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-rw-r--r--tools/perf/util/stat-display.c11
1 files changed, 7 insertions, 4 deletions
diff --git a/tools/perf/util/stat-display.c b/tools/perf/util/stat-display.c
index ef0ca8cd802d..a137b377efa4 100644
--- a/tools/perf/util/stat-display.c
+++ b/tools/perf/util/stat-display.c
@@ -610,19 +610,22 @@ static void print_metric_only_json(struct perf_stat_config *config __maybe_unuse
{
struct outstate *os = ctx;
FILE *out = os->fh;
- char buf[64], *vals, *ends;
+ char buf[64], *ends;
char tbuf[1024];
+ const char *vals;
if (!valid_only_metric(unit))
return;
unit = fixunit(tbuf, os->evsel, unit);
+ if (!unit[0])
+ return;
snprintf(buf, sizeof(buf), fmt ?: "", val);
- ends = vals = skip_spaces(buf);
+ vals = ends = skip_spaces(buf);
while (isdigit(*ends) || *ends == '.')
ends++;
*ends = 0;
- if (!unit[0] || !vals[0])
- return;
+ if (!vals[0])
+ vals = "none";
fprintf(out, "%s\"%s\" : \"%s\"", os->first ? "" : ", ", unit, vals);
os->first = false;
}