Re: [PATCH v7 01/15] sched/core: uclamp: Add CPU's clamp buckets refcounting
From: Peter Zijlstra
Date: Tue Mar 12 2019 - 11:21:09 EST
On Fri, Feb 08, 2019 at 10:05:40AM +0000, Patrick Bellasi wrote:
> +/* Integer ceil-rounded range for each bucket */
> +#define UCLAMP_BUCKET_DELTA ((SCHED_CAPACITY_SCALE / UCLAMP_BUCKETS) + 1)
Uhm, should that not me ((x+y-1)/y), aka. DIV_ROUND_UP(x,y) ?
The above would give 4 for 9/3, which is clearly buggered.