Messages in this thread | | | Date | Wed, 25 Apr 2001 15:20:30 +0200 | From | Jamie Lokier <> | Subject | Re: [: Re: generic rwsem [Re: Alpha "process table hang"]] |
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Linus Torvalds wrote: > For i386 and i486, there is no reason to try to maintain a complex fast > case. The machines are unquestionably going away - we should strive to not > burden them unnecessarily, but we should _not_ try to save two cycles. ... > Icache is also precious on the 386, which has no L2 in 99% of all cases. > Make it out-of-line.
AFAIK, only some 386 clones have a cache -- the Intel ones do not. Therefore saving icache is not an issue, and the cycle cost of an out of line call is somewhat more than two cycles.
-- Jamie - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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