On Sun, 2007-02-18 at 10:50 +0100, Alex Riesen wrote:
> > The arch/i386/kernel/process.c part of the patch should apply to 2.6.20
> > as well. Can you check if the problem is there too ?
>
> It does not apply and does not look trivially hackable.
> The code for cpu_idle was introduced in 2ff2d3d7 "i386: add idle notifier".
Here you go.
tglx
Index: linux-2.6.20/arch/i386/kernel/process.c
===================================================================
--- linux-2.6.20.orig/arch/i386/kernel/process.c
+++ linux-2.6.20/arch/i386/kernel/process.c
@@ -189,6 +189,13 @@ void cpu_idle(void)
play_dead();
__get_cpu_var(irq_stat).idle_timestamp = jiffies;
+
+ local_irq_disable();
+ if (local_softirq_pending() && !need_resched())
+ printk(KERN_ERR
+ "Idle: local softirq pending: %04x\n",
+ local_softirq_pending());
+ local_irq_enable();
idle();
}
preempt_enable_no_resched();
-
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