Re: [PATCH 8/9] psi: pressure stall information for CPU, memory, and IO
From: Peter Zijlstra <peterz@infradead.org>
Date: 2018-08-03 17:15:51
Also in:
cgroups, lkml
On Wed, Aug 01, 2018 at 11:19:57AM -0400, Johannes Weiner wrote:
+ /* total= */ + for (s = 0; s < NR_PSI_STATES - 1; s++) + group->total[s] += div_u64(deltas[s], max(nonidle_total, 1UL));
Just a nit; probably not worth fixing. This looses the remainder of that division. But since the divisor is variable it becomes really hard to not loose something at some point.