[RFC Patch 0/2] Slimdump framework using CRASH_REASON - v2

["K.Prasad" <prasad@linux.vnet.ibm.com>]

Hi All,
	In furtherance of the previous discussion regarding 'slimdump'
(refer: http://article.gmane.org/gmane.linux.kernel/1204967), it was
decided that,

- An entry in VMCOREINFO elf-note be added to denote the cause of crash,
  instead of creating a new elf-note.

- Upstream tools such as 'makedumpfile' and 'crash' be modified to
  recognise this string and inform the user accordingly.

Accordingly, this new version of the patchset makes the following
changes 

Changelog - version 2
-----------------------
(First version posted here:
http://article.gmane.org/gmane.linux.kernel/1198435)

- Append VMCOREINFO elf-note with a new variable CRASH_REASON whose
  value will be populated using arch_add_crash_reason() function.

- Define arch_add_crash_reason() in the x86 MCE path to return "PANIC_MCE"
  in the panic path of MCE.

- 'makedumpfile' tool is taught to recognise PANIC_MCE string as one
  value of CRASH_REASON for which 'slimdump' must be captured.

- Changes to 'crash' tool are not included, and is deferred till there's
  consensus to the kernel and makedumpfile patches.

Let me know your comments on this.

Thanks,
K.Prasad