Re: [PATCH 0/9] psi: pressure stall information for CPU, memory, and IO v4

From: Peter Zijlstra
Date: Tue Oct 23 2018 - 13:41:32 EST

On Tue, Oct 23, 2018 at 01:29:37PM -0400, Johannes Weiner wrote:
> On Thu, Oct 18, 2018 at 07:07:10PM -0700, Andrew Morton wrote:
> > On Tue, 28 Aug 2018 13:22:49 -0400 Johannes Weiner <hannes@xxxxxxxxxxx> wrote:
> >
> > > This version 4 of the PSI series incorporates feedback from Peter and
> > > fixes two races in the lockless aggregator that Suren found in his
> > > testing and which caused the sample calculation to sometimes underflow
> > > and record bogusly large samples; details at the bottom of this email.
> >
> > We've had very little in the way of review activity for the PSI
> > patchset. According to the changelog tags, anyway.
> Peter reviewed it quite extensively over all revisions, and acked the
> final version. Peter, can we add your acked-by or reviewed-by tag(s)?

I don't really do reviewed by; but yes, I thought I already did; lemme

> The scheduler part accounts for 99% of the complexity in those
> patches. The mm bits, while somewhat sprawling, are mostly mechanical.

Ah, I now see my mistake;

I forgot to include an actual tag therein. My bad.

Acked-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>