On Sat, 7 Jul 2012, Joonsoo Kim wrote: > __alloc_pages_direct_compact has many arguments so invoking it is very costly. > And in almost invoking case, order is 0, so return immediately. >
If "zero cost" is "very costly", then this might make sense. __alloc_pages_direct_compact() is inlined by gcc. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/