On Fri, Jul 29, 2011 at 3:16 PM, manish honap <manish_honap_vit@yahoo.co.in> wrote:

Hello all,

When interrupts are handled through interrupt gate cpu automatically clears IF flag.

but to allow nesting kernel sets the IF flag in handle_irq_event - for 2.6.11

but in 2.6.39 how the interrupts are re-enabled so as to facilitate nesting of interrupts I am unable to find local_irq_enable in do_IRQ() I think in handle_IRQ_event event again interrupts are enabled if (!(action->flags & IRQF_DISABLED)) local_irq_enable_in_hardirq();

Thanks in advance.

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