[PATCH v3 10/18] perf stat: Remove "unit" workarounds for metric-only

Ian Rogers
2025-11-11T04:04:45Z

Remove code that tested the "unit" as in KB/sec for certain hard coded
metric values and did workarounds.

Signed-off-by: Ian Rogers <irogers@google.com>
---
tools/perf/util/stat-display.c | 47 ++++++----------------------------
1 file changed, 8 insertions(+), 39 deletions(-)

diff --git a/tools/perf/util/stat-display.c b/tools/perf/util/stat-display.c
index eabeab5e6614..b3596f9f5cdd 100644
--- a/tools/perf/util/stat-display.c
+++ b/tools/perf/util/stat-display.c
@@ -592,42 +592,18 @@ static void print_metricgroup_header_std(struct perf_stat_config *config,
fprintf(config->output, "%*s", MGROUP_LEN - n - 1, "");
}

-/* Filter out some columns that don't work well in metrics only mode */
-
-static bool valid_only_metric(const char *unit)
-{
- if (!unit)
- return false;
- if (strstr(unit, "/sec") ||
- strstr(unit, "CPUs utilized"))
- return false;
- return true;
-}
-
-static const char *fixunit(char *buf, struct evsel *evsel,
- const char *unit)
-{
- if (!strncmp(unit, "of all", 6)) {
- snprintf(buf, 1024, "%s %s", evsel__name(evsel),
- unit);
- return buf;
- }
- return unit;
-}
-
static void print_metric_only(struct perf_stat_config *config,
void *ctx, enum metric_threshold_classify thresh,
const char *fmt, const char *unit, double val)
{
struct outstate *os = ctx;
FILE *out = os->fh;
- char buf[1024], str[1024];
+ char str[1024];
unsigned mlen = config->metric_only_len;
const char *color = metric_threshold_classify__color(thresh);

- if (!valid_only_metric(unit))
- return;
- unit = fixunit(buf, os->evsel, unit);
+ if (!unit)
+ unit = "";
if (mlen < strlen(unit))
mlen = strlen(unit) + 1;

@@ -643,16 +619,15 @@ static void print_metric_only_csv(struct perf_stat_config *config __maybe_unused
void *ctx,
enum metric_threshold_classify thresh __maybe_unused,
const char *fmt,
- const char *unit, double val)
+ const char *unit __maybe_unused, double val)
{
struct outstate *os = ctx;
FILE *out = os->fh;
char buf[64], *vals, *ends;
- char tbuf[1024];

- if (!valid_only_metric(unit))
+ if (!unit)
return;
- unit = fixunit(tbuf, os->evsel, unit);
+
snprintf(buf, sizeof(buf), fmt ?: "", val);
ends = vals = skip_spaces(buf);
while (isdigit(*ends) || *ends == '.')
@@ -670,13 +645,9 @@ static void print_metric_only_json(struct perf_stat_config *config __maybe_unuse
{
struct outstate *os = ctx;
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])
+ if (!unit || !unit[0])
return;
snprintf(buf, sizeof(buf), fmt ?: "", val);
vals = ends = skip_spaces(buf);
@@ -695,7 +666,6 @@ static void print_metric_header(struct perf_stat_config *config,
const char *unit, double val __maybe_unused)
{
struct outstate *os = ctx;
- char tbuf[1024];

/* In case of iostat, print metric header for first root port only */
if (config->iostat_run &&
@@ -705,9 +675,8 @@ static void print_metric_header(struct perf_stat_config *config,
if (os->evsel->cgrp != os->cgrp)
return;

- if (!valid_only_metric(unit))
+ if (!unit)
return;
- unit = fixunit(tbuf, os->evsel, unit);

if (config->json_output)
return;
--
2.51.2.1041.gc1ab5b90ca-goog