Re: [Xen-devel] [PATCH6/6] cpuidle: redefine cpumask_lock as rwlock_t

["Jan Beulich" <JBeulich@xxxxxxxxxx>]

>>> On 17.06.10 at 09:38, "Wei, Gang" <gang.wei@xxxxxxxxx> wrote:
> cpuidle: redefine cpumask_lock as rwlock_t
> 
> Multiple cpus clear hpet channel cpumask simultaneously is ok. So we can 
> change the cpumask_lock to rwlock_t.

Now this I think really needs a comment in the code: You use a read
lock on the writer side and a write lock on the reader side - quite the
opposite of normal behavior.

Jan


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel