Re: [PATCH][RFC] ide: pdc202xxx_new: Remove do_gettimeofday() usage for ktime_get

From: Arnd Bergmann
Date: Wed Jan 07 2015 - 16:38:00 EST


On Wednesday 07 January 2015 13:01:33 John Stultz wrote:
> + usec_elapsed = (long)ktime_to_ns(ktime_sub(end_time, start_time))/1000;
>

This should use ktime_us_delta for brevity. Doing the 32-bit division that
you have here is probably slightly more efficient because it avoids do_div(),
but it's not performance critical.

Arnd
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