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Date: Fri, 20 Mar 2015 10:08:48 +1100
From: Paul Mackerras <paulus@samba.org>
To: linuxppc-dev@ozlabs.org
Subject: Re: [PATCH] powerpc: Export __spin_yield
Message-ID: <20150319230848.GB31148@iris.ozlabs.ibm.com>
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Cc: "Suresh E. Warrier" <warrier@linux.vnet.ibm.com>
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On Wed, Feb 25, 2015 at 05:23:53PM -0600, Suresh E. Warrier wrote:
> Export __spin_yield so that the arch_spin_unlock() function can
> be invoked from a module. This will be required for modules where
> we want to take a lock that is also is acquired in hypervisor
> real mode. Because we want to avoid running any lockdep code
> (which may not be safe in real mode), this lock needs to be 
> an arch_spinlock_t instead of a normal spinlock.
> 
> Signed-off-by: Suresh Warrier <warrier@linux.vnet.ibm.com>

Acked-by: Paul Mackerras <paulus@samba.org>