1/* SPDX-License-Identifier: GPL-2.0 */
2#include <stdlib.h>
3#include "../tests.h"
4
5#define BENCH_RUNS 999999
6
7static volatile int cnt;
8
9static void brstack_bar(void) {
10} /* return */
11
12static void brstack_foo(void) {
13 brstack_bar(); /* call */
14} /* return */
15
16static void brstack_bench(void) {
17 void (*brstack_foo_ind)(void) = brstack_foo;
18
19 if ((cnt++) % 3) /* branch (cond) */
20 brstack_foo(); /* call */
21 brstack_bar(); /* call */
22 brstack_foo_ind(); /* call (ind) */
23}
24
25static int brstack(int argc, const char **argv)
26{
27 int num_loops = BENCH_RUNS;
28
29 if (argc > 0)
30 num_loops = atoi(argv[0]);
31
32 while (1) {
33 if ((cnt++) > num_loops)
34 break;
35 brstack_bench();/* call */
36 } /* branch (uncond) */
37 return 0;
38}
39
40DEFINE_WORKLOAD(brstack);
41

source code of linux/tools/perf/tests/workloads/brstack.c