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authorVivek Goyal <vgoyal@in.ibm.com>2006-01-09 23:51:50 -0500
committerLinus Torvalds <torvalds@g5.osdl.org>2006-01-10 11:01:28 -0500
commit4ae362be509306eafa6441603686d33fefe321c1 (patch)
treed16a59e9c85945a6cc4a0945c80c0ecd97815923 /fs/proc/vmcore.c
parentec9ce0dbaa734bc95ec73cf5c13f202f1adb219d (diff)
[PATCH] kdump: read previous kernel's memory
- Moving the crash_dump.c file to arch dependent part as kmap_atomic_pfn is specific to i386 and highmem may not exist in other archs. - Use ioremap for x86_64 to map the previous kernel memory. - In copy_oldmem_page(), we now directly copy to the user/kernel buffer and avoid the unneccesary copy to a kmalloc'd page. Signed-off-by: Rachita Kothiyal <rachita@in.ibm.com> Signed-off-by: Vivek Goyal <vgoyal@in.ibm.com> Cc: Andi Kleen <ak@muc.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs/proc/vmcore.c')
-rw-r--r--fs/proc/vmcore.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/proc/vmcore.c b/fs/proc/vmcore.c
index 3b2e7b69e63a..5378d7c78419 100644
--- a/fs/proc/vmcore.c
+++ b/fs/proc/vmcore.c
@@ -35,6 +35,9 @@ static size_t elfcorebuf_sz;
35/* Total size of vmcore file. */ 35/* Total size of vmcore file. */
36static u64 vmcore_size; 36static u64 vmcore_size;
37 37
38/* Stores the physical address of elf header of crash image. */
39unsigned long long elfcorehdr_addr = ELFCORE_ADDR_MAX;
40
38struct proc_dir_entry *proc_vmcore = NULL; 41struct proc_dir_entry *proc_vmcore = NULL;
39 42
40/* Reads a page from the oldmem device from given offset. */ 43/* Reads a page from the oldmem device from given offset. */