[PATCH v5 1/3] selftests/resctrl: Add cleanup function to test framework

[Maciej Wieczor-Retman <maciej.wieczor-retman@xxxxxxxxx>]

Resctrl selftests use very similar functions to cleanup after
themselves. This creates a lot of code duplication. Also not being
hooked to the test framework means that ctrl-c handler isn't aware of
what test is currently running and executes all cleanups even though
only one is needed.

Add a function pointer to the resctrl_test struct and attach to it
cleanup functions from individual tests.

Signed-off-by: Maciej Wieczor-Retman <maciej.wieczor-retman@xxxxxxxxx>
Reviewed-by: Reinette Chatre <reinette.chatre@xxxxxxxxx>
---
Changelog v5:
- Rebased onto kselftests/next.
- Add Reinette's reviewed-by tag.

 tools/testing/selftests/resctrl/cat_test.c | 1 +
 tools/testing/selftests/resctrl/cmt_test.c | 1 +
 tools/testing/selftests/resctrl/mba_test.c | 1 +
 tools/testing/selftests/resctrl/mbm_test.c | 1 +
 tools/testing/selftests/resctrl/resctrl.h  | 2 ++
 5 files changed, 6 insertions(+)

diff --git a/tools/testing/selftests/resctrl/cat_test.c b/tools/testing/selftests/resctrl/cat_test.c
index 4cb991be8e31..8fa4348ab461 100644
--- a/tools/testing/selftests/resctrl/cat_test.c
+++ b/tools/testing/selftests/resctrl/cat_test.c
@@ -373,6 +373,7 @@ struct resctrl_test l3_cat_test = {
 	.resource = "L3",
 	.feature_check = test_resource_feature_check,
 	.run_test = cat_run_test,
+	.cleanup = cat_test_cleanup,
 };
 
 struct resctrl_test l3_noncont_cat_test = {
diff --git a/tools/testing/selftests/resctrl/cmt_test.c b/tools/testing/selftests/resctrl/cmt_test.c
index a81f91222a89..a01ccf86e6ce 100644
--- a/tools/testing/selftests/resctrl/cmt_test.c
+++ b/tools/testing/selftests/resctrl/cmt_test.c
@@ -178,4 +178,5 @@ struct resctrl_test cmt_test = {
 	.resource = "L3",
 	.feature_check = cmt_feature_check,
 	.run_test = cmt_run_test,
+	.cleanup = cmt_test_cleanup,
 };
diff --git a/tools/testing/selftests/resctrl/mba_test.c b/tools/testing/selftests/resctrl/mba_test.c
index 7946e32e85c8..189fbe20dc7b 100644
--- a/tools/testing/selftests/resctrl/mba_test.c
+++ b/tools/testing/selftests/resctrl/mba_test.c
@@ -180,4 +180,5 @@ struct resctrl_test mba_test = {
 	.vendor_specific = ARCH_INTEL,
 	.feature_check = mba_feature_check,
 	.run_test = mba_run_test,
+	.cleanup = mba_test_cleanup,
 };
diff --git a/tools/testing/selftests/resctrl/mbm_test.c b/tools/testing/selftests/resctrl/mbm_test.c
index d67ffa3ec63a..73d6a8b989f5 100644
--- a/tools/testing/selftests/resctrl/mbm_test.c
+++ b/tools/testing/selftests/resctrl/mbm_test.c
@@ -150,4 +150,5 @@ struct resctrl_test mbm_test = {
 	.vendor_specific = ARCH_INTEL,
 	.feature_check = mbm_feature_check,
 	.run_test = mbm_run_test,
+	.cleanup = mbm_test_cleanup,
 };
diff --git a/tools/testing/selftests/resctrl/resctrl.h b/tools/testing/selftests/resctrl/resctrl.h
index 2051bd135e0d..221c94532733 100644
--- a/tools/testing/selftests/resctrl/resctrl.h
+++ b/tools/testing/selftests/resctrl/resctrl.h
@@ -72,6 +72,7 @@ struct user_params {
  * @disabled:		Test is disabled
  * @feature_check:	Callback to check required resctrl features
  * @run_test:		Callback to run the test
+ * @cleanup:		Callback to cleanup after the test
  */
 struct resctrl_test {
 	const char	*name;
@@ -82,6 +83,7 @@ struct resctrl_test {
 	bool		(*feature_check)(const struct resctrl_test *test);
 	int		(*run_test)(const struct resctrl_test *test,
 				    const struct user_params *uparams);
+	void		(*cleanup)(void);
 };
 
 /*
-- 
2.43.2