aboutsummaryrefslogtreecommitdiffstatshomepage
path: root/tools/perf/tests/workloads/thloop.c
diff options
context:
space:
mode:
Diffstat (limited to 'tools/perf/tests/workloads/thloop.c')
-rw-r--r--tools/perf/tests/workloads/thloop.c51
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);