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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: Beau Belgrave <beaub@linux.microsoft.com>
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: sunliming <sunliming@kylinos.cn>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
This commit is contained in:
sunliming 2023-06-06 14:20:26 +08:00 committed by Steven Rostedt (Google)
parent 3e7269dd5f
commit 4b56c21b11
1 changed files with 29 additions and 0 deletions
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29
tools/testing/selftests/user_events/perf_test.c
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@ -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) {