Commit 54d81102 authored by Arnaldo Carvalho de Melo's avatar Arnaldo Carvalho de Melo
Browse files

perf bench uprobe: Show diff to previous 



Will be useful to show the incremental overhead as we do more stuff in
the BPF program attached to the uprobes.

Acked-by: default avatarIan 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/20230719204910.539044-4-acme@kernel.org


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent dded6f61

tools/perf/bench/uprobe.c

+16 −5
Original line number Diff line number Diff line
@@ -36,24 +36,35 @@ static const char * const bench_uprobe_usage[] = { 


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;

	static u64 baseline, previous;

	s64 diff_to_baseline = diff - baseline,

	    diff_to_previous = diff - previous;

	int printed = fprintf(fp, "# Executed %'d %s calls\n", loops, name);



	printed += fprintf(fp, " %14s: %'" PRIu64 " %ss", "Total time", diff, unit);



	if (baseline)

	if (baseline) {

		printed += fprintf(fp, " %s%'" PRId64 " to baseline", diff_to_baseline > 0 ? "+" : "", diff_to_baseline);



		if (previous != baseline)

			fprintf(stdout, " %s%'" PRId64 " to previous", diff_to_previous > 0 ? "+" : "", diff_to_previous);

	}



	printed += fprintf(fp, "\n\n %'.3f %ss/op", (double)diff / (double)loops, unit);



	if (baseline)

	if (baseline) {

		printed += fprintf(fp, " %'.3f %ss/op to baseline", (double)diff_to_baseline / (double)loops, unit);

	else



		if (previous != baseline)

			printed += fprintf(fp, " %'.3f %ss/op to previous", (double)diff_to_previous / (double)loops, unit);

	} else {

		baseline = diff;

	}



	fputc('\n', fp);



	previous = diff;



	return printed + 1;

}