percpu: add documentation on this_cpu operations

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Document the rationale and the way to use this_cpu operations.

V2: Improved after feedback from Randy Dunlap

v3: Further spelling fixes from Randy.  Paragraphs refilled to 75
    column.

tj: Added .txt file extension to the document.

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

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Christoph Lameter 2013-04-04 14:41:08 +00:00 • committed by Tejun Heo

parent 07961ac7c0

commit a1b2a555d6

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Documentation/this_cpu_ops.txt

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