linux-kernel - Re: [PATCH next] OF: convert devtree lock from rw

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Message-Id: <20130204.125450.2011131720910598109.davem@davemloft.net>
Date:	Mon, 04 Feb 2013 12:54:50 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	paul.gortmaker@...driver.com
Cc:	rob.herring@...xeda.com, grant.likely@...retlab.ca,
	sam@...nborg.org, devicetree-discuss@...ts.ozlabs.org,
	linux-kernel@...r.kernel.org, sparclinux@...r.kernel.org,
	linux-rt-users@...r.kernel.org, tglx@...utronix.de
Subject: Re: [PATCH next] OF: convert devtree lock from rw_lock to raw
 spinlock

From: Paul Gortmaker <paul.gortmaker@...driver.com>
Date: Mon,  4 Feb 2013 11:05:21 -0500

> From: Thomas Gleixner <tglx@...utronix.de>
> 
> With the locking cleanup in place (from "OF: Fixup resursive
> locking code paths"), we can now do the conversion from the
> rw_lock to a raw spinlock as required for preempt-rt.
> 
> The previous cleanup and the this conversion were originally
> separate since they predated when mainline got raw spinlock (in
> commit c2f21ce2e31286a "locking: Implement new raw_spinlock").
> 
> So, at that point in time, the cleanup was considered plausible
> for mainline, but not this conversion.  In any case, we've kept
> them separate as it makes for easier review and better bisection.
> 
> Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
> [PG: taken from preempt-rt, update subject & add a commit log]
> Signed-off-by: Paul Gortmaker <paul.gortmaker@...driver.com>

Acked-by: David S. Miller <davem@...emloft.net>
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