Re: NOHZ: local_softirq_pending 08

David Miller
2009-10-11T10:38:46Z

From: Michael Buesch <mb@bu3sch.de>
Date: Sun, 11 Oct 2009 12:17:30 +0200

> On Sunday 11 October 2009 12:08:55 Johannes Berg wrote:
>> On Sun, 2009-10-11 at 17:52 +0800, Dave Young wrote:
>>
>> FWIW, I believe the bug to be in b43 and wl12x1, and not as Michael
>> thinks in the stack.
>
> If mac80211 requires BHs disabled, it should do this.

That's overhead, and %99 of drivers do not require it, and therefore
for %99 of drivers it's unnecessary overhead.

In general we avoid doing things like that. Instead, we put the
cost only where it's actually needed.