Re: [PATCH] kmalloc_percpu

Rusty Russell (rusty@rustcorp.com.au)
Tue, 06 May 2003 14:11:27 +1000

In message <20030505185248.3c3a478f.akpm@digeo.com> you write:
> Rusty Russell <rusty@rustcorp.com.au> wrote:
> >
> > > +#define PERCPU_POOL_SIZE 32768
> > >
> > > What's this?
> >
> > OK. It has a size restriction: PERCPU_POOL_SIZE is the maximum total
> > kmalloc_percpu + static DECLARE_PER_CPU you'll get, ever. This is the
> > main downside. It's allocated at boot.
>
> And is subject to fragmentation.

Absolutely. However, we're looking at an allocation at module insert,
and maybe at each mount (if used for your fuzzy counters). Until we
see this in practice, I don't think complicating the allocator is
worth it.

Cheers,
Rusty.

--
  Anyone who quotes me in their sig is an idiot. -- Rusty Russell.
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