[PATCH v2 18/20] test-dyndbg: tune sub-module behavior

From: Jim Cromie
Date: Fri Jan 13 2023 - 14:33:00 EST


lib/test_dynamic_debug.c is used to build 2 modules:
test_dynamic_debug.ko and test_dynamic_debug_submod.ko

Define DEBUG only in the main module, not in the submod. Its purpose
is to insure that prdbgs are enabled by default, so that a modprobe
without params actually logs something, showing that compile-time
enablement works. This doesn't need to be repeated in the submodule.

Rather, the submodule's purpose is to prove that classmaps defined and
exported from a parent module are propagated to submodules, setting
their class'd debugs accordingly.

Signed-off-by: Jim Cromie <jim.cromie@xxxxxxxxx>
---
lib/test_dynamic_debug.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/lib/test_dynamic_debug.c b/lib/test_dynamic_debug.c
index 9e66c5a7e138..94fe3b3438d0 100644
--- a/lib/test_dynamic_debug.c
+++ b/lib/test_dynamic_debug.c
@@ -6,13 +6,13 @@
* Jim Cromie <jim.cromie@xxxxxxxxx>
*/

-#if defined(TEST_DYNAMIC_DEBUG_SUBMOD)
- #define pr_fmt(fmt) "test_dd_submod: " fmt
-#else
+#if !defined(TEST_DYNAMIC_DEBUG_SUBMOD)
#define pr_fmt(fmt) "test_dd: " fmt
+ #define DEBUG /* enable all prdbgs (plain & class'd) at compiletime */
+#else
+ #define pr_fmt(fmt) "test_dd_submod: " fmt
#endif

-#define DEBUG /* enable all prdbgs (plain & class'd) at compiletime */

#include <linux/module.h>

--
2.39.0