[PATCH v4 03/19] selftests/resctrl: Unmount resctrl FS if child fails to run benchmark

From: Ilpo Järvinen
Date: Thu Jul 13 2023 - 09:21:01 EST


A child calls PARENT_EXIT() when it fails to run a benchmark to kill
the parent process. PARENT_EXIT() lacks unmount for the resctrl FS and
the parent won't be there to unmount it either after it gets killed.

Add the resctrl FS unmount also to PARENT_EXIT().

Fixes: 591a6e8588fc ("selftests/resctrl: Add basic resctrl file system operations and data")
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@xxxxxxxxxxxxxxx>
---
tools/testing/selftests/resctrl/resctrl.h | 1 +
1 file changed, 1 insertion(+)

diff --git a/tools/testing/selftests/resctrl/resctrl.h b/tools/testing/selftests/resctrl/resctrl.h
index 87e39456dee0..f455f0b7e314 100644
--- a/tools/testing/selftests/resctrl/resctrl.h
+++ b/tools/testing/selftests/resctrl/resctrl.h
@@ -43,6 +43,7 @@
do { \
perror(err_msg); \
kill(ppid, SIGKILL); \
+ umount_resctrlfs(); \
exit(EXIT_FAILURE); \
} while (0)

--
2.30.2