From: Ben Hutchings <bhutchings@solarflare.com>
Date: Wed, 19 Jan 2011 11:03:25 +0000 (+0000)
Subject: lib: cpu_rmap: CPU affinity reverse-mapping
X-Git-Tag: v2.6.39-rc1~468^2~482
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c39649c331c70952700f99832b03f87e9d7f5b4b;p=pandora-kernel.git

lib: cpu_rmap: CPU affinity reverse-mapping

When initiating I/O on a multiqueue and multi-IRQ device, we may want
to select a queue for which the response will be handled on the same
or a nearby CPU.  This requires a reverse-map of IRQ affinity.  Add
library functions to support a generic reverse-mapping from CPUs to
objects with affinity and the specific case where the objects are
IRQs.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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