Re: [PATCH v3 1/3] arch, x86, tsc deadline clockevent dev: reduce frequency roundoff error

[Peter Zijlstra]

On Wed, Jul 13, 2016 at 03:03:42PM +0200, Nicolai Stange wrote:

>               clockevents_config_and_register(levt,
> +                                             (u32)(((u64)tsc_khz * 1000) /
> +                                                     TSC_DIVISOR),
>                                               0xF, ~0UL);

div_u64() perhaps ?