Commit 4b56c21b authored by sunliming's avatar sunliming Committed by Steven Rostedt (Google)
Browse files

selftests/user_events: Clear the events after perf self-test 

When the self test is completed, perf self-test left the user events not to
be cleared. Clear the events by unregister and delete the event.

Link: https://lkml.kernel.org/r/20230606062027.1008398-4-sunliming@kylinos.cn



Acked-by: default avatarBeau Belgrave <beaub@linux.microsoft.com>
Acked-by: default avatarMasami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: default avatarsunliming <sunliming@kylinos.cn>
Signed-off-by: default avatarSteven Rostedt (Google) <rostedt@goodmis.org>
parent 3e7269dd

tools/testing/selftests/user_events/perf_test.c

+29 −0
Original line number Diff line number Diff line
@@ -81,6 +81,32 @@ static int get_offset(void) 
	return offset;

}



static int clear(int *check)

{

	struct user_unreg unreg = {0};



	unreg.size = sizeof(unreg);

	unreg.disable_bit = 31;

	unreg.disable_addr = (__u64)check;



	int fd = open(data_file, O_RDWR);



	if (fd == -1)

		return -1;



	if (ioctl(fd, DIAG_IOCSUNREG, &unreg) == -1)

		if (errno != ENOENT)

			return -1;



	if (ioctl(fd, DIAG_IOCSDEL, "__test_event") == -1)

		if (errno != ENOENT)

			return -1;



	close(fd);



	return 0;

}



FIXTURE(user) {

	int data_fd;

	int check;
@@ -93,6 +119,9 @@ FIXTURE_SETUP(user) { 


FIXTURE_TEARDOWN(user) {

	close(self->data_fd);



	if (clear(&self->check) != 0)

		printf("WARNING: Clear didn't work!\n");

}



TEST_F(user, perf_write) {