Messages in this thread | | | Subject | Re: [patch] smp-2.3.30-A1, mb(), wmb(), rmb() | From | Jes Sorensen <> | Date | 26 Nov 1999 10:42:49 +0100 |
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>>>>> "Linus" == Linus Torvalds <torvalds@transmeta.com> writes:
Linus> which instead of using a read-modify-write cycle and a long Linus> immediate just uses a single write-cycle. It makes gcc allocate Linus> a word on the stack, and sometimes that might be unnecessary, Linus> but it should be smaller and faster. You might want to check Linus> out code generation..
This can actually become a bit expensive if you use mb() a lot in your code, ie. if you use __raw_writel() etc.
Jes
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