From: K. Y. Srinivasan <kys@microsoft.com>
Date: Wed, 9 Apr 2014 01:45:54 +0000 (-0700)
Subject: Drivers: hv: vmbus: Implement per-CPU mapping of relid to channel
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~39^2~38^2~29
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3a28fa35d6658703cd26f9c16aaea0eae06afd40;p=pandora-kernel.git

Drivers: hv: vmbus: Implement per-CPU mapping of relid to channel

Currently the mapping of the relID to channel is done under the protection of a
single spin lock. Starting with ws2012, each channel is bound to a specific VCPU
in the guest. Use this binding to eliminate the spin lock by setting up
per-cpu state for mapping relId to the channel.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

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