[ovs-git] Open vSwitch: datapath: #define local_bh_disable to preempt_disable on RT. (master)

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commit 22fcc4d5a5f2459b3edaa034dd69686399b41913
Diffs: http://openvswitch.org/cgi-bin/gitweb.cgi?p=openvswitch;a=commitdiff;h=22fcc4d5a5f2459b3edaa034dd69686399b41913
Author: Jesse Gross <jesse at nicira.com>
		
datapath: #define local_bh_disable to preempt_disable on RT.
		
We use local_bh_disable() to mean that we don't want to get
preempted or interrupted and normally it covers both situations.
However, on RT kernels local_bh_disable() becomes a no-op because
bottom halves aren't interrupts any more.  We still want the
behavior of disabling preemption so #define them to be the same
on these kernels.

Signed-off-by: Jesse Gross <jesse at nicira.com>
Acked-by: Ben Pfaff <blp at nicira.com>


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Summary of changes:
 datapath/linux-2.6/Modules.mk                      |    1 +
 .../compat-2.6/include/linux/bottom_half.h         |   19 +++++++++++++++++++
 2 files changed, 20 insertions(+), 0 deletions(-)
 create mode 100644 datapath/linux-2.6/compat-2.6/include/linux/bottom_half.h


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