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Date: Fri, 21 Aug 2009 02:54:12 -0400 From: Amerigo Wang <amwang@...hat.com> To: linux-kernel@...r.kernel.org Cc: tony.luck@...el.com, linux-ia64@...r.kernel.org, Neil Horman <nhorman@...hat.com>, "Eric W. Biederman" <ebiederm@...ssion.com>, kamezawa.hiroyu@...fujitsu.com, Andi Kleen <andi@...stfloor.org>, Amerigo Wang <amwang@...hat.com>, akpm@...ux-foundation.org, bernhard.walle@....de, Fenghua Yu <fenghua.yu@...el.com>, Ingo Molnar <mingo@...e.hu>, Anton Vorontsov <avorontsov@...mvista.com> Subject: [Patch 0/8] V4 Implement crashkernel=auto V3 -> V4: - Reorder the patches. - Really free the reserved memory, instead of remapping it. (Thanks to KAMEZAWA Hiroyuki!) - Release the reserved memory resource when the size is 0. - Use strict_strtoul() instead of simple_strtoul(). V2 -> V3: - Use more clever way to calculate reserved memory size, especially for IA64. - Add that patch that implements shrinking reserved memory V1 -> V2: - Use include/asm-generic/kexec.h, suggested by Neil. - Rename a local variable, suggested by Fenghua. - Fix some style problems found by checkpatch.pl. - Unify the Kconfig docs. This series of patch implements automatically reserved memory for crashkernel, by introducing a new boot option "crashkernel=auto". This idea is from Neil. In case of breaking user-space applications, it modifies this boot option after it decides how much memory should be reserved. On different arch, the threshold and reserved memory size is different. Please refer patch 8/8 which contains an update for the documentation. Patch 1/8 implements shrinking reserved memory at run-time, which is useful when more than enough memory is reserved automatically. Note: This patchset was only tested on x86_64 with differernt memory sizes. Cc: Neil Horman <nhorman@...hat.com> Cc: Eric W. Biederman <ebiederm@...ssion.com> Cc: Ingo Molnar <mingo@...e.hu> Cc: Tony Luck <tony.luck@...el.com> Cc: Anton Vorontsov <avorontsov@...mvista.com> Cc: Andi Kleen <andi@...stfloor.org> Cc: Fenghua Yu <fenghua.yu@...el.com> Cc: Bernhard Walle <bernhard.walle@....de> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com> Signed-off-by: WANG Cong <amwang@...hat.com> --- Documentation/kdump/kdump.txt | 28 ++++++ arch/ia64/Kconfig | 14 +++ arch/ia64/include/asm/kexec.h | 23 ++++ arch/powerpc/Kconfig | 11 ++ arch/powerpc/include/asm/kexec.h | 8 + arch/x86/Kconfig | 13 ++ arch/x86/include/asm/kexec.h | 1 include/asm-generic/kexec.h | 42 +++++++++ include/linux/kexec.h | 5 + kernel/kexec.c | 180 +++++++++++++++++++++++++++++++++++++++ kernel/ksysfs.c | 46 +++++++++ 11 files changed, 371 insertions(+) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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