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2008-05-01kexec: make extended crashkernel= syntax less confusingMichael Ellerman1-1/+4
The extended crashkernel syntax is a little confusing in the way it handles ranges. eg: crashkernel=512M-2G:64M,2G-:128M Means if the machine has between 512M and 2G of memory the crash region should be 64M, and if the machine has 2G of memory the region should be 64M. Only if the machine has more than 2G memory will 128M be allocated. Although that semantic is correct, it is somewhat baffling. Instead I propose that the end of the range means the first address past the end of the range, ie: 512M up to but not including 2G. [[email protected]: clarify inclusive/exclusive in crashkernel commandline in documentation] Signed-off-by: Michael Ellerman <[email protected]> Acked-by: Bernhard Walle <[email protected]> Cc: "Eric W. Biederman" <[email protected]> Cc: Simon Horman <[email protected]> Signed-off-by: Bernhard Walle <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2007-10-19Add documentation for extended crashkernel syntaxBernhard Walle1-0/+26
This adds the documentation for the extended crashkernel syntax into Documentation/kdump/kdump.txt. Signed-off-by: Bernhard Walle <[email protected]> Cc: Andi Kleen <[email protected]> Cc: "Luck, Tony" <[email protected]> Cc: Paul Mackerras <[email protected]> Cc: Benjamin Herrenschmidt <[email protected]> Cc: Paul Mundt <[email protected]> Cc: Vivek Goyal <[email protected]> Cc: "Eric W. Biederman" <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2007-10-17kdump: documentation cleanupsPavel Machek1-9/+3
This cleans up kdump documentation a bit. Plus I do not think we want to mention Linux trademark in _every_ file in documentation.... Signed-off-by: Pavel Machek <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2007-10-17Add reset_devices to the recommended parametersBernhard Walle1-2/+2
This patch adds the "reset_devices" option (that's used only by one device driver for now) to the recommended list of command line parameters for kdump. Meaning (Documentation/kernel-parameters.txt): reset_devices [KNL] Force drivers to reset the underlying device during initialization. Signed-off-by: Bernhard Walle <[email protected]> Cc: "Randy.Dunlap" <[email protected]> Cc: Vivek Goyal <[email protected]> Cc: "Eric W. Biederman" <[email protected]> Cc: Haren Myneni <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2007-10-17Express new ELF32 mechanisms in documentationBernhard Walle1-5/+7
This patch reflects the http://git.kernel.org/?p=linux/kernel/git/horms/kexec-tools-testing.git;a=commit;h=b9c3648e690ad0dad12389659673206213a09760 change in kexec-tools-testing also now in the kernel documentation. Signed-off-by: Bernhard Walle <[email protected]> Cc: "Randy.Dunlap" <[email protected]> Cc: Vivek Goyal <[email protected]> Cc: "Eric W. Biederman" <[email protected]> Cc: Haren Myneni <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2007-10-17Express relocatability of kernel on x86_64 in documentationBernhard Walle1-29/+6
This patch adapts the Documentation/kdump/kdump.txt file to express the fact that the x86_64 kernel is now also relocatable. This makes i386 and x86_64 now behave the same, simplifying the documentation. Signed-off-by: Bernhard Walle <[email protected]> Cc: "Randy.Dunlap" <[email protected]> Cc: Vivek Goyal <[email protected]> Cc: "Eric W. Biederman" <[email protected]> Cc: Haren Myneni <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2007-02-20[PATCH] PPC64 Kdump documentation updateSimon Horman1-11/+13
Patch from Mohan Kumar M to add the ppc64 portions of the kdump documentation. http://thread.gmane.org/gmane.linux.kernel/481689/focus=3375 Cc: Mohan Kumar M <[email protected]> Cc: Vivek Goyal <[email protected]> Signed-off-by: Simon Horman <[email protected]> Cc: Paul Mackerras <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2007-02-12[PATCH] kexec: fix references to init in documentation for kexecHorms1-4/+4
I've noticed that the boot options are not correct for in the documentation for kdump. The "init" keyword is not necessary, and causes a kernel panic when booting with an initrd on Fedora 5. [[email protected]: put original comment with the latest version of the patch] Signed-off-by: Judith Lebzeelter <[email protected]> Acked-by: Vivek Goyal <[email protected]> Signed-off-by: Simon Horman <[email protected]> Cc: "Eric W. Biederman" <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2007-01-23[PATCH] Kdump documentation update: ia64 portionHorms1-7/+29
this patch fills in the portions for ia64 kexec. Signed-off-by: Simon Horman <[email protected]> Cc: "Zou, Nanhai" <[email protected]> Cc: Vivek Goyal <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2007-01-23[PATCH] Kdump documentation update: kexec-tools updateHorms1-4/+9
