[Ksummit-2012-discuss] [ATTEND] kernel core dump and "dying breath"

[Cong Wang]

On Sat, Jun 23, 2012 at 10:00 AM, Roland Dreier <roland at kernel.org> wrote:
> As far as the second issue is concerned -- I've hooked into
> kmsg_dump_register() just like pstore etc. so right now I really
> only get the kernel log buffer.  I can set ftrace_dump_on_oops
> to get ftrace, and so on, but perhaps having a way to configure
> what information is of interest at crash time that is factored out
> of all the ways of saving that information is a good idea.
>

Yeah, we can actually filter these information from kernel vmcore,
this is what makedumpfile does, at least it can filter kernel log
buffer, it would be interest to add support to makedumpfile to
fitler other information as well, like ftrace buffer you mentioned.