Re: [BUG] CPU hotplug: system hang on CPU hot remove during oprofile

Russell King
2007-05-28T09:12:59Z

On Mon, May 28, 2007 at 01:53:30PM +0900, Satoru Takeuchi wrote:
> I found a bug on CPU hotplug. If oprofile is running, CPU hot remove causes
> system hang. I only confirm that this problem occurs on my ia64 box. I'm glad
> if someone report about other arch.

oprofile is not CPU hotplug safe. (It should probably be made so,
but I think that would require a redesign, or at least a rewrite of
the backends.)

--
Russell King
Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/