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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> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260919155342.85699-1-sj@kernel.org> X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: 2D80440003 X-Stat-Signature: 674hzgwmco48cfaq3h1s3199rhfmbp6m X-Rspam-User: X-HE-Tag: 1790016688-941977 X-HE-Meta: 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 2LUDFaWF iFXRr3PoOaXEYfWTAb4aYZWkyIAoqHEV3keJNxtFlEQywBPCV907+D3u1KQ2ZU1k+qr6+vm7vKv8qs6IcgXYC9jMq4b+GfFIO6gbTDVWFMhjYSsEn8k3zEzXNPpJ3Sp9H9MwXZnqtA57mbiTIXbOKp95NtKIQ0Zn5+8LTn30fQDQjdAxwb+UKpCtwBCdXt5wf5jb9ZbpLVu3puF14HTA7f78KfUlYG2Zhv2Evn8erY5MGbyXUuV7gRfzBS2rAffuI4sH5K/r/MpzoUWtNU+sXJbujK5B9/EFdz8zrcz0qsRcxhOKdMIwmwWl3cN4Ntnbh/lKNwm4GPetZ9v/scaHLkkYQsKHbIRwtOwB5jSBmGiZt5eF+7slBtvVgVesaxLREc8DWOujXp9k3GlqJtLYYENy3sUf6stJvVa3OQkgTTF6Bv/8Jniy93LACNI+p6R3IsqdQVYqVBF9MaHFmBeWXYAZ51eeijzECG3b1nickQw4qKYcurPJ4CV5+8+ZvgJGsGLypQSZrzqapiJi+daI7iuoHZ8FQ+SseUDEd4A5PDpEUI0xNDJ+69UmZYeIgI3qPgoH+99L4lf2ymi+c97PqSRmXYQ== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: 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