From: Arnaldo Carvalho de Melo <acme@redhat.com>
Date: Wed, 5 Jul 2023 08:45:12 -0300
Subject: perf bench uprobe: Print diff to baseline
Git-commit: dded6f615b854740461be63672fa05158875ffaa
Patch-mainline: v6.6-rc1
References: perf-v6.7 (jsc#PED-6012 jsc#PED-6121)
This is just prep work to show the diff to the unmodified workload.
Acked-by: Ian Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andre Fredette <anfredet@redhat.com>
Cc: Clark Williams <williams@redhat.com>
Cc: Dave Tucker <datucker@redhat.com>
Cc: Derek Barbosa <debarbos@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/lkml/20230719204910.539044-3-acme@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Tony Jones <tonyj@suse.de>
---
tools/perf/bench/uprobe.c | 27 ++++++++++++++++++++++++---
1 file changed, 24 insertions(+), 3 deletions(-)
diff --git a/tools/perf/bench/uprobe.c b/tools/perf/bench/uprobe.c
index 707174220a76..60e7c43298d8 100644
--- a/tools/perf/bench/uprobe.c
+++ b/tools/perf/bench/uprobe.c
@@ -34,6 +34,29 @@ static const char * const bench_uprobe_usage[] = {
NULL
};
+static int bench_uprobe_format__default_fprintf(const char *name, const char *unit, u64 diff, FILE *fp)
+{
+ static u64 baseline;
+ s64 diff_to_baseline = diff - baseline;
+ int printed = fprintf(fp, "# Executed %'d %s calls\n", loops, name);
+
+ printed += fprintf(fp, " %14s: %'" PRIu64 " %ss", "Total time", diff, unit);
+
+ if (baseline)
+ printed += fprintf(fp, " %s%'" PRId64 " to baseline", diff_to_baseline > 0 ? "+" : "", diff_to_baseline);
+
+ printed += fprintf(fp, "\n\n %'.3f %ss/op", (double)diff / (double)loops, unit);
+
+ if (baseline)
+ printed += fprintf(fp, " %'.3f %ss/op to baseline", (double)diff_to_baseline / (double)loops, unit);
+ else
+ baseline = diff;
+
+ fputc('\n', fp);
+
+ return printed + 1;
+}
+
static int bench_uprobe(int argc, const char **argv)
{
const char *name = "usleep(1000)", *unit = "usec";
@@ -56,9 +79,7 @@ static int bench_uprobe(int argc, const char **argv)
switch (bench_format) {
case BENCH_FORMAT_DEFAULT:
- printf("# Executed %'d %s calls\n", loops, name);
- printf(" %14s: %'" PRIu64 " %ss\n\n", "Total time", diff, unit);
- printf(" %'.3f %ss/op\n", (double)diff / (double)loops, unit);
+ bench_uprobe_format__default_fprintf(name, unit, diff, stdout);
break;
case BENCH_FORMAT_SIMPLE: