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[108.27.252.85]) by smtp.gmail.com with ESMTPSA id l28-v6sm1340308qkj.33.2018.10.23.10.29.36 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Tue, 23 Oct 2018 10:29:36 -0700 (PDT) Date: Tue, 23 Oct 2018 13:29:37 -0400 From: Johannes Weiner To: Andrew Morton Cc: Ingo Molnar , Peter Zijlstra , Linus Torvalds , Tejun Heo , Suren Baghdasaryan , Daniel Drake , Vinayak Menon , Christopher Lameter , Peter Enderborg , Shakeel Butt , Mike Galbraith , linux-mm@kvack.org, cgroups@vger.kernel.org, linux-kernel@vger.kernel.org, kernel-team@fb.com Subject: Re: [PATCH 0/9] psi: pressure stall information for CPU, memory, and IO v4 Message-ID: <20181023172937.GA21443@cmpxchg.org> References: <20180828172258.3185-1-hannes@cmpxchg.org> <20181018190710.fcea1c5f9c3b0c15d37ee762@linux-foundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20181018190710.fcea1c5f9c3b0c15d37ee762@linux-foundation.org> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Oct 18, 2018 at 07:07:10PM -0700, Andrew Morton wrote: > On Tue, 28 Aug 2018 13:22:49 -0400 Johannes Weiner 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)? The scheduler part accounts for 99% of the complexity in those patches. The mm bits, while somewhat sprawling, are mostly mechanical.