On Sat, 29 Dec 2007, Andi Kleen wrote: > Anyways the difference between the x86 percpu.h and the generic one is > that x86-64 uses a short cut through the PDA to get the current cpu > offset for the current CPU case. The generic one goes through > smp_processor_id()->array reference instead.
No the patch also uses the pda. > I would request that this optimization is not being removed > without suitable replacement in the same patchkit. The optimization was not removed __my_cpu_offset is used to calculate the current offset which is using the pda. #define __my_cpu_offset read_pda(data_offset) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
