On Mon, Jul 28, 2014 at 12:48:37PM +0200, Peter Zijlstra wrote: > > +static __always_inline u64 decay_load(u64 val, u64 n) > > +{ > > + if (likely(val <= UINT_MAX)) > > + val = decay_load32(val, n); > > + else { > > + val *= (u32)decay_load32(1 << 15, n); > > + val >>= 15; > > + } > > + > > + return val; > > +} > > Please just use mul_u64_u32_shr(). > > /me continues reading the rest of it..
Good. Since 128bit is considered in mul_u64_u32_shr, load_sum can afford more tasks :) -- 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/