From: Jim Cromie <jim.cromie@gmail.com>
To: Andrew Morton <akpm@linux-foundation.org>,
Jason Baron <jbaron@akamai.com>,
Luis Chamberlain <mcgrof@kernel.org>,
Petr Pavlu <petr.pavlu@suse.com>,
Daniel Gomez <da.gomez@kernel.org>,
Sami Tolvanen <samitolvanen@google.com>,
Aaron Tomlin <atomlin@atomlin.com>,
Shuah Khan <shuah@kernel.org>,
Louis Chauvet <louis.chauvet@bootlin.com>
Cc: linux-kernel@vger.kernel.org, linux-modules@vger.kernel.org,
linux-kselftest@vger.kernel.org,
Jim Cromie <jim.cromie@gmail.com>
Subject: [PATCH 02/17] dyndbg: add stub macro for DECLARE_DYNDBG_CLASSMAP
Date: Mon, 04 May 2026 14:45:08 -0600 [thread overview]
Message-ID: <20260504-dd-cleanups-2-v1-2-6fdd24040642@gmail.com> (raw)
In-Reply-To: <20260504-dd-cleanups-2-v1-0-6fdd24040642@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__)
--
2.54.0
next prev parent reply other threads:[~2026-05-04 20:45 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-04 20:45 [PATCH 00/17] dynamic-debug cleanups refactors maintenance Jim Cromie
2026-05-04 20:45 ` [PATCH 01/17] dyndbg: factor ddebug_match_desc out from ddebug_change Jim Cromie
2026-05-04 20:45 ` Jim Cromie [this message]
2026-05-04 20:45 ` [PATCH 03/17] dyndbg: reword "class unknown," to "class:_UNKNOWN_" Jim Cromie
2026-05-04 20:45 ` [PATCH 04/17] dyndbg: make ddebug_class_param union members same size Jim Cromie
2026-05-04 20:45 ` [PATCH 05/17] dyndbg: drop NUM_TYPE_ARRAY Jim Cromie
2026-05-04 20:45 ` [PATCH 06/17] dyndbg: tweak pr_fmt to avoid expansion conflicts Jim Cromie
2026-05-04 20:45 ` [PATCH 07/17] dyndbg: reduce verbose/debug clutter Jim Cromie
2026-05-04 20:45 ` [PATCH 08/17] dyndbg: refactor param_set_dyndbg_classes and below Jim Cromie
2026-05-04 20:45 ` [PATCH 09/17] dyndbg: tighten fn-sig of ddebug_apply_class_bitmap Jim Cromie
2026-05-04 20:45 ` [PATCH 10/17] dyndbg: replace classmap list with a vector Jim Cromie
2026-05-04 20:45 ` [PATCH 11/17] dyndbg: macrofy a 2-index for-loop pattern Jim Cromie
2026-05-04 20:45 ` [PATCH 12/17] dyndbg,module: make proper substructs in _ddebug_info Jim Cromie
2026-05-05 8:05 ` Petr Pavlu
2026-05-04 20:45 ` [PATCH 13/17] dyndbg: move mod_name down from struct ddebug_table to _ddebug_info Jim Cromie
2026-05-04 20:45 ` [PATCH 14/17] dyndbg: hoist classmap-filter-by-modname up to ddebug_add_module Jim Cromie
2026-05-04 20:45 ` [PATCH 15/17] dyndbg-API: remove DD_CLASS_TYPE_(DISJOINT|LEVEL)_NAMES and code Jim Cromie
2026-05-04 20:45 ` [PATCH 16/17] selftests-dyndbg: add a dynamic_debug run_tests target Jim Cromie
2026-05-04 20:45 ` [PATCH 17/17] dyndbg: change __dynamic_func_call_cls* macros into expressions Jim Cromie
2026-05-09 1:40 ` [PATCH 00/17] dynamic-debug cleanups refactors maintenance Andrew Morton
2026-05-09 2:01 ` Andrew Morton
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