diff options
| author | Baoquan He <bhe@redhat.com> | 2023-09-14 11:31:38 +0800 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-10-04 10:41:58 -0700 |
| commit | b631b95dded5e7f007a3a79cbaf82ef50c1e2cf7 (patch) | |
| tree | a7c344bbb58d6a53aadaed60835633f9f5a33ea7 /include/linux/crash_core.h | |
| parent | 0ab97169aa0517079b22c2e64192906caa5dc6d5 (diff) | |
crash_core: move crashk_*res definition into crash_core.c
Both crashk_res and crashk_low_res are used to mark the reserved
crashkernel regions in iomem_resource tree. And later the generic
crashkernel resrvation will be added into crash_core.c. So move
crashk_res and crashk_low_res definition into crash_core.c to avoid
compiling error if CONFIG_CRASH_CORE=on while CONFIG_KEXEC_CORE is unset.
Meanwhile include <asm/crash_core.h> in <linux/crash_core.h> if generic
reservation is needed. In that case, <asm/crash_core.h> need be added by
ARCH. In asm/crash_core.h, ARCH can provide its own macro definitions to
override macros in <linux/crash_core.h> if needed. Wrap the including
into CONFIG_ARCH_HAS_GENERIC_CRASHKERNEL_RESERVATION ifdeffery scope to
avoid compiling error in other ARCH-es which don't take the generic
reservation way yet.
Link: https://lkml.kernel.org/r/20230914033142.676708-6-bhe@redhat.com
Signed-off-by: Baoquan He <bhe@redhat.com>
Reviewed-by: Zhen Lei <thunder.leizhen@huawei.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Chen Jiahao <chenjiahao16@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'include/linux/crash_core.h')
| -rw-r--r-- | include/linux/crash_core.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/crash_core.h b/include/linux/crash_core.h index 4dbd6565e0ff..3c735a7e33fb 100644 --- a/include/linux/crash_core.h +++ b/include/linux/crash_core.h @@ -5,6 +5,14 @@ #include <linux/linkage.h> #include <linux/elfcore.h> #include <linux/elf.h> +#ifdef CONFIG_ARCH_HAS_GENERIC_CRASHKERNEL_RESERVATION +#include <asm/crash_core.h> +#endif + +/* Location of a reserved region to hold the crash kernel. + */ +extern struct resource crashk_res; +extern struct resource crashk_low_res; #define CRASH_CORE_NOTE_NAME "CORE" #define CRASH_CORE_NOTE_HEAD_BYTES ALIGN(sizeof(struct elf_note), 4) |