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authorVivek Goyal <[email protected]>2014-01-23 15:56:01 -0800
committerLinus Torvalds <[email protected]>2014-01-23 16:37:03 -0800
commitbdd490ade365b1173485b829e5457af8e16c7f01 (patch)
treea2eea5e26d56697d5a06249dea5b8c91f472117b
parent77019967f06b5f30c8b619eac0dfdbc68465fa87 (diff)
kdump: add /sys/kernel/vmcoreinfo ABI documentation
/sys/kernel/vmcoreinfo was introduced long back but there is no ABI documentation. This patch adds the documentation. Signed-off-by: Vivek Goyal <[email protected]> Cc: Ken'ichi Ohmichi <[email protected]> Cc: Dan Aloni <[email protected]> Cc: Greg KH <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
-rw-r--r--Documentation/ABI/testing/sysfs-kernel-vmcoreinfo14
1 files changed, 14 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-kernel-vmcoreinfo b/Documentation/ABI/testing/sysfs-kernel-vmcoreinfo
new file mode 100644
index 000000000000..7bd81168e063
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-kernel-vmcoreinfo
@@ -0,0 +1,14 @@
+What: /sys/kernel/vmcoreinfo
+Date: October 2007
+KernelVersion: 2.6.24
+Contact: Ken'ichi Ohmichi <[email protected]>
+ Kexec Mailing List <[email protected]>
+ Vivek Goyal <[email protected]>
+Description
+ Shows physical address and size of vmcoreinfo ELF note.
+ First value contains physical address of note in hex and
+ second value contains the size of note in hex. This ELF
+ note info is parsed by second kernel and exported to user
+ space as part of ELF note in /proc/vmcore file. This note
+ contains various information like struct size, symbol
+ values, page size etc.