From: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Date: Mon, 3 Oct 2011 18:01:46 +0000 (-0700)
Subject: jump_label: add arch_jump_label_transform_static() to optimise non-live code updates
X-Git-Tag: v3.2-rc1~18^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=20284aa77c0f6227da4783a920b72dc61d4bcc09;p=pandora-kernel.git

jump_label: add arch_jump_label_transform_static() to optimise non-live code updates

When updating a newly loaded module, the code is definitely not yet
executing on any processor, so it can be updated with no need for any
heavyweight synchronization.

This patch adds arch_jump_label_static() which is implemented as
arch_jump_label_transform() by default, but architectures can override
it if it avoids, say, a call to stop_machine().

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Acked-by: Jason Baron <jbaron@redhat.com>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
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