From: Thomas Gleixner <tglx@linutronix.de>
Date: Fri, 7 Nov 2008 10:06:00 +0000 (+0100)
Subject: irq: call __irq_enter() before calling the tick_idle_check
X-Git-Tag: v2.6.28-rc5~78^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ee5f80a993539490a07477ff2526bf62c503fbb4;p=pandora-kernel.git

irq: call __irq_enter() before calling the tick_idle_check

Impact: avoid spurious ksoftirqd wakeups

The tick idle check which is called from irq_enter() was run before
the call to __irq_enter() which did not set the in_interrupt() bits in
preempt_count. That way the raise of a softirq woke up softirqd for
nothing as the softirq was handled on return from interrupt.

Call __irq_enter() before calling into the tick idle check code.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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