[PATCH] ARM: fix "BUG: using smp_processor_id() in preemptible code"

[Russell King - ARM Linux]

On Wed, Dec 30, 2009 at 10:47:20PM +0530, Rabin Vincent wrote:
> Fix the following warning, which appears when the register dump for a
> faulting process is printed in a kernel with SMP, DEBUG_PREEMPT, and
> DEBUG_USER (with user_debug=31) enabled:

Well, the CPU number displayed here in preemptible contexts is rather
meaningless - it doesn't necessarily reflect the CPU where the problem
originally occurred.

Maybe we should use raw_smp_processor_id() here - which is fine because
this is just debugging, and it being wrong doesn't cause unsafe
conditions.