
Subject: perf stat: Fix multi-line metric output in JSON
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=117195d9f8af74c65bf57d9b56f496b5b3655bcb;p=linux.git

perf stat: Fix multi-line metric output in JSON

When a metric produces more than one values, it missed to print the opening
bracket.

Fixes: ab6baaae27357290 ("perf stat: Fix JSON output in metric-only mode")
Reported-by: Weilin Wang <weilin.wang@intel.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Tested-by: Weilin Wang <weilin.wang@intel.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Athira Jajeev <atrajeev@linux.vnet.ibm.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com>
Link: https://lore.kernel.org/r/20221202190447.1588680-1-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---

diff --git a/tools/perf/util/stat-display.c b/tools/perf/util/stat-display.c
index 660e4f6616f55..7f885b04c23fb 100644
--- a/tools/perf/util/stat-display.c
+++ b/tools/perf/util/stat-display.c
@@ -441,7 +441,7 @@ static void new_line_json(struct perf_stat_config *config, void *ctx)
 {
 	struct outstate *os = ctx;
 
-	fputc('\n', os->fh);
+	fputs("\n{", os->fh);
 	if (os->prefix)
 		fprintf(os->fh, "%s", os->prefix);
 	aggr_printout(config, os->evsel, os->id, os->nr);