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imf25.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b=JDxEzSXb; spf=pass (imf25.hostedemail.com: domain of sj@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=sj@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Seal: i=1; a=rsa-sha256; d=hostedemail.com; s=arc-20220608; cv=none; t=1783643043; b=IrjFBccnY48HugAa0QWSgbmY5P4QADMh4qXltO5ituCBxZ3XOz9sG86NOUKeZHUGH50t37 l6nqxb639hX3MCSeR7jA2iKF55d6VrX5y6NgvOVMK/vI4UHwRK1eaHDD2/GSdtabcGjgOY Jf5WAadYbox3sepn40tc4D8KF+9xg6s= Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by sea.source.kernel.org (Postfix) with ESMTP id 6EAA043FE9; Fri, 10 Jul 2026 00:24:02 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 287AA1F00A3D; Fri, 10 Jul 2026 00:24:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1783643042; bh=XGD2YWf7x+bc2xuKYd61BqqesZUpM+m83fMjtL5Ub3o=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=JDxEzSXbY1Gp15IUSZTSzgJB4wKiWpCO8s2NG5+ut+qNiXQwqwaUa6JJI3hIHAaty HHNDBGvOpJJzEv5TTOy8vu5Dz2HyU1nx86ht/78bi7HFWSfVQeDgCqDLx9Ubgk8mNx BgWJhkzz4/wP+arQMf4CvMqaHQYzHLzW+frMWWOuf9ZNsJ4AOwyicq3Ph7fmx6/B48 YHGkrhxWAejDsyM1PA7s6cqXE/SB9hFEXa1MVtdFVLvorEPgupqpuUrvh9Hqks47FV YV71znycF/Wz1/whWVLSw/Gc9RIIplZjcvnMArB8AKEf3I5+ErdM6xopHVMklJQ3Yz U/MRiMQG4fmeg== From: SJ Park To: Cc: SJ Park , Andrew Morton , damon@lists.linux.dev, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [RFC PATCH v1.3 11/19] mm/damon/core: disable access monitoring when probe weights are set Date: Thu, 9 Jul 2026 17:23:37 -0700 Message-ID: <20260710002349.111414-12-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260710002349.111414-1-sj@kernel.org> References: <20260710002349.111414-1-sj@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Server: rspam08 X-Rspamd-Queue-Id: 1DB25A0002 X-Stat-Signature: zuj447gnc4j11x4x5i3uaxg4wsajon4b X-HE-Tag: 1783643042-234107 X-HE-Meta: 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 pok284+t 8+6LgvdIvxpQzJB3q+zMjn2EBk3/vmpW31Ds6KugdKAgmXsfWTHkKd8j76HKTLQ3Ja4b0CGKEUBVEo8jGa05f8FgM4MQnMHDMhNzChdER0khEQDY9RDq1zZxRgE8EMHT8tlQTZs6bw7395qS60MrGPvMhQEPtbVyidcLXCH8iWFDAklAzcZElkxebvqNx2zpNWEy3emRpprBAWB7G3ECbgXiMlcFKoJlx7NzT+Rnxr79wAXA= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: When users set probe weights, they are interested in the data attributes. Not necessarily they are interested in data access patterns. Disable the data access monitoring in the case. Signed-off-by: SJ Park --- mm/damon/core.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/mm/damon/core.c b/mm/damon/core.c index a0e6a5129fbf3..65f91e3b58d2e 100644 --- a/mm/damon/core.c +++ b/mm/damon/core.c @@ -3763,17 +3763,18 @@ static int kdamond_fn(void *data) unsigned long next_aggregation_sis = ctx->next_aggregation_sis; unsigned long next_ops_update_sis = ctx->next_ops_update_sis; unsigned long sample_interval = ctx->attrs.sample_interval; + bool access_check_disabled = damon_has_probe_weights(ctx); if (kdamond_wait_activation(ctx)) break; - if (ctx->ops.prepare_access_checks) + if (!access_check_disabled && ctx->ops.prepare_access_checks) ctx->ops.prepare_access_checks(ctx); kdamond_usleep(sample_interval); ctx->passed_sample_intervals++; - if (ctx->ops.check_accesses) + if (!access_check_disabled && ctx->ops.check_accesses) max_nr_accesses = ctx->ops.check_accesses(ctx); if (ctx->ops.apply_probes) ctx->ops.apply_probes(ctx, false, false); -- 2.47.3