Mohan Kumar suggested making kexec-tools-testing.tar.gz a link to the latest version. I have done this and this patch updates the documentation accordingly. Signed-off-by: Simon Horman <[email protected]> Cc: Vivek Goyal <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2007-01-11[PATCH] Kdump documentation updateVivek Goyal1-72/+152
o Kdump documentation update. - Update details for using relocatable kernel. - Start using kexec-tools-testing release as it is latest and old kexec-tools can't load relocatable bzImage file. - Also add kdump on ia64 specific details. Signed-off-by: Vivek Goyal <[email protected]> Cc: Horms <[email protected]> Cc: Mohan Kumar M <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2006-10-03Documentation: remove duplicated wordsPaolo Ornati1-1/+1
Remove many duplicated words under Documentation/ and do other small cleanups. Examples: "and and" --> "and" "in in" --> "in" "the the" --> "the" "the the" --> "to the" ... Signed-off-by: Paolo Ornati <[email protected]> Signed-off-by: Adrian Bunk <[email protected]>
2006-06-26fix paniced->panicked typosLee Revell1-1/+1
In a testament to the utter simplicity and logic of the English language ;-), I found a single correct use - in kernel/panic.c - and 10-15 incorrect ones. Signed-Off-By: Lee Revell <[email protected]> Signed-off-by: Adrian Bunk <[email protected]>
2006-06-25[PATCH] Updated kdump documentationDavid Wilder1-125/+295
Cc: Vivek Goyal <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2006-01-11[PATCH] kdump: add dmesg gdbmacro into documentAkinobu Mita1-0/+22
Add gdb macro which print the kernel ring buffer into kdump docs Signed-off-by: Akinobu Mita <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2006-01-10[PATCH] Kdump documentation updateManeesh Soni1-70/+79
Update the kdump documentation to reflect the changes due to recent kernel config option changes for kexec and kdump. Signed-off-by: Maneesh Soni <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2005-09-13[PATCH] More documentation, minor cleanup in kdump.txtVivek Goyal1-3/+8
Added clarification on the root device format to be used for second kernel, as well as specifying initrd if drivers are built as modules. Signed-off-by: Kishore Sampathkumar <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2005-09-09[PATCH] Kdump: Documentation UpdateVivek Goyal1-8/+8
There are minor changes in command line options in kexec-tools for kdump. This patch updates the documentation to reflect those changes. Signed-off-by: Vivek Goyal <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2005-06-25[PATCH] kdump documentation update to introduce use of irqpollVivek Goyal1-11/+17
o Specify "irqpoll" command line option which loading second kernel. This helps in reducing driver initialization failures in second kernel due to shared interrupts. o Enabled LAPIC/IOAPIC support for UP kernels in second kernel. This reduces the chances of devices sharing the irq and hence reduces the chances of driver initialization failures in second kernel. o Build a UP capture kernel and disabled SMP support. Signed-off-by: Vivek Goyal <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2005-06-25[PATCH] kdump: Documentation for KdumpVivek Goyal2-0/+314
This patch contains the documentation for the kexec based crash dump tool. Quick kdump-howto ================================================================ 1) Download and build kexec-tools. 2) Download and build the latest kexec/kdump (-mm) kernel patchset. Two kernels need to be built in order to get this feature working. A) First kernel: a) Enable "kexec system call" feature: CONFIG_KEXEC=y b) Physical load address (use default): CONFIG_PHYSICAL_START=0x100000 c) Enable "sysfs file system support": CONFIG_SYSFS=y d) Boot into first kernel with the command line parameter "crashkernel=Y@X": For example: "crashkernel=64M@16M". B) Second kernel: a) Enable "kernel crash dumps" feature: CONFIG_CRASH_DUMP=y b) Physical load addreess, use same load address as X in "crashkernel" kernel parameter in d) above, e.g., 16 MB or 0x1000000. CONFIG_PHYSICAL_START=0x1000000 c) Enable "/proc/vmcore support" (Optional, in Pseudo filesystems). CONFIG_PROC_VMCORE=y 3) Boot into the first kernel. 4) Load the second kernel to be booted using: kexec -p <second-kernel> --crash-dump --args-linux --append="root=<root-dev> maxcpus=1 init 1" 5) System reboots into the second kernel when a panic occurs. A module can be written to force the panic, for testing purposes. 6) See Documentation/kdump.txt for how to read the first kernel's memory image and how to analyze it. Signed-off-by: Hariprasad Nellitheertha <[email protected]> Signed-off-by: Eric Biederman <[email protected]> Signed-off-by: Vivek Goyal <[email protected]> Signed-off-by: randy_dunlap <[email protected]> Signed-off-by: Maneesh Soni <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
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