diff options
Diffstat (limited to 'tools/perf/tests/workloads/thloop.c')
-rw-r--r-- | tools/perf/tests/workloads/thloop.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/tools/perf/tests/workloads/thloop.c b/tools/perf/tests/workloads/thloop.c new file mode 100644 index 000000000000..457b29f91c3e --- /dev/null +++ b/tools/perf/tests/workloads/thloop.c @@ -0,0 +1,51 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#include <pthread.h> +#include <stdlib.h> +#include <signal.h> +#include <unistd.h> +#include <linux/compiler.h> +#include "../tests.h" + +static volatile sig_atomic_t done; + +/* We want to check this symbol in perf report */ +noinline void test_loop(void); + +static void sighandler(int sig __maybe_unused) +{ + done = 1; +} + +noinline void test_loop(void) +{ + while (!done); +} + +static void *thfunc(void *arg) +{ + void (*loop_fn)(void) = arg; + + loop_fn(); + return NULL; +} + +static int thloop(int argc, const char **argv) +{ + int sec = 1; + pthread_t th; + + if (argc > 0) + sec = atoi(argv[0]); + + signal(SIGINT, sighandler); + signal(SIGALRM, sighandler); + alarm(sec); + + pthread_create(&th, NULL, thfunc, test_loop); + test_loop(); + pthread_join(th, NULL); + + return 0; +} + +DEFINE_WORKLOAD(thloop); |