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| author |   Jim Cromie <jim.cromie@gmail.com> | 2022-09-04 15:40:52 -0600 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-09-07 17:04:49 +0200 |
| commit | 66f4006b6ace1a1a1a1dca4225972f79a298e251 (patch) | |
| tree | 319930012fddae2c0f0b086de2cfdf8aa973a4d6 /include/asm-generic | |
| parent | dyndbg: add DECLARE_DYNDBG_CLASSMAP macro (diff) | |
| download | linux-dev-66f4006b6ace1a1a1a1dca4225972f79a298e251.tar.xz linux-dev-66f4006b6ace1a1a1a1dca4225972f79a298e251.zip | |
kernel/module: add __dyndbg_classes section
Add __dyndbg_classes section, using __dyndbg as a model. Use it:
vmlinux.lds.h:
KEEP the new section, which also silences orphan section warning on
loadable modules. Add (__start_/__stop_)__dyndbg_classes linker
symbols for the c externs (below).
kernel/module/main.c:
- fill new fields in find_module_sections(), using section_objs()
- extend callchain prototypes
to pass classes, length
load_module(): pass new info to dynamic_debug_setup()
dynamic_debug_setup(): new params, pass through to ddebug_add_module()
dynamic_debug.c:
- add externs to the linker symbols.
ddebug_add_module():
- It currently builds a debug_table, and *will* find and attach classes.
dynamic_debug_init():
- add class fields to the _ddebug_info cursor var: di.
Signed-off-by: Jim Cromie <jim.cromie@gmail.com>
Link: https://lore.kernel.org/r/20220904214134.408619-16-jim.cromie@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/asm-generic')
| -rw-r--r-- | include/asm-generic/vmlinux.lds.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h index 7515a465ec03..9b8bd5504ad9 100644 --- a/include/asm-generic/vmlinux.lds.h +++ b/include/asm-generic/vmlinux.lds.h @@ -345,6 +345,9 @@ *(__tracepoints) \ /* implement dynamic printk debug */ \ . = ALIGN(8); \ + __start___dyndbg_classes = .; \ + KEEP(*(__dyndbg_classes)) \ + __stop___dyndbg_classes = .; \ __start___dyndbg = .; \ KEEP(*(__dyndbg)) \ __stop___dyndbg = .; \ |