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authorVivek Goyal <vgoyal@in.ibm.com>2005-06-25 17:58:21 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-06-25 19:24:53 -0400
commit666bfddbe8b8fd4fd44617d6c55193d5ac7edb29 (patch)
tree74b03732131c51dbfd79a06f97d5ccec8894f9f3 /include
parent2030eae52b416a9a9f0ffda74c982b7f1e19496d (diff)
[PATCH] kdump: Access dump file in elf format (/proc/vmcore)
From: "Vivek Goyal" <vgoyal@in.ibm.com> o Support for /proc/vmcore interface. This interface exports elf core image either in ELF32 or ELF64 format, depending on the format in which elf headers have been stored by crashed kernel. o Added support for CONFIG_VMCORE config option. o Removed the dependency on /proc/kcore. From: "Eric W. Biederman" <ebiederm@xmission.com> This patch has been refactored to more closely match the prevailing style in the affected files. And to clearly indicate the dependency between /proc/kcore and proc/vmcore.c From: Hariprasad Nellitheertha <hari@in.ibm.com> This patch contains the code that provides an ELF format interface to the previous kernel's memory post kexec reboot. Signed off by Hariprasad Nellitheertha <hari@in.ibm.com> Signed-off-by: Eric Biederman <ebiederm@xmission.com> 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 'include')
-rw-r--r--include/linux/crash_dump.h4
-rw-r--r--include/linux/proc_fs.h7
2 files changed, 11 insertions, 0 deletions
diff --git a/include/linux/crash_dump.h b/include/linux/crash_dump.h
index 3f25fd1eaa4b..534d750d922d 100644
--- a/include/linux/crash_dump.h
+++ b/include/linux/crash_dump.h
@@ -7,8 +7,12 @@
7#include <linux/device.h> 7#include <linux/device.h>
8#include <linux/proc_fs.h> 8#include <linux/proc_fs.h>
9 9
10#define ELFCORE_ADDR_MAX (-1ULL)
10extern unsigned long long elfcorehdr_addr; 11extern unsigned long long elfcorehdr_addr;
11extern ssize_t copy_oldmem_page(unsigned long, char *, size_t, 12extern ssize_t copy_oldmem_page(unsigned long, char *, size_t,
12 unsigned long, int); 13 unsigned long, int);
14extern struct file_operations proc_vmcore_operations;
15extern struct proc_dir_entry *proc_vmcore;
16
13#endif /* CONFIG_CRASH_DUMP */ 17#endif /* CONFIG_CRASH_DUMP */
14#endif /* LINUX_CRASHDUMP_H */ 18#endif /* LINUX_CRASHDUMP_H */
diff --git a/include/linux/proc_fs.h b/include/linux/proc_fs.h
index 59e505261fd6..0563581e3a02 100644
--- a/include/linux/proc_fs.h
+++ b/include/linux/proc_fs.h
@@ -74,6 +74,13 @@ struct kcore_list {
74 size_t size; 74 size_t size;
75}; 75};
76 76
77struct vmcore {
78 struct list_head list;
79 unsigned long long paddr;
80 unsigned long size;
81 loff_t offset;
82};
83
77#ifdef CONFIG_PROC_FS 84#ifdef CONFIG_PROC_FS
78 85
79extern struct proc_dir_entry proc_root; 86extern struct proc_dir_entry proc_root;