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authorKen'ichi Ohmichi <oomichi@mxs.nes.nec.co.jp>2008-01-08 15:33:05 -0800
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2008-01-08 16:10:36 -0800
commit83a08e7c6ed533a47631794e7f618a98094b4129 (patch)
treecf3246a639fc66b4a81968c78edad33598729029 /kernel/kexec.c
parentcaeeeecfdaeada2998eb3c29c3ebd59afb79ef06 (diff)
downloadlinux-2.6.34-ux500-83a08e7c6ed533a47631794e7f618a98094b4129.tar.gz
vmcoreinfo: add the array length of "free_list" for filtering free pages
This patch adds the array length of "free_area.free_list" to the vmcoreinfo data so that makedumpfile (dump filtering command) can exclude all free pages in linux-2.6.24. makedumpfile creates a small dumpfile by excluding unnecessary pages for the analysis. To distinguish unnecessary pages, makedumpfile gets the vmcoreinfo data which has the minimum debugging information only for dump filtering. In 2.6.24-rc1 or later, the free_area.free_list is an array which has one list for each migrate types instead of a single list. makedumpfile needs the array length of "free_area.free_list" and the vmcoreinfo data should contain it. Signed-off-by: Huang Ying <ying.huang@intel.com> Tested-by: Ken'ichi Ohmichi <oomichi@mxs.nes.nec.co.jp> Acked-by: Simon Horman <horms@verge.net.au> Cc: David Rientjes <rientjes@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/kexec.c')
-rw-r--r--kernel/kexec.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/kexec.c b/kernel/kexec.c
index aa74a1ef2da..9a26eec9eb0 100644
--- a/kernel/kexec.c
+++ b/kernel/kexec.c
@@ -1404,6 +1404,7 @@ static int __init crash_save_vmcoreinfo_init(void)
VMCOREINFO_OFFSET(list_head, next);
VMCOREINFO_OFFSET(list_head, prev);
VMCOREINFO_LENGTH(zone.free_area, MAX_ORDER);
+ VMCOREINFO_LENGTH(free_area.free_list, MIGRATE_TYPES);
VMCOREINFO_NUMBER(NR_FREE_PAGES);
arch_crash_save_vmcoreinfo();