-v11 is here
https://lore.kernel.org/lkml/20260313132103.2529746-1-jim.cromie@gmail.com/
-v12 has a few changes:
vmlinux.lds.h is refactored:
- BOUNDED_SECTION* macros are pulled into bounded_section.lds.h
- dynamic-debug sections are factored into dyndbg.lds.h,
which reuses bounded_section.lds.h
- scripts/module.lds.S gets proper output sections for dyndbg
this fixes lost sections seen in some setups
- based upon codetag.lds.h
DYNAMIC_DEBUG_CLASSMAP_USE*() is refined:
- previous had static class-map decl and unique names
- now have extern'd <classname>-<usermod> names, matching 1-per-module model
- now with compile-time offset check
- _USE/_USE_ together allows more squashing
better modprobe-time classmap definition error detection:
- test descriptors for unknown class-names
- more complete class-map/user conflict detection
rebased onto -rc5
- applies cleanly to drm-misc-fixes
- passes a few more tests on DRM-CI
include patch from Philipp Hahn <phahn-oss@avm.de>
clean subsystem chunks
- dyndbg 1st
- drm - fixes for DRM-CI, adapt,use new API, un-BROKEN
- drm/accel - least mature, I have no HW
Jim Cromie (68):
dyndbg: fix NULL ptr on i386 due to section mis-alignment
vmlinux.lds.h: move BOUNDED_SECTION_* macros to reuse later
dyndbg.lds.S: fix lost dyndbg sections in modules
vmlinux.lds.h: drop unused HEADERED_SECTION* macros
dyndbg: factor ddebug_match_desc out from ddebug_change
dyndbg: add stub macro for DECLARE_DYNDBG_CLASSMAP
docs/dyndbg: update examples \012 to \n
docs/dyndbg: explain flags parse 1st
test-dyndbg: fixup CLASSMAP usage error
dyndbg: reword "class unknown," to "class:_UNKNOWN_"
dyndbg: make ddebug_class_param union members same size
dyndbg: drop NUM_TYPE_ARRAY
dyndbg: tweak pr_fmt to avoid expansion conflicts
dyndbg: reduce verbose/debug clutter
dyndbg: refactor param_set_dyndbg_classes and below
dyndbg: tighten fn-sig of ddebug_apply_class_bitmap
dyndbg: replace classmap list with a vector
dyndbg: macrofy a 2-index for-loop pattern
dyndbg,module: make proper substructs in _ddebug_info
dyndbg: move mod_name down from struct ddebug_table to _ddebug_info
dyndbg: hoist classmap-filter-by-modname up to ddebug_add_module
dyndbg-API: remove DD_CLASS_TYPE_(DISJOINT|LEVEL)_NAMES and code
selftests-dyndbg: add a dynamic_debug run_tests target
dyndbg: change __dynamic_func_call_cls* macros into expressions
dyndbg-API: replace DECLARE_DYNDBG_CLASSMAP
dyndbg: detect class_id reservation conflicts
dyndbg: check DYNAMIC_DEBUG_CLASSMAP_DEFINE args at compile-time
dyndbg-test: change do_prints testpoint to accept a loopct
dyndbg-API: promote DYNAMIC_DEBUG_CLASSMAP_PARAM to API
dyndbg: treat comma as a token separator
dyndbg: split multi-query strings with %
selftests-dyndbg: add test_mod_submod
dyndbg: resolve "protection" of class'd pr_debug
dyndbg: harden classmap and descriptor validation
docs/dyndbg: add classmap info to howto
dyndbg-test: verify DYNAMIC_DEBUG_CLASSMAP_USE_() compile-time CHECK
drm: use correct ccflags-y spelling
drm_buddy: fix power-of-2 rounding errs
drm_print: fix drm_printer dynamic debug bypass
drm_vblank: avoid bit-test when DRM_USE_DYNAMIC_DEBUG=y
drm-dyndbg: adapt drm core to use dyndbg classmaps-v2
drm-dyndbg: adapt DRM to invoke DYNAMIC_DEBUG_CLASSMAP_PARAM
drm_print: modernize an archaic comment
drm-dyndbg: DRM_CLASSMAP_USE in amdgpu driver
drm-dyndbg: DRM_CLASSMAP_USE in i915 driver
drm-dyndbg: DRM_CLASSMAP_USE in drm_crtc_helper
