Messages in this thread |  | | | Date | Wed, 14 May 2008 14:16:41 -0700 | | From | "H. Peter Anvin" <> | | Subject | Re: [announce] "kill the Big Kernel Lock (BKL)" tree | |
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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