]> pilppa.com Git - linux-2.6-omap-h63xx.git/commit
Add vmcoreinfo
authorKen'ichi Ohmichi <oomichi@mxs.nes.nec.co.jp>
Wed, 17 Oct 2007 06:27:27 +0000 (23:27 -0700)
committerLinus Torvalds <torvalds@woody.linux-foundation.org>
Wed, 17 Oct 2007 15:42:54 +0000 (08:42 -0700)
commitfd59d231f81cb02870b9cf15f456a897f3669b4e
tree5713c13bd678774f1ba3c42bfff5008c1812deae
parent0e647c04f665e9b3451a1ebe8252b38ffe0207c8
Add vmcoreinfo

This patch set frees the restriction that makedumpfile users should install a
vmlinux file (including the debugging information) into each system.

makedumpfile command is the dump filtering feature for kdump.  It creates a
small dumpfile by filtering unnecessary pages for the analysis.  To
distinguish unnecessary pages, it needs a vmlinux file including the debugging
information.  These days, the debugging package becomes a huge file, and it is
hard to install it into each system.

To solve the problem, kdump developers discussed it at lkml and kexec-ml.  As
the result, we reached the conclusion that necessary information for dump
filtering (called "vmcoreinfo") should be embedded into the first kernel file
and it should be accessed through /proc/vmcore during the second kernel.
(http://www.uwsg.iu.edu/hypermail/linux/kernel/0707.0/1806.html)

Dan Aloni created the patch set for the above implementation.
(http://www.uwsg.iu.edu/hypermail/linux/kernel/0707.1/1053.html)

And I updated it for multi architectures and memory models.
(http://lists.infradead.org/pipermail/kexec/2007-August/000479.html)

Signed-off-by: Dan Aloni <da-x@monatomic.org>
Signed-off-by: Ken'ichi Ohmichi <oomichi@mxs.nes.nec.co.jp>
Signed-off-by: Bernhard Walle <bwalle@suse.de>
Signed-off-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
arch/ia64/kernel/machine_kexec.c
arch/ia64/mm/discontig.c
arch/x86/kernel/machine_kexec_32.c
arch/x86/kernel/machine_kexec_64.c
include/asm-ia64/numa.h
include/linux/kexec.h
kernel/kexec.c
kernel/ksysfs.c