Spinlocks under uniprocessor running non preemptible kernel

From: MAx <mahesh1280@xxxxxxxxx>
Date: Fri, 21 Sep 2007 01:55:47 -0700

Hi,
I've read that spinlocks can cause system hangs if used on a
uniprocessor system which has a
nonpremptible kernel running.
I've seen many spinlocks used in linux 2.4.x version running on
uniprocessor systems and there
doesn't seem to be any problem with them.

My question is how is it possible?

MAx

.

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Relevant Pages

Re: Spinlocks under uniprocessor running non preemptible kernel
... linux 2.4.x(non-preemptible kernel) ... either a spinlock() call will succeed immediately or hang infinitely. ...
(comp.os.linux.development.system)
Re: Spinlocks under uniprocessor running non preemptible kernel
... uniprocessor system with linux 2.4.x(non-preemptible kernel) ... Spin locks are not supposed to do anything on an uniprocessor. ...
(comp.os.linux.development.system)