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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 02/36] vmlinux.lds.h: move BOUNDED_SECTION_* macros to reuse later
Date: Wed,  8 Apr 2026 14:01:37 -0600	[thread overview]
Message-ID: <20260408200211.43821-3-jim.cromie@gmail.com> (raw)
In-Reply-To: <20260408200211.43821-1-jim.cromie@gmail.com>

Move BOUNDED_SECTION_* macros to a new helper file:
include/asm-generic/bounded_sections.lds.h
and include it back into vmlinux.lds.h

This allows its reuse later to fix a future problem with modules
failing to keep dyndbg sections in some circumstances.

Signed-off-by: Jim Cromie <jim.cromie@gmail.com>
---
 include/asm-generic/bounded_sections.lds.h | 36 ++++++++++++++++++++++
 include/asm-generic/vmlinux.lds.h          | 32 +------------------
 2 files changed, 37 insertions(+), 31 deletions(-)
 create mode 100644 include/asm-generic/bounded_sections.lds.h

diff --git a/include/asm-generic/bounded_sections.lds.h b/include/asm-generic/bounded_sections.lds.h
new file mode 100644
index 000000000000..280a893bbe29
--- /dev/null
+++ b/include/asm-generic/bounded_sections.lds.h
@@ -0,0 +1,36 @@
+#ifndef _ASM_GENERIC_BOUNDED_SECTIONS_H
+#define _ASM_GENERIC_BOUNDED_SECTIONS_H
+
+#define BOUNDED_SECTION_PRE_LABEL(_sec_, _label_, _BEGIN_, _END_)	\
+	. = ALIGN(8);							\
+	_BEGIN_##_label_ = .;						\
+	KEEP(*(_sec_))							\
+	_END_##_label_ = .;
+
+#define BOUNDED_SECTION_POST_LABEL(_sec_, _label_, _BEGIN_, _END_)	\
+	. = ALIGN(8);							\
+	_label_##_BEGIN_ = .;						\
+	KEEP(*(_sec_))							\
+	_label_##_END_ = .;
+
+#define BOUNDED_SECTION_BY(_sec_, _label_)				\
+	BOUNDED_SECTION_PRE_LABEL(_sec_, _label_, __start, __stop)
+
+#define BOUNDED_SECTION(_sec)	 BOUNDED_SECTION_BY(_sec, _sec)
+
+#define HEADERED_SECTION_PRE_LABEL(_sec_, _label_, _BEGIN_, _END_, _HDR_) \
+	_HDR_##_label_	= .;						\
+	KEEP(*(.gnu.linkonce.##_sec_))					\
+	BOUNDED_SECTION_PRE_LABEL(_sec_, _label_, _BEGIN_, _END_)
+
+#define HEADERED_SECTION_POST_LABEL(_sec_, _label_, _BEGIN_, _END_, _HDR_) \
+	_label_##_HDR_ = .;						\
+	KEEP(*(.gnu.linkonce.##_sec_))					\
+	BOUNDED_SECTION_POST_LABEL(_sec_, _label_, _BEGIN_, _END_)
+
+#define HEADERED_SECTION_BY(_sec_, _label_)				\
+	HEADERED_SECTION_PRE_LABEL(_sec_, _label_, __start, __stop)
+
+#define HEADERED_SECTION(_sec)	 HEADERED_SECTION_BY(_sec, _sec)
+
+#endif /* _ASM_GENERIC_BOUNDED_SECTIONS_H */
diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
index 58daa551420b..462f124ad457 100644
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -211,37 +211,7 @@
 # endif
 #endif
 
-#define BOUNDED_SECTION_PRE_LABEL(_sec_, _label_, _BEGIN_, _END_)	\
-	. = ALIGN(8);							\
-	_BEGIN_##_label_ = .;						\
-	KEEP(*(_sec_))							\
-	_END_##_label_ = .;
-
-#define BOUNDED_SECTION_POST_LABEL(_sec_, _label_, _BEGIN_, _END_)	\
-	. = ALIGN(8);							\
-	_label_##_BEGIN_ = .;						\
-	KEEP(*(_sec_))							\
-	_label_##_END_ = .;
-
-#define BOUNDED_SECTION_BY(_sec_, _label_)				\
-	BOUNDED_SECTION_PRE_LABEL(_sec_, _label_, __start, __stop)
-
-#define BOUNDED_SECTION(_sec)	 BOUNDED_SECTION_BY(_sec, _sec)
-
-#define HEADERED_SECTION_PRE_LABEL(_sec_, _label_, _BEGIN_, _END_, _HDR_) \
-	_HDR_##_label_	= .;						\
-	KEEP(*(.gnu.linkonce.##_sec_))					\
-	BOUNDED_SECTION_PRE_LABEL(_sec_, _label_, _BEGIN_, _END_)
-
-#define HEADERED_SECTION_POST_LABEL(_sec_, _label_, _BEGIN_, _END_, _HDR_) \
-	_label_##_HDR_ = .;						\
-	KEEP(*(.gnu.linkonce.##_sec_))					\
-	BOUNDED_SECTION_POST_LABEL(_sec_, _label_, _BEGIN_, _END_)
-
-#define HEADERED_SECTION_BY(_sec_, _label_)				\
-	HEADERED_SECTION_PRE_LABEL(_sec_, _label_, __start, __stop)
-
-#define HEADERED_SECTION(_sec)	 HEADERED_SECTION_BY(_sec, _sec)
+#include <asm-generic/bounded_sections.lds.h>
 
 #ifdef CONFIG_TRACE_BRANCH_PROFILING
 #define LIKELY_PROFILE()						\
-- 
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 ` Jim Cromie [this message]
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 ` [PATCH v13 06/36] dyndbg: add stub macro for DECLARE_DYNDBG_CLASSMAP Jim Cromie
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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