diff options
| author | Vivek Goyal <vgoyal@in.ibm.com> | 2006-01-09 20:51:41 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-01-10 08:01:26 -0800 |
| commit | cc57165874e938ef684d71ba7d36e7088b551489 (patch) | |
| tree | e1847f5547a7a426214e9ef0719eab908ee305d7 /arch/ppc/kernel/machine_kexec.c | |
| parent | 82409411571ad89d271dc46f7fa26149fad9efdf (diff) | |
[PATCH] kdump: dynamic per cpu allocation of memory for saving cpu registers
- In case of system crash, current state of cpu registers is saved in memory
in elf note format. So far memory for storing elf notes was being allocated
statically for NR_CPUS.
- This patch introduces dynamic allocation of memory for storing elf notes.
It uses alloc_percpu() interface. This should lead to better memory usage.
- Introduced based on Andi Kleen's and Eric W. Biederman's suggestions.
- This patch also moves memory allocation for elf notes from architecture
dependent portion to architecture independent portion. Now crash_notes is
architecture independent. The whole idea is that size of memory to be
allocated per cpu (MAX_NOTE_BYTES) can be architecture dependent and
allocation of this memory can be architecture independent.
Signed-off-by: Vivek Goyal <vgoyal@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/ppc/kernel/machine_kexec.c')
| -rw-r--r-- | arch/ppc/kernel/machine_kexec.c | 6 |
1 files changed, 0 insertions, 6 deletions
diff --git a/arch/ppc/kernel/machine_kexec.c b/arch/ppc/kernel/machine_kexec.c index a882b0dbe8d..84d65a87191 100644 --- a/arch/ppc/kernel/machine_kexec.c +++ b/arch/ppc/kernel/machine_kexec.c @@ -28,12 +28,6 @@ typedef NORET_TYPE void (*relocate_new_kernel_t)( const extern unsigned char relocate_new_kernel[]; const extern unsigned int relocate_new_kernel_size; -/* - * Provide a dummy crash_notes definition while crash dump arrives to ppc. - * This prevents breakage of crash_notes attribute in kernel/ksysfs.c. - */ -note_buf_t crash_notes[NR_CPUS]; - void machine_shutdown(void) { if (ppc_md.machine_shutdown) |