diff options
Diffstat (limited to 'include/linux/kexec.h')
| -rw-r--r-- | include/linux/kexec.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/include/linux/kexec.h b/include/linux/kexec.h index 8c2c7fcd58ce..99f2d6f0c83a 100644 --- a/include/linux/kexec.h +++ b/include/linux/kexec.h @@ -121,6 +121,23 @@ extern struct page *kimage_alloc_control_pages(struct kimage *image, extern void crash_kexec(struct pt_regs *); int kexec_should_crash(struct task_struct *); void crash_save_cpu(struct pt_regs *regs, int cpu); +void crash_save_vmcoreinfo(void); +void arch_crash_save_vmcoreinfo(void); +void vmcoreinfo_append_str(const char *fmt, ...); +unsigned long paddr_vmcoreinfo_note(void); + +#define SYMBOL(name) \ + vmcoreinfo_append_str("SYMBOL(%s)=%lx\n", #name, (unsigned long)&name) +#define SIZE(name) \ + vmcoreinfo_append_str("SIZE(%s)=%d\n", #name, sizeof(struct name)) +#define OFFSET(name, field) \ + vmcoreinfo_append_str("OFFSET(%s.%s)=%d\n", #name, #field, \ + &(((struct name *)0)->field)) +#define LENGTH(name, value) \ + vmcoreinfo_append_str("LENGTH(%s)=%d\n", #name, value) +#define CONFIG(name) \ + vmcoreinfo_append_str("CONFIG_%s=y\n", #name) + extern struct kimage *kexec_image; extern struct kimage *kexec_crash_image; @@ -148,11 +165,20 @@ extern struct kimage *kexec_crash_image; #define KEXEC_FLAGS (KEXEC_ON_CRASH) /* List of defined/legal kexec flags */ +#define VMCOREINFO_BYTES (4096) +#define VMCOREINFO_NOTE_NAME "VMCOREINFO" +#define VMCOREINFO_NOTE_NAME_BYTES ALIGN(sizeof(VMCOREINFO_NOTE_NAME), 4) +#define VMCOREINFO_NOTE_SIZE (KEXEC_NOTE_HEAD_BYTES*2 + VMCOREINFO_BYTES \ + + VMCOREINFO_NOTE_NAME_BYTES) + /* Location of a reserved region to hold the crash kernel. */ extern struct resource crashk_res; typedef u32 note_buf_t[KEXEC_NOTE_BYTES/4]; extern note_buf_t *crash_notes; +extern u32 vmcoreinfo_note[VMCOREINFO_NOTE_SIZE/4]; +extern unsigned int vmcoreinfo_size; +extern unsigned int vmcoreinfo_max_size; #else /* !CONFIG_KEXEC */ |