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| 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 /include/asm-x86_64 | |
| parent | 82409411571ad89d271dc46f7fa26149fad9efdf (diff) | |
| download | op-kernel-dev-cc57165874e938ef684d71ba7d36e7088b551489.zip op-kernel-dev-cc57165874e938ef684d71ba7d36e7088b551489.tar.gz | |
[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 'include/asm-x86_64')
| -rw-r--r-- | include/asm-x86_64/kexec.h | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/include/asm-x86_64/kexec.h b/include/asm-x86_64/kexec.h index 42d2ff1..cea7854 100644 --- a/include/asm-x86_64/kexec.h +++ b/include/asm-x86_64/kexec.h @@ -26,8 +26,5 @@ #define KEXEC_ARCH KEXEC_ARCH_X86_64 #define MAX_NOTE_BYTES 1024 -typedef u32 note_buf_t[MAX_NOTE_BYTES/4]; - -extern note_buf_t crash_notes[]; #endif /* _X86_64_KEXEC_H */ |
