Re: [PATCH] OF: Fixup resursive locking code paths

[Paul Gortmaker]

On 13-02-04 05:48 AM, Thomas Gleixner wrote:
> On Fri, 25 Jan 2013, Paul Gortmaker wrote:
> 
>> From: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
>>
>> There is no real reason to use a rwlock for devtree_lock. It even
>> could be a mutex, but unfortunately it's locked from cpu hotplug
>> paths which can't schedule :(
>>
>> So it needs to become a raw lock on rt as well.  The devtree_lock would
>> be the only user of a raw_rw_lock, so we are better off cleaning up the
>> recursive locking paths which allows us to convert devtree_lock to a
>> read_lock.
> 
> Hmm. It's already a rw_lock. For RT we want to change that thing to a
> raw_spinlock.

Thanks for the reminder.  Part 2 sent now that the cleanup got OK'd.

Paul.
--

> 
> Thanks,
> 
> 	tglx
> 
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/