perf bench uprobe: Add benchmark to test uprobe overhead

This just adds the initial "workload", a call to libc's usleep(1000us)
function:

  $ perf stat --null perf bench uprobe all
  # Running uprobe/baseline benchmark...
  # Executed 1000 usleep(1000) calls
       Total time: 1053533 usecs

   1053.533 usecs/op

   Performance counter stats for 'perf bench uprobe all':

         1.061042896 seconds time elapsed

         0.001079000 seconds user
         0.006499000 seconds sys

  $

More entries will be added using a BPF skel to add various uprobes to
the usleep() function.

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/20230719204910.539044-2-acme@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/tools/perf/builtin-bench.c b/tools/perf/builtin-bench.c
index db435b791a09..09637aee8341 100644
--- a/tools/perf/builtin-bench.c
+++ b/tools/perf/builtin-bench.c
@@ -104,6 +104,11 @@ static struct bench breakpoint_benchmarks[] = {
 	{ NULL,	NULL, NULL },
 };
 
+static struct bench uprobe_benchmarks[] = {
+	{ "baseline",	"Baseline libc usleep(1000) call",	bench_uprobe_baseline,	},
+	{ NULL,	NULL, NULL },
+};
+
 struct collection {
 	const char	*name;
 	const char	*summary;
@@ -123,6 +128,7 @@ static struct collection collections[] = {
 #endif
 	{ "internals",	"Perf-internals benchmarks",			internals_benchmarks	},
 	{ "breakpoint",	"Breakpoint benchmarks",			breakpoint_benchmarks	},
+	{ "uprobe",	"uprobe benchmarks",				uprobe_benchmarks	},
 	{ "all",	"All benchmarks",				NULL			},
 	{ NULL,		NULL,						NULL			}
 };