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authorVivek Goyal <vgoyal@in.ibm.com>2006-01-09 20:51:47 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-01-10 08:01:27 -0800
commitaac04b32f3e4c63f461459d0e1d6aa01caac6e66 (patch)
treef8bfb3cf1850b4e9f1f450c09d9cb33a3b29d667 /arch/x86_64
parent69cda7b1f06befb8d6a884b8a663d19dcaef590b (diff)
[PATCH] kdump: x86_64: add elfcorehdr command line option
- elfcorehdr= specifies the location of elf core header stored by the crashed kernel. This command line option will be passed by the kexec-tools to capture kernel. Changes in this version : - Added more comments in kernel-parameters.txt and in code. Signed-off-by: Murali M Chakravarthy <muralim@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 'arch/x86_64')
-rw-r--r--arch/x86_64/kernel/setup.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/x86_64/kernel/setup.c b/arch/x86_64/kernel/setup.c
index ff9620b800c..a0e0c9ca8f1 100644
--- a/arch/x86_64/kernel/setup.c
+++ b/arch/x86_64/kernel/setup.c
@@ -35,6 +35,7 @@
#include <asm/processor.h>
#include <linux/console.h>
#include <linux/seq_file.h>
+#include <linux/crash_dump.h>
#include <linux/root_dev.h>
#include <linux/pci.h>
#include <linux/acpi.h>
@@ -418,6 +419,14 @@ static __init void parse_cmdline_early (char ** cmdline_p)
}
#endif
+#ifdef CONFIG_PROC_VMCORE
+ /* elfcorehdr= specifies the location of elf core header
+ * stored by the crashed kernel. This option will be passed
+ * by kexec loader to the capture kernel.
+ */
+ else if(!memcmp(from, "elfcorehdr=", 11))
+ elfcorehdr_addr = memparse(from+11, &from);
+#endif
next_char:
c = *(from++);
if (!c)