tools/perf/tests/workloads/brstack.c

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #include <stdlib.h>
   3 #include "../tests.h"
   4
   5 #define BENCH_RUNS 999999
   6
   7 static volatile int cnt;
   8
   9 static void brstack_bar(void) {
  10 }                               /* return */
  11
  12 static void brstack_foo(void) {
  13         brstack_bar();          /* call */
  14 }                               /* return */
  15
  16 static 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
  25 static 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
  40 DEFINE_WORKLOAD(brstack);