From: Vivek Goyal Date: Tue, 10 Jan 2006 04:51:41 +0000 (-0800) Subject: [PATCH] kdump: dynamic per cpu allocation of memory for saving cpu registers X-Git-Tag: v2.6.16-rc1~639 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cc57165874e938ef684d71ba7d36e7088b551489;p=pandora-kernel.git [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 --- Reading git-diff-tree failed