Re: [RFC][PATCH 0/3] x86/nmi: Print all cpu stacks from NMI safely

Steven Rostedt
2014-06-19T23:36:39Z

On Fri, 20 Jun 2014 01:27:26 +0200 (CEST)
Jiri Kosina <jkosina@suse.cz> wrote:

>
> I don't think there is a need for a global stop_machine()-like
> synchronization here. The printing CPU will be sending IPI to the CPU N+1
> only after it has finished printing CPU N stacktrace.

So you plan on sending an IPI to a CPU then wait for it to acknowledge
that it is spinning, and then print out the data and then tell the CPU
it can stop spinning?

-- Steve