From: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Date: Thu, 21 Aug 2008 13:14:55 +0000 (-0700)
Subject: rcu: use irq-safe locks
X-Git-Tag: v2.6.28-rc1~723^2~9
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=275a89bdd3868af3008852594d2e169eaf69441b;p=pandora-kernel.git

rcu: use irq-safe locks

Some earlier tip/core/rcu patches caused RCU to incorrectly enable irqs
too early in boot.  This caused Yinghai's repeated-kexec testing to
hit oopses, presumably due to so that device interrupts left over from
the prior kernel instance (which would oops the newly booting kernel
before it got a chance to reset said devices).  This patch therefore
converts all the local_irq_disable()s in rcuclassic.c to local_irq_save().

Besides, I never did like local_irq_disable() anyway.  ;-)

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

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