Re: Question about interrupts

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]



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


[Newbies FAQ]     [Linux Kernel Mentors]     [Linux Kernel Development]     [IETF Annouce]     [Git]     [Networking]     [Security]     [Bugtraq]     [Photo]     [Yosemite]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux Networking]     [Linux RAID]     [Linux SCSI]     [Linux ACPI]

Add to Google Powered by Linux