From mboxrd@z Thu Jan 1 00:00:00 1970 From: Amerigo Wang Date: Wed, 12 Aug 2009 08:15:09 +0000 Subject: [Patch 0/8] V3 Implement crashkernel=auto Message-Id: <20090812081731.5757.25254.sendpatchset@localhost.localdomain> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-kernel@vger.kernel.org Cc: tony.luck@intel.com, linux-ia64@vger.kernel.org, Neil Horman , "Eric W. Biederman" , Andi Kleen , Amerigo Wang , akpm@linux-foundation.org, bernhard.walle@gmx.de, Fenghua Yu , Ingo Molnar , Anton Vorontsov 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 7/8 which contains an update for the documentation. Patch 8/8 implements shrinking reserved memory at run-time. Note: This patchset was only tested on x86_64 with differernt memory sizes. Signed-off-by: WANG Cong Cc: Neil Horman Cc: Eric W. Biederman Cc: Ingo Molnar Cc: Tony Luck Cc: Anton Vorontsov Cc: Andi Kleen Cc: Fenghua Yu Cc: Bernhard Walle --- 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 | 3 + kernel/kexec.c | 104 +++++++++++++++++++++++++++++++++++++++ kernel/ksysfs.c | 21 +++++++ 11 files changed, 268 insertions(+)