Re: [PATCH 39 of 39] IB/ipath - use streaming copy in RDMAinterrupt handler to reduce packet loss

[David Miller]

From: Bryan O'Sullivan <bos@xxxxxxxxxxxxx>
Date: Thu, 29 Jun 2006 14:59:37 -0700

> It could, indeed.  In fact, we had that discussion here before I sent
> this patch in.  It presumably wants to live in lib/, and acquire a more
> generic name.  What name will capture the uncached-read-but-cached-write
> semantics in a useful fashion?  memcpy_nc?

I'm not good with names :-)

Note that there also might be cases where using such a memcpy
variant might be the wrong thing to do.  For example, for a very
tightly coupled CMT cpu implementation which has the memory controller,
L2 cache, PCI controller, etc. all on the same die and the PCI controller
makes use of the L2 cache just like the cpu threads do, using this
kind of memcpy would always be the wrong thing to do.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/