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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 /arch/x86_64/kernel | |
| parent | 82409411571ad89d271dc46f7fa26149fad9efdf (diff) | |
| download | kernel_samsung_espresso10-cc57165874e938ef684d71ba7d36e7088b551489.zip kernel_samsung_espresso10-cc57165874e938ef684d71ba7d36e7088b551489.tar.gz kernel_samsung_espresso10-cc57165874e938ef684d71ba7d36e7088b551489.tar.bz2 | |
[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/x86_64/kernel')
| -rw-r--r-- | arch/x86_64/kernel/crash.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/arch/x86_64/kernel/crash.c b/arch/x86_64/kernel/crash.c index 535e044..efe4507 100644 --- a/arch/x86_64/kernel/crash.c +++ b/arch/x86_64/kernel/crash.c @@ -19,8 +19,6 @@ #include <asm/nmi.h> #include <asm/hw_irq.h> -note_buf_t crash_notes[NR_CPUS]; - void machine_crash_shutdown(struct pt_regs *regs) { /* This function is only called after the system |