Messages in this thread | | | From | Keith Owens <> | Subject | Re: How should we do a 64-bit jiffies? | Date | Tue, 23 Oct 2001 16:23:04 +1000 |
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On Tue, 23 Oct 2001 02:05:54 -0400, Brian Gerst <bgerst@didntduck.org> wrote: >Keith Owens wrote: >> You will need a spin lock around that on 32 bit systems, but that is >> true for anything that tries to do 64 bit counter updates on a 32 bit >> system. > >cmpxchg8b does, but it's a bit indirect.
Not on 386, only on 486 and above. Besides, you want to avoid arch specific asm code.
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