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[2a02:3100:a8e9:c501:45ee:6f60:3fc5:4072]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-49fd8b9fc5asm11550875e9.5.2026.09.21.11.51.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 21 Sep 2026 11:51:25 -0700 (PDT) Date: Mon, 21 Sep 2026 20:51:24 +0200 From: Karl Mehltretter To: SJ Park Cc: Andrew Morton , Lian Wang , Kunwu Chan , damon@lists.linux.dev, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 1/2] mm/damon/core: score an unmeasured PSI goal as not achieved for the temporal tuner Message-ID: References: <20260919155342.85699-1-sj@kernel.org> Precedence: bulk X-Mailing-List: damon@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260919155342.85699-1-sj@kernel.org> On Sat, Sep 19, 2026 at 08:53:41AM +0100, SJ Park wrote: > And the apply interval (or, next_apply_sis) is extended for each commit, in > damon_set_attrs(). Hence, the problem can still happen. > Thank you for explaining the apply interval. So the PSI measurement period can exceed the quota reset interval. > > full commit zeroes esz, esz_bp and the charge state of the running > > schemes. Please correct me if I read this wrong. I can send a > > separate patch for that. > > I don't really understand the problem. Could you please further elaborate? > I posted this as a separate patch series with KUnit tests: https://lore.kernel.org/r/20260921003047.12041-1-kmehltretter@gmail.com/ Thanks, Karl