Re: [patch] big IRQ lock removal, 2.5.27-G0

From: Ingo Molnar (mingo@elte.hu)
Date: Tue Jul 23 2002 - 18:54:49 EST


On Wed, 24 Jul 2002, Ingo Molnar wrote:

> > local_bh_disable() is rare (i think), and do_softirq() checks
> > in_interrupt().
>
> but still we dont want to call do_softirq() all the time. local_bh_enable
> is used in quite performance-sensitive networking code.

in fact the in_interrupt() check in do_softirq() should never trigger with
the latest patch applied - i'll put a debugging printk there and we can
remove it after some time. This will speed things up a bit.

        Ingo

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