Re: [BENCHMARK] 2.5.47{-mm1} with contest

From: William Lee Irwin III (wli@holomorphy.com)
Date: Thu Nov 21 2002 - 12:26:50 EST


On Thu, Nov 21, 2002 at 09:21:47AM -0800, Andrew Morton wrote:
> We'd buy a bit by arranging for the in-kernel copy of the fp state
> to have the same layout as the hardware. That way it can be done in
> a single big, fast, well-aligned slurp. But for some reason that code has
> to convert into and out of a different representation.
> But the real low-hanging fruit here is the observation that the
> test application doesn't use floating point!!!
> Maybe we need to take an fp trap now and then to "poll" the application
> to see if it is still using float.

Um... both of these are in the "wtf?? it doesn't do that now??" category.

Bill
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