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From: Jim Cromie <jim.cromie@gmail.com>
To: linux-kernel@vger.kernel.org
Cc: gregkh@linuxfoundation.org, jbaron@akamai.com,
	louis.chauvet@bootlin.com, Jim Cromie <jim.cromie@gmail.com>
Subject: [PATCH v13 06/36] dyndbg: add stub macro for DECLARE_DYNDBG_CLASSMAP
Date: Wed,  8 Apr 2026 14:01:41 -0600	[thread overview]
Message-ID: <20260408200211.43821-7-jim.cromie@gmail.com> (raw)
In-Reply-To: <20260408200211.43821-1-jim.cromie@gmail.com>

Add the stub macro for !DYNAMIC_DEBUG builds, after moving the
original macro-defn down under the big ifdef.  Do it now so future
changes have a cleaner starting point.

Signed-off-by: Jim Cromie <jim.cromie@gmail.com>
---
 include/linux/dynamic_debug.h | 43 ++++++++++++++++++-----------------
 1 file changed, 22 insertions(+), 21 deletions(-)

diff --git a/include/linux/dynamic_debug.h b/include/linux/dynamic_debug.h
index 05743900a116..a10adac8e8f0 100644
--- a/include/linux/dynamic_debug.h
+++ b/include/linux/dynamic_debug.h
@@ -93,27 +93,6 @@ struct ddebug_class_map {
 	enum class_map_type map_type;
 };
 
-/**
- * DECLARE_DYNDBG_CLASSMAP - declare classnames known by a module
- * @_var:   a struct ddebug_class_map, passed to module_param_cb
- * @_type:  enum class_map_type, chooses bits/verbose, numeric/symbolic
- * @_base:  offset of 1st class-name. splits .class_id space
- * @classes: class-names used to control class'd prdbgs
- */
-#define DECLARE_DYNDBG_CLASSMAP(_var, _maptype, _base, ...)		\
-	static const char *_var##_classnames[] = { __VA_ARGS__ };	\
-	static struct ddebug_class_map __aligned(8) __used		\
-		__section("__dyndbg_classes") _var = {			\
-		.mod = THIS_MODULE,					\
-		.mod_name = KBUILD_MODNAME,				\
-		.base = _base,						\
-		.map_type = _maptype,					\
-		.length = NUM_TYPE_ARGS(char*, __VA_ARGS__),		\
-		.class_names = _var##_classnames,			\
-	}
-#define NUM_TYPE_ARGS(eltype, ...)				\
-        (sizeof((eltype[]){__VA_ARGS__}) / sizeof(eltype))
-
 /* encapsulate linker provided built-in (or module) dyndbg data */
 struct _ddebug_info {
 	struct _ddebug *descs;
@@ -138,6 +117,27 @@ struct ddebug_class_param {
 #if defined(CONFIG_DYNAMIC_DEBUG) || \
 	(defined(CONFIG_DYNAMIC_DEBUG_CORE) && defined(DYNAMIC_DEBUG_MODULE))
 
+/**
+ * DECLARE_DYNDBG_CLASSMAP - declare classnames known by a module
+ * @_var:   a struct ddebug_class_map, passed to module_param_cb
+ * @_type:  enum class_map_type, chooses bits/verbose, numeric/symbolic
+ * @_base:  offset of 1st class-name. splits .class_id space
+ * @classes: class-names used to control class'd prdbgs
+ */
+#define DECLARE_DYNDBG_CLASSMAP(_var, _maptype, _base, ...)		\
+	static const char *_var##_classnames[] = { __VA_ARGS__ };	\
+	static struct ddebug_class_map __aligned(8) __used		\
+		__section("__dyndbg_classes") _var = {			\
+		.mod = THIS_MODULE,					\
+		.mod_name = KBUILD_MODNAME,				\
+		.base = _base,						\
+		.map_type = _maptype,					\
+		.length = NUM_TYPE_ARGS(char*, __VA_ARGS__),		\
+		.class_names = _var##_classnames,			\
+	}
+#define NUM_TYPE_ARGS(eltype, ...)				\
+	(sizeof((eltype[]) {__VA_ARGS__}) / sizeof(eltype))
+
 extern __printf(2, 3)
 void __dynamic_pr_debug(struct _ddebug *descriptor, const char *fmt, ...);
 
@@ -314,6 +314,7 @@ void __dynamic_ibdev_dbg(struct _ddebug *descriptor,
 
 #define DEFINE_DYNAMIC_DEBUG_METADATA(name, fmt)
 #define DYNAMIC_DEBUG_BRANCH(descriptor) false
+#define DECLARE_DYNDBG_CLASSMAP(...)
 
