Messages in this thread | | | Date | Tue, 3 Dec 2002 12:21:23 -0500 (EST) | From | "Calin A. Culianu" <> | Subject | Re: SMP Pentium4 -- PAUSE Instruction |
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:) Oh. Don't I feel like I hit the panic button too early... :/
-Calin
On 3 Dec 2002, Arjan van de Ven wrote:
> On Tue, 2002-12-03 at 16:42, Calin A. Culianu wrote: > > > Is this instruction being used in spin-wait loops? For some reason, I am > > having a hard time figuring out whether or not it is being used. There is > > a rep_nop() in processor.h.. but I can't determine if that is being called > > for spin lock lock/unlock code. > > check cpu_relax() all over the kernel :) > and the spinlock code uses it inside it's own asm directly, not via > rep_nop() > >
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