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add-vmcore: add nodemask_t's size and NR_FREE_PAGES's value to vmcoreinfo_data 

[2/3] Add nodemask_t's size and NR_FREE_PAGES's value to vmcoreinfo_data.
  The dump filetering command 'makedumpfile'(v1.1.6 or before) had assumed
  the above values, and it was not good from the reliability viewpoint.
  So makedumpfile v1.2.0 came to need these values and I created the patch
  to let the kernel output them.
  makedumpfile site:
  https://sourceforge.net/projects/makedumpfile/

Signed-off-by: Ken'ichi Ohmichi <oomichi@mxs.nes.nec.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Ken'ichi Ohmichi 2007-10-16 23:27:28 -07:00 committed by Linus Torvalds
parent d768281e97
commit 6cfa062f01
2 changed files with 7 additions and 0 deletions
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5
include/linux/kexec.h
View File

@ -132,11 +132,16 @@ unsigned long paddr_vmcoreinfo_note(void);
#define SIZE(name) \
vmcoreinfo_append_str("SIZE(%s)=%lu\n", #name, \
(unsigned long)sizeof(struct name))
#define TYPEDEF_SIZE(name) \
vmcoreinfo_append_str("SIZE(%s)=%lu\n", #name, \
(unsigned long)sizeof(name))
#define OFFSET(name, field) \
vmcoreinfo_append_str("OFFSET(%s.%s)=%lu\n", #name, #field, \
(unsigned long)&(((struct name *)0)->field))
#define LENGTH(name, value) \
vmcoreinfo_append_str("LENGTH(%s)=%lu\n", #name, (unsigned long)value)
#define NUMBER(name) \
vmcoreinfo_append_str("NUMBER(%s)=%ld\n", #name, (long)name)
#define CONFIG(name) \
vmcoreinfo_append_str("CONFIG_%s=y\n", #name)

2
kernel/kexec.c
View File

@ -1218,6 +1218,7 @@ static int __init crash_save_vmcoreinfo_init(void)
SIZE(zone);
SIZE(free_area);
SIZE(list_head);
TYPEDEF_SIZE(nodemask_t);
OFFSET(page, flags);
OFFSET(page, _count);
OFFSET(page, mapping);
@ -1237,6 +1238,7 @@ static int __init crash_save_vmcoreinfo_init(void)
OFFSET(list_head, next);
OFFSET(list_head, prev);
LENGTH(zone.free_area, MAX_ORDER);
NUMBER(NR_FREE_PAGES);
arch_crash_save_vmcoreinfo();