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authorJohn Stultz <john.stultz@linaro.org>2015-03-11 17:39:58 -0700
committerShuah Khan <shuahkh@osg.samsung.com>2015-03-12 13:22:12 -0600
commit2430ec652dd67243484c90fe34a4433622fc2a30 (patch)
tree5ed2cae69531e7e905d98bbc9d04eb044132a05e
parentselftests/timers: Cleanup Makefile to make it easier to add future tests (diff)
downloadlinux-dev-2430ec652dd67243484c90fe34a4433622fc2a30.tar.xz
linux-dev-2430ec652dd67243484c90fe34a4433622fc2a30.zip
selftests/timers: Quiet warning due to lack of return check on brk
The posix_timers.c test has a loop that tries to keep it in kernel space, repeatedly calling brk(). However, it doesn't check the return value, which causes warnings. This patch adds a err value which captures the return value and modifies the test so it will quit if a failure occurs. Cc: Shuah Khan <shuahkh@osg.samsung.com> Cc: Prarit Bhargava <prarit@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Richard Cochran <richardcochran@gmail.com> Signed-off-by: John Stultz <john.stultz@linaro.org> Tested-by: Prarit Bhargava <prarit@redhat.com> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
-rw-r--r--tools/testing/selftests/timers/posix_timers.c9
1 files changed, 4 insertions, 5 deletions
diff --git a/tools/testing/selftests/timers/posix_timers.c b/tools/testing/selftests/timers/posix_timers.c
index f87d970a485c..5a246a02dff3 100644
--- a/tools/testing/selftests/timers/posix_timers.c
+++ b/tools/testing/selftests/timers/posix_timers.c
@@ -35,10 +35,11 @@ static void user_loop(void)
static void kernel_loop(void)
{
void *addr = sbrk(0);
+ int err = 0;
- while (!done) {
- brk(addr + 4096);
- brk(addr);
+ while (!done && !err) {
+ err = brk(addr + 4096);
+ err |= brk(addr);
}
}
@@ -190,8 +191,6 @@ static int check_timer_create(int which)
int main(int argc, char **argv)
{
- int err;
-
printf("Testing posix timers. False negative may happen on CPU execution \n");
printf("based timers if other threads run on the CPU...\n");