On Fri, Jul 29, 2011 at 3:56 PM, manish honap <manish_honap_vit@xxxxxxxxxxx> wrote: > Well 2.6.39 seems to have changed and the flow as I understand for interrupt > processing is > do_IRQ -> irq_enter -> handle_irq -> ... > > but in above flow i cant find local_irq_enable anywhere; is there some different > trick used to enable the interrupts ? yes in 2.6.34 i am able to find do_IRQ and handle_IRQ_event(), defined in kernel/irq/handler.c but with 2.6.39 its moved some where .Can any one please help me on this where this logic is moved. > > > > > ----- Forwarded Message ---- > From: santhosh kumars <karuna.linux@xxxxxxxxx> > To: manish honap <manish_honap_vit@xxxxxxxxxxx> > Cc: kernelnewbies@xxxxxxxxxxxxxxxxx > Sent: Fri, 29 July, 2011 3:31:10 PM > Subject: Re: Question about interrupts > > On Fri, Jul 29, 2011 at 3:16 PM, manish honap > <manish_honap_vit@xxxxxxxxxxx> 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. >> >> >> _______________________________________________ >> Kernelnewbies mailing list >> Kernelnewbies@xxxxxxxxxxxxxxxxx >> http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies >> > > _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
