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 EF9543B14D0; Mon, 22 Jun 2026 14:22:12 +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=1782138133; cv=none; b=XnNY5GVq+yjetLRuiEH1ITKcXlYRv6CFEffzHaafAPdMVlzZR6U/UXDNoZNLMVZ7WxrSUgP7clRk3KY5fS9cPXDaZQtesNjoBteUrkTS0GSNzSkEmoArHeRXqvLa9zI3E4qofa0NX4o+m6p9xpd05OjvfUkuFDxB2+QVvx+86Wg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782138133; c=relaxed/simple; bh=IuyX0Vj8VrqZZEKVWTsXa6DquK4YXIC7ivYb/y6S/rk=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=D/KLGEASy7PKuu4yXRxEgMzs/rU63lC3LUt0bvGdIiYK6G+CmwRJO85x4sF/MEBvICAqaTCqev2axb4dbccFopWFuGCLIBNqbUtZ8HVlLJ7Du3AP385+u+2JiiG6m4babKK+4Dg08QbGlrvoJXYgObVv9P208+CPQcv3lVYMbWo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=dfU+OCmD; 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="dfU+OCmD" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C54891F00A3D; Mon, 22 Jun 2026 14:22:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1782138132; bh=xNrJYEZHyN6uUA2mSDTyP7l+hkeko4b5LYoh0CGNL34=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=dfU+OCmDaxVZKRtX1orFdupKSlZbgcq8Pf0HOmShMK7Cj8CfbCuEtFJeEoH4xMIzU ZTNzFI29KG3g/eBR3Kd/V484JrRBuhgFbx+h9aLfMFO2zq7pn7kSPpekmdSBEPbc1G NGF9IxvyQxefnjL2sdPvbOKQUAxYTyIbNFRX21Mz9ewTMUMH2K1lRHrvbJtv4VHIsf 4Rmx8lO/W/x39DokyfrkyhWdvYPVHklVbiVlqa+jWqDbH7RxnQ1AkkrN80imlAieNZ 1a5GH3IQ96fnXJeGdHXFHm375pX0P13QLguYntWcc4vOiyNHjGUr0k6U/Yk5meGjft tJA81EBxt+VIw== 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 v1.3 18/18] mm/damon: remove damon_region->nr_accesses_bp Date: Mon, 22 Jun 2026 07:21:38 -0700 Message-ID: <20260622142139.30269-19-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260622142139.30269-1-sj@kernel.org> References: <20260622142139.30269-1-sj@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org 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 a09ee8a09b5af..fc3d467dc2e34 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 5b5375b035149..4f7954b383d18 100644 --- a/mm/damon/core.c +++ b/mm/damon/core.c @@ -3587,8 +3587,7 @@ 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