diff options
Diffstat (limited to 'kernel/kexec.c')
| -rw-r--r-- | kernel/kexec.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/kernel/kexec.c b/kernel/kexec.c index 2c95848fbce..1197de8b2a9 100644 --- a/kernel/kexec.c +++ b/kernel/kexec.c @@ -26,6 +26,9 @@ #include <asm/system.h> #include <asm/semaphore.h> +/* Per cpu memory for storing cpu states in case of system crash. */ +note_buf_t* crash_notes; + /* Location of the reserved area for the crash kernel */ struct resource crashk_res = { .name = "Crash kernel", @@ -1060,3 +1063,16 @@ void crash_kexec(struct pt_regs *regs) xchg(&kexec_lock, 0); } } + +static int __init crash_notes_memory_init(void) +{ + /* Allocate memory for saving cpu registers. */ + crash_notes = alloc_percpu(note_buf_t); + if (!crash_notes) { + printk("Kexec: Memory allocation for saving cpu register" + " states failed\n"); + return -ENOMEM; + } + return 0; +} +module_init(crash_notes_memory_init) |