On Wed, 7 Aug 2013, Kent Overstreet wrote: > I was breaking it apart because I was using this_cpu elsewhere too - for > the bitmap of which cpus have non empty freelists.
this_cpu can be retrieved with smp_processor_id(). > Or is this_cpu_ptr() doing something smarter than per_cpu_ptr(ptr, > smp_processer_id())? There's so many variants I'm not 100% sure they're > the same. Yes it is. It uses a sepecial register that contains the offset of this cpus per cpu area instead of going through the table of all processor offsets. Its less code. -- 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/
