Hi Thomas,

At 06/06/2018 04:04 PM, Thomas Gleixner wrote:
On Wed, 6 Jun 2018, Dou Liyang wrote:

Hi Thomas,

At 06/05/2018 07:41 PM, Thomas Gleixner wrote:
On Tue, 5 Jun 2018, Dou Liyang wrote:
+{
+       if (unlikely(irqd_is_setaffinity_pending(irqd)))

Affinity pending is also judged in

+               irq_move_irq(irqd);

If we can remove the if(...) statement here

That requires to fix all call sites in ia64 and that's why I didn't.  But

I didn't express clearly, I meant remove the if(...) statement from
apic_ack_irq(), it doesn't require to fix the call sites in ia64.

I put the check there on purpose as I explained in the changelog:

    Making the invocation of irq_move_irq() conditional avoids the out of
    line call if the pending bit is not set.


I completely understand now, thank you so much. :-)

Thanks,
        dou

Thanks,

        tglx





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