From: Christoph Lameter <cl@linux.com>
Date: Tue, 14 Dec 2010 16:28:44 +0000 (-0600)
Subject: x86: this_cpu_cmpxchg and this_cpu_xchg operations
X-Git-Tag: v2.6.38-rc1~455^2~7^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7296e08abac0a22a2534a4f6e493c764f2c77583;p=pandora-kernel.git

x86: this_cpu_cmpxchg and this_cpu_xchg operations

Provide support as far as the hardware capabilities of the x86 cpus
allow.

Define CONFIG_CMPXCHG_LOCAL in Kconfig.cpu to allow core code to test for
fast cpuops implementations.

V1->V2:
	- Take out the definition for this_cpu_cmpxchg_8 and move it into
	  a separate patch.

tj: - Reordered ops to better follow this_cpu_* organization.
    - Renamed macro temp variables similar to their existing
      neighbours.

Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
---

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