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Re: [Xen-devel] [PATCH v9 05/19] qspinlock: Optimize for smaller NR_CPUS
- To: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
- From: Waiman Long <waiman.long@xxxxxx>
- Date: Fri, 18 Apr 2014 17:40:15 -0400
- Cc: linux-arch@xxxxxxxxxxxxxxx, Raghavendra K T <raghavendra.kt@xxxxxxxxxxxxxxxxxx>, Gleb Natapov <gleb@xxxxxxxxxx>, kvm@xxxxxxxxxxxxxxx, Scott J Norton <scott.norton@xxxxxx>, x86@xxxxxxxxxx, Paolo Bonzini <paolo.bonzini@xxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx, Ingo Molnar <mingo@xxxxxxxxxx>, Chegu Vinod <chegu_vinod@xxxxxx>, David Vrabel <david.vrabel@xxxxxxxxxx>, "H. Peter Anvin" <hpa@xxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, "Paul E. McKenney" <paulmck@xxxxxxxxxxxxxxxxxx>, Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>, Oleg Nesterov <oleg@xxxxxxxxxx>
- Delivery-date: Fri, 18 Apr 2014 21:40:58 +0000
- List-id: Xen developer discussion <xen-devel.lists.xen.org>
On 04/18/2014 03:05 PM, Peter Zijlstra wrote:
On Fri, Apr 18, 2014 at 01:52:50PM -0400, Waiman Long wrote:
I am confused by your notation.
Nah, I think I was confused :-) Make the 1 _Q_LOCKED_VAL though, as
that's the proper constant to use.
Everyone gets confused once in a while:-) I have plenty of that myself.
I will change 1 to _Q_LOCKED_VAL as suggested.
-Longman
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