drm-dyndbg: DRM_CLASSMAP_USE in drm_dp_helper
drm-dyndbg: DRM_CLASSMAP_USE in nouveau
drm-dyndbg: add DRM_CLASSMAP_USE to Xe driver
drm-dyndbg: add DRM_CLASSMAP_USE to virtio_gpu
drm-dyndbg: add DRM_CLASSMAP_USE to simpledrm
drm-dyndbg: add DRM_CLASSMAP_USE to bochs
drm-dyndbg: add DRM_CLASSMAP_USE to etnaviv
drm-dyndbg: add DRM_CLASSMAP_USE to gma500 driver
drm-dyndbg: add DRM_CLASSMAP_USE to radeon
drm-dyndbg: add DRM_CLASSMAP_USE to vmwgfx driver
drm-dyndbg: add DRM_CLASSMAP_USE to vkms driver
drm-dyndbg: add DRM_CLASSMAP_USE to udl driver
drm-dyndbg: add DRM_CLASSMAP_USE to mgag200 driver
drm-dyndbg: add DRM_CLASSMAP_USE to the gud driver
drm-dyndbg: add DRM_CLASSMAP_USE to the qxl driver
drm-dyndbg: add DRM_CLASSMAP_USE to the drm_gem_shmem_helper driver
drm-dyndbg: restore CONFIG_DRM_USE_DYNAMIC_DEBUG un-BROKEN
drm-dyndbg: set CONFIG_DRM_USE_DYNAMIC_DEBUG=y
accel: add -DDYNAMIC_DEBUG_MODULE to subdir-ccflags
accel/ivpu: implement IVPU_DBG_* as a dyndbg classmap
accel/ethosu: call DRM_CLASSMAP_USE
accel/rocket: call DRM_CLASSMAP_USE
Philipp Hahn (1):
dyndbg: Ignore additional arguments from pr_fmt
.../admin-guide/dynamic-debug-howto.rst | 184 +++-
MAINTAINERS | 3 +-
drivers/accel/Makefile | 7 +-
drivers/accel/ethosu/ethosu_drv.c | 3 +
drivers/accel/ivpu/ivpu_drv.c | 27 +-
drivers/accel/ivpu/ivpu_drv.h | 45 +-
drivers/accel/rocket/rocket_gem.c | 2 +
drivers/gpu/drm/Kconfig.debug | 3 +-
drivers/gpu/drm/Makefile | 3 +-
drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 12 +-
drivers/gpu/drm/display/drm_dp_helper.c | 12 +-
drivers/gpu/drm/drm_buddy.c | 4 +-
drivers/gpu/drm/drm_crtc_helper.c | 12 +-
drivers/gpu/drm/drm_gem_shmem_helper.c | 1 +
drivers/gpu/drm/drm_print.c | 39 +-
drivers/gpu/drm/drm_vblank.c | 9 +-
drivers/gpu/drm/etnaviv/etnaviv_drv.c | 2 +
drivers/gpu/drm/gma500/psb_drv.c | 2 +
drivers/gpu/drm/gud/gud_drv.c | 2 +
drivers/gpu/drm/i915/i915_params.c | 12 +-
drivers/gpu/drm/mgag200/mgag200_drv.c | 2 +
drivers/gpu/drm/nouveau/nouveau_drm.c | 12 +-
drivers/gpu/drm/qxl/qxl_drv.c | 2 +
drivers/gpu/drm/radeon/radeon_drv.c | 2 +
drivers/gpu/drm/sysfb/simpledrm.c | 2 +
drivers/gpu/drm/tiny/bochs.c | 2 +
drivers/gpu/drm/udl/udl_main.c | 2 +
drivers/gpu/drm/virtio/virtgpu_drv.c | 2 +
drivers/gpu/drm/vkms/vkms_drv.c | 2 +
drivers/gpu/drm/vmwgfx/vmwgfx_drv.c | 2 +
drivers/gpu/drm/xe/xe_drm_client.c | 2 +
include/asm-generic/bounded_sections.lds.h | 21 +
include/asm-generic/dyndbg.lds.h | 26 +
include/asm-generic/vmlinux.lds.h | 48 +-
include/drm/drm_print.h | 22 +-
include/linux/dynamic_debug.h | 309 +++++--
kernel/module/main.c | 15 +-
lib/Kconfig.debug | 24 +-
lib/Makefile | 5 +
lib/dynamic_debug.c | 831 ++++++++++++------
lib/test_dynamic_debug.c | 211 +++--
lib/test_dynamic_debug_submod.c | 21 +
scripts/module.lds.S | 2 +
tools/testing/selftests/Makefile | 1 +
.../testing/selftests/dynamic_debug/Makefile | 9 +
tools/testing/selftests/dynamic_debug/config | 7 +
.../dynamic_debug/dyndbg_selftest.sh | 373 ++++++++
47 files changed, 1747 insertions(+), 594 deletions(-)
create mode 100644 include/asm-generic/bounded_sections.lds.h
create mode 100644 include/asm-generic/dyndbg.lds.h
create mode 100644 lib/test_dynamic_debug_submod.c
create mode 100644 tools/testing/selftests/dynamic_debug/Makefile
create mode 100644 tools/testing/selftests/dynamic_debug/config
create mode 100755 tools/testing/selftests/dynamic_debug/dyndbg_selftest.sh
--
2.53.0