Messages in this thread | | | Date | Wed, 20 Mar 2013 12:17:04 -0400 (EDT) | Subject | Re: [PATCH] dynticks: avoid flow_cache_flush() interrupting every core | From | David Miller <> |
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From: Chris Metcalf <cmetcalf@tilera.com> Date: Tue, 19 Mar 2013 17:35:58 -0400
> Previously, if you did an "ifconfig down" or similar on one core, and > the kernel had CONFIG_XFRM enabled, every core would be interrupted to > check its percpu flow list for items that could be garbage collected. > > With this change, we generate a mask of cores that actually have any > percpu items, and only interrupt those cores. When we are trying to > isolate a set of cpus from interrupts, this is important to do. > > Signed-off-by: Chris Metcalf <cmetcalf@tilera.com> > --- > This change stands alone so could be taken into the net tree if > desired, but it is most useful in the context of Frederic Weisbecker's > linux-dynticks work. So it could be taken up through either tree, > but it certainly needs sign-off from someone familiar with net/core/flow.c.
I'm find with this going into the dynticks changes:
Acked-by: David S. Miller <davem@davemloft.net>
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