Re: [POLL] SLAB : Are the 32 and 192 bytes caches really usefull on x86_64 machines ?

Keith Owens
2005-12-29T01:50:19Z

Dave Jones (on Wed, 28 Dec 2005 20:29:15 -0500) wrote:
>
> > Something like this:
> >
> > http://lwn.net/Articles/124374/
>
>One thing that really sticks out like a sore thumb is soft_cursor()
>That thing gets called a *lot*, and every time it does a kmalloc/free
>pair that 99.9% of the time is going to be the same size alloc as
>it was the last time. This patch makes that alloc persistent
>(and does a realloc if the size changes).
>The only time it should change is if the font/resolution changes I think.

Can soft_cursor() be called from multiple processes at the same time,
in particular with dual head systems? If so then a static variable is
not going to work.