| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
|---|---|
| 2 | #include <pthread.h> |
| 3 | #include <stdlib.h> |
| 4 | #include <signal.h> |
| 5 | #include <unistd.h> |
| 6 | #include <linux/compiler.h> |
| 7 | #include "../tests.h" |
| 8 | |
| 9 | static volatile sig_atomic_t done; |
| 10 | |
| 11 | /* We want to check this symbol in perf report */ |
| 12 | noinline void test_loop(void); |
| 13 | |
| 14 | static void sighandler(int sig __maybe_unused) |
| 15 | { |
| 16 | done = 1; |
| 17 | } |
| 18 | |
| 19 | noinline void test_loop(void) |
| 20 | { |
| 21 | while (!done); |
| 22 | } |
| 23 | |
| 24 | static void *thfunc(void *arg) |
| 25 | { |
| 26 | void (*loop_fn)(void) = arg; |
| 27 | |
| 28 | loop_fn(); |
| 29 | return NULL; |
| 30 | } |
| 31 | |
| 32 | static int thloop(int argc, const char **argv) |
| 33 | { |
| 34 | int sec = 1; |
| 35 | pthread_t th; |
| 36 | |
| 37 | if (argc > 0) |
| 38 | sec = atoi(argv[0]); |
| 39 | |
| 40 | signal(SIGINT, sighandler); |
| 41 | signal(SIGALRM, sighandler); |
| 42 | alarm(sec); |
| 43 | |
| 44 | pthread_create(&th, NULL, thfunc, test_loop); |
| 45 | test_loop(); |
| 46 | pthread_join(th, NULL); |
| 47 | |
| 48 | return 0; |
| 49 | } |
| 50 | |
| 51 | DEFINE_WORKLOAD(thloop); |
| 52 |