Re: [PATCH 1/9] time: Condense timekeeper.xtime into xtime_sec

[Christoph Lameter]

On Thu, 1 Mar 2012, John Stultz wrote:

> +static inline void tk_normalize_xtime(struct timekeeper *tk)
> +{
> +	while (tk->xtime_nsec >= ((u64)NSEC_PER_SEC << tk->shift)) {
> +		tk->xtime_nsec -= (u64)NSEC_PER_SEC << tk->shift;
> +		tk->xtime_sec++;
> +	}
> +}

Could we avoid the loop?

y = ((u64)NSEC_PER_SEC << tk->shift));
tk->xtime_sec += tk->xtime_nsec / y;
tk->xtime_nsec %= y;

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/