Messages in this thread | | | Date | Tue, 16 Dec 2014 16:15:21 +0100 | From | Jesper Dangaard Brouer <> | Subject | Re: [PATCH 3/7] slub: Do not use c->page on free |
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On Tue, 16 Dec 2014 08:53:08 -0600 (CST) Christoph Lameter <cl@linux.com> wrote:
> On Tue, 16 Dec 2014, Joonsoo Kim wrote: > > > > Like this: > > > > > > return d > 0 && d < page->objects * s->size; > > > > > > > Yes! That's what I'm looking for. > > Christoph, how about above change? > > Ok but now there is a multiplication in the fast path.
Could we pre-calculate the value (page->objects * s->size) and e.g store it in struct kmem_cache, thus saving the imul ?
-- Best regards, Jesper Dangaard Brouer MSc.CS, Sr. Network Kernel Developer at Red Hat Author of http://www.iptv-analyzer.org LinkedIn: http://www.linkedin.com/in/brouer
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