From: Greg Ungerer <gerg@snapgear.com>
Date: Fri, 3 Jun 2005 01:35:20 +0000 (+1000)
Subject: [PATCH] m68knommu: fix scheduling and race problems in idle loop
X-Git-Tag: v2.6.12-rc6~10
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b05a720b374ac6af05b2fd4c70bb2c61a9f461ca;p=pandora-kernel.git

[PATCH] m68knommu: fix scheduling and race problems in idle loop

Re-work the m68knommu specific idle code according to suggestions
from Nick Piggin <nickpiggin@yahoo.com.au>.

A couple of rules that we need to follow:

1. Preempt should now disabled over idle routines. Should only be enabled
to call schedule() then disabled again.

3. When cpu_idle finds (need_resched() == 'true'), it should call schedule().
It should not call schedule() otherwise.

Also fix interrupt locking around the need_resched() and cpu stop state
so that there is no race condition.

Signed-off-by: Greg Ungerer <gerg@snapgear.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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