linux-kernel - Re: [PATCH 17/35] [PATCH 17/36] x86: Replace __get_cpu

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Message-ID: <20140826181037.GZ31659@mtj.dyndns.org>
Date:	Tue, 26 Aug 2014 14:10:37 -0400
From:	Tejun Heo <tj@...nel.org>
To:	Christoph Lameter <cl@...ux.com>
Cc:	akpm@...uxfoundation.org, rostedt@...dmis.org,
	linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Thomas Gleixner <tglx@...utronix.de>, x86@...nel.org,
	"H. Peter Anvin" <hpa@...ux.intel.com>
Subject: Re: [PATCH 17/35] [PATCH 17/36] x86: Replace __get_cpu_var uses

On Sun, Aug 17, 2014 at 12:30:40PM -0500, Christoph Lameter wrote:
> __get_cpu_var() is used for multiple purposes in the kernel source. One of
> them is address calculation via the form &__get_cpu_var(x).  This calculates
> the address for the instance of the percpu variable of the current processor
> based on an offset.
> 
> Other use cases are for storing and retrieving data from the current
> processors percpu area.  __get_cpu_var() can be used as an lvalue when
> writing data or on the right side of an assignment.
...
> Cc: Thomas Gleixner <tglx@...utronix.de>
> Cc: x86@...nel.org
> Acked-by: H. Peter Anvin <hpa@...ux.intel.com>
> Acked-by: Ingo Molnar <mingo@...nel.org>
> Signed-off-by: Christoph Lameter <cl@...ux.com>

(Please disregard the ones I posted for v1 of the patch series)

Applied to percpu/for-3.18-consistent-ops.  Please let me know if this
patch should be routed differently.  Note that this patch was to be
applied to percpu/for-3.17 but delayed due to build issues caused by
cpumask_var_t.

Thanks.

-- 
tejun
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