From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9B509331ECF; Sat, 20 Jun 2026 17:23:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781976202; cv=none; b=Z1iGMm+copq1Lci1Dgbb5gBEO3fqYTcn6Wd2iPHGDxXOw5RmOzGr93i+TYud2mh3aPO53hYD7/up/NdVjlxLKqan7+G0rHKJByA/rgAJeabU/W8fD87hDcLUzpYatpwS6Re7BNC9WvuQ7XkCoe/55J71SqxTyn/Tn7hk3E0OO2I= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781976202; c=relaxed/simple; bh=Okct9WxhDCRl3pYyIXEvkAEkUhK1r6Acebvy/YPoM7Q=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=h124JDFUOlX0lGCIvIC7QaGAy3kNCd+YvaLRxG5nljySJHab+u67utNdO7xMR8bI0wDBua04yU8jNJPsbrTzCeMcUBkCOkQAidf7Jw5l7Fm2hCzn4tbiM+ewW/+4bBbaguN5tsVTLJVajTtPDoY4MuD2US7UEYXPyc6tNS1CAZk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=EoWhKPDO; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="EoWhKPDO" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 81BE81F00A3A; Sat, 20 Jun 2026 17:23:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1781976191; bh=E40P358cYrxpYfQ/+KC5PiFZHdq8eKTdsuOzYb/xPVY=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=EoWhKPDObMVUxx7K89FLrUtlZYwPL/utX18TjsuF0ZzniJ5Ct4iTEFlGy5pr5MPnl y6aTbVwIJtyzjFDlYCaBqqs6Em5VnLIcl4gcyz1Ss1YA5zTDA0pDkVKIf041eUaJJ3 7YFJNM0r7Uww7y9mnPnMLpPXYv16Si+t2mMnnDC5shMEMJaCwDplAdTT1zpYJekmX6 m8vmTeUyE2YSeqivZbkIMV3XNneYX61zlYJ+bz42qjt8RXNhUyNK1Yl1sWTq0WHk1P cuLKMT5NHP7WQP0OfdqCmwCfk3xj9d/QBxyqN2FDggFAf6WgSFcACl9yjDGgTrp9WY ghvM94y6jC56Q== From: SeongJae Park To: Cc: SeongJae Park , Andrew Morton , damon@lists.linux.dev, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [RFC PATCH v1.1 13/13] mm/damon: remove damon_region->nr_accesses_bp Date: Sat, 20 Jun 2026 10:22:43 -0700 Message-ID: <20260620172244.90953-14-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260620172244.90953-1-sj@kernel.org> References: <20260620172244.90953-1-sj@kernel.org> Precedence: bulk X-Mailing-List: damon@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit No code touches damon_region->nr_accesses_bp field. Remove it. Signed-off-by: SeongJae Park --- include/linux/damon.h | 10 ---------- mm/damon/core.c | 3 +-- 2 files changed, 1 insertion(+), 12 deletions(-) diff --git a/include/linux/damon.h b/include/linux/damon.h index 55a743d99b567..90d2910b3217a 100644 --- a/include/linux/damon.h +++ b/include/linux/damon.h @@ -47,8 +47,6 @@ struct damon_size_range { * @ar: The address range of the region. * @sampling_addr: Address of the sample for the next access check. * @nr_accesses: Access frequency of this region. - * @nr_accesses_bp: @nr_accesses in basis point (0.01%) that updated for - * each sampling interval. * @probe_hits: Number of probe-positive region samples. * @list: List head for siblings. * @age: Age of this region. @@ -61,13 +59,6 @@ struct damon_size_range { * not be done with direct access but with the helper function, * damon_update_region_access_rate(). * - * @nr_accesses_bp is another representation of @nr_accesses in basis point - * (1 in 10,000) that updated for every &damon_attrs->sample_interval in a - * manner similar to moving sum. By the algorithm, this value becomes - * @nr_accesses * 10000 for every &struct damon_attrs->aggr_interval. This can - * be used when the aggregation interval is too huge and therefore cannot wait - * for it before getting the access monitoring results. - * * @age is initially zero, increased for each aggregation interval, and reset * to zero again if the access frequency is significantly changed. If two * regions are merged into a new region, both @nr_accesses and @age of the new @@ -77,7 +68,6 @@ struct damon_region { struct damon_addr_range ar; unsigned long sampling_addr; unsigned int nr_accesses; - unsigned int nr_accesses_bp; unsigned char probe_hits[DAMON_MAX_PROBES]; struct list_head list; diff --git a/mm/damon/core.c b/mm/damon/core.c index f96f54a7f178a..abccac9e9f9e8 100644 --- a/mm/damon/core.c +++ b/mm/damon/core.c @@ -3580,8 +3580,7 @@ static int kdamond_fn(void *data) * aggregation, and make aggregation * information reset for all regions. Then, * following kdamond_reset_aggregated() call - * will make the region information invalid, - * particularly for ->nr_accesses_bp. + * will make the region information invalid. * * Reset ->next_aggregation_sis to avoid that. * It will anyway correctly updated after this -- 2.47.3