On Tue, Feb 19, 2013 at 7:20 PM, David Shwatrz <[email protected]> wrote: > Hi, kernel newbies, > > We have: > #define cpu_relax() asm volatile("rep; nop") > in arch/x86/boot/boot.h. > > Why don't we use the PAUSE assembler instruction here ?
Just guessing, maybe rep+nop could do better power saving because processor is considered as idle. -- regards, Mulyadi Santosa Freelance Linux trainer and consultant blog: the-hydra.blogspot.com training: mulyaditraining.blogspot.com _______________________________________________ Kernelnewbies mailing list [email protected] http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
