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Re: [Xen-devel] [PATCH] spinlock: improve spin_is_locked() for recursive locks

To: Jan Beulich <JBeulich@xxxxxxxx>, xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>
From: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
Date: Thu, 24 Mar 2016 14:38:31 +0000
Cc: Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>, Keir Fraser <keir@xxxxxxx>, Tim Deegan <tim@xxxxxxx>
Delivery-date: Thu, 24 Mar 2016 14:38:40 +0000
List-id: Xen developer discussion <xen-devel.lists.xen.org>

On 24/03/16 11:30, Jan Beulich wrote:
> Recursive locks know their current owner, and since we use the function
> solely to determine whether a particular lock is being held by the
> current CPU (which so far has been an imprecise check), make actually
> check the owner for recusrively acquired locks.
>
> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>

Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

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References:
- [Xen-devel] [PATCH] spinlock: improve spin_is_locked() for recursive locks
  - From: Jan Beulich

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