 #define dynamic_pr_debug(fmt, ...)					\
 	no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
-- 
2.53.0


  parent reply	other threads:[~2026-04-08 20:02 UTC|newest]

Thread overview: 37+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-04-08 20:01 [PATCH v13 00/36] fix dynamic-debug classmaps regression for DRM Jim Cromie
2026-04-08 20:01 ` [PATCH v13 01/36] dyndbg: fix NULL ptr on i386 due to section mis-alignment Jim Cromie
2026-04-08 20:01 ` [PATCH v13 02/36] vmlinux.lds.h: move BOUNDED_SECTION_* macros to reuse later Jim Cromie
2026-04-08 20:01 ` [PATCH v13 03/36] dyndbg.lds.S: fix lost dyndbg sections in modules Jim Cromie
2026-04-08 20:01 ` [PATCH v13 04/36] vmlinux.lds.h: drop unused HEADERED_SECTION* macros Jim Cromie
2026-04-08 20:01 ` [PATCH v13 05/36] dyndbg: factor ddebug_match_desc out from ddebug_change Jim Cromie
2026-04-08 20:01 ` Jim Cromie [this message]
2026-04-08 20:01 ` [PATCH v13 07/36] docs/dyndbg: update examples \012 to \n Jim Cromie
2026-04-08 20:01 ` [PATCH v13 08/36] docs/dyndbg: explain flags parse 1st Jim Cromie
2026-04-08 20:01 ` [PATCH v13 09/36] test-dyndbg: fixup CLASSMAP usage error Jim Cromie
2026-04-08 20:01 ` [PATCH v13 10/36] dyndbg: reword "class unknown," to "class:_UNKNOWN_" Jim Cromie
2026-04-08 20:01 ` [PATCH v13 11/36] dyndbg: make ddebug_class_param union members same size Jim Cromie
2026-04-08 20:01 ` [PATCH v13 12/36] dyndbg: drop NUM_TYPE_ARRAY Jim Cromie
2026-04-08 20:01 ` [PATCH v13 13/36] dyndbg: tweak pr_fmt to avoid expansion conflicts Jim Cromie
2026-04-08 20:01 ` [PATCH v13 14/36] dyndbg: reduce verbose/debug clutter Jim Cromie
2026-04-08 20:01 ` [PATCH v13 15/36] dyndbg: refactor param_set_dyndbg_classes and below Jim Cromie
2026-04-08 20:01 ` [PATCH v13 16/36] dyndbg: tighten fn-sig of ddebug_apply_class_bitmap Jim Cromie
2026-04-08 20:01 ` [PATCH v13 17/36] dyndbg: replace classmap list with a vector Jim Cromie
2026-04-08 20:01 ` [PATCH v13 18/36] dyndbg: macrofy a 2-index for-loop pattern Jim Cromie
2026-04-08 20:01 ` [PATCH v13 19/36] dyndbg,module: make proper substructs in _ddebug_info Jim Cromie
2026-04-08 20:01 ` [PATCH v13 20/36] dyndbg: move mod_name down from struct ddebug_table to _ddebug_info Jim Cromie
2026-04-08 20:01 ` [PATCH v13 21/36] dyndbg: hoist classmap-filter-by-modname up to ddebug_add_module Jim Cromie
2026-04-08 20:01 ` [PATCH v13 22/36] dyndbg-API: remove DD_CLASS_TYPE_(DISJOINT|LEVEL)_NAMES and code Jim Cromie
2026-04-08 20:01 ` [PATCH v13 23/36] selftests-dyndbg: add a dynamic_debug run_tests target Jim Cromie
2026-04-08 20:01 ` [PATCH v13 24/36] dyndbg: change __dynamic_func_call_cls* macros into expressions Jim Cromie
2026-04-08 20:02 ` [PATCH v13 25/36] dyndbg-API: replace DECLARE_DYNDBG_CLASSMAP Jim Cromie
2026-04-08 20:02 ` [PATCH v13 26/36] dyndbg: detect class_id reservation conflicts Jim Cromie
2026-04-08 20:02 ` [PATCH v13 27/36] dyndbg: check DYNAMIC_DEBUG_CLASSMAP_{DEFINE,USE_} args at compile-time Jim Cromie
2026-04-08 20:02 ` [PATCH v13 28/36] dyndbg-test: change do_prints testpoint to accept a loopct Jim Cromie
2026-04-08 20:02 ` [PATCH v13 29/36] dyndbg-API: promote DYNAMIC_DEBUG_CLASSMAP_PARAM to API Jim Cromie
2026-04-08 20:02 ` [PATCH v13 30/36] dyndbg: treat comma as a token separator Jim Cromie
2026-04-08 20:02 ` [PATCH v13 31/36] dyndbg: split multi-query strings with % Jim Cromie
2026-04-08 20:02 ` [PATCH v13 32/36] selftests-dyndbg: add test_mod_submod Jim Cromie
2026-04-08 20:02 ` [PATCH v13 33/36] dyndbg: resolve "protection" of class'd pr_debug Jim Cromie
2026-04-08 20:02 ` [PATCH v13 34/36] dyndbg: harden classmap and descriptor validation Jim Cromie
2026-04-08 20:02 ` [PATCH v13 35/36] docs/dyndbg: add classmap info to howto Jim Cromie
2026-04-08 20:02 ` [PATCH v13 36/36] dyndbg: Ignore additional arguments from pr_fmt Jim Cromie

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