Re: [announce] "kill the Big Kernel Lock (BKL)" tree

[H. Peter Anvin]

Andi Kleen wrote:
> Alan Cox wrote:
> > > Most of the legacy users are unlikely to be latency problems,
> > > simply because only very few people (or nobody) still has that hardware
> > > and the code will never run.
> > >
> > > Also I wouldn't lose sleep over e.g. let ISDN continue using BKL forever.
> > Most 
>
> Most?
>
> > of the legacy users inflict that locking on other code - eg the ISN
> > use of the BKL directly impacts on the tty layer work.
>
> So you just stick unlock_kernel()/lock_kernel() around the call
> to TTY (or similar to the entry points)

... assuming that the ISDN code doesn't assume lock continuity across 
the TTY call.

	-hpa
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