From cc57165874e938ef684d71ba7d36e7088b551489 Mon Sep 17 00:00:00 2001 From: Vivek Goyal Date: Mon, 9 Jan 2006 20:51:41 -0800 Subject: [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 Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/asm-s390/kexec.h | 3 --- 1 file changed, 3 deletions(-) (limited to 'include/asm-s390') diff --git a/include/asm-s390/kexec.h b/include/asm-s390/kexec.h index 54cf7d9f251c..b4809d98fe69 100644 --- a/include/asm-s390/kexec.h +++ b/include/asm-s390/kexec.h @@ -35,8 +35,5 @@ #define KEXEC_ARCH KEXEC_ARCH_S390 #define MAX_NOTE_BYTES 1024 -typedef u32 note_buf_t[MAX_NOTE_BYTES/4]; - -extern note_buf_t crash_notes[]; #endif /*_S390_KEXEC_H */ -- cgit v1.2.2