In article <3C7D3E5A.490D939D@zip.com.au>,
Andrew Morton <akpm@zip.com.au> wrote:
>"Martin J. Bligh" wrote:
>>
>> Seeing as people seem to be interested ... there are some big holders
>> of BKL around too - do_exit shows up badly (50ms in the data Hanna
>> posted, and I've seen that a lot before).
>
>That'll be where exit() takes down the tasks's address spaces.
>zap_page_range(). That's a nasty one.
No, lock_kernel happens after exit_mm, and in fact I suspect it's not
really needed at all any more except for the current "sem_exit()". I
think most everything else is threaded already.
(Hmm.. Maybe disassociate_ctty() too).
So minimizing the BLK footprint in do_exit() should be pretty much
trivial: all the really interesting stuff should be ok already.
Linus
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This archive was generated by hypermail 2b29 : Thu Feb 28 2002 - 21:00:39 EST