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 693CA48595B; Fri, 11 Sep 2026 13:55:19 +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=1789134920; cv=none; b=cn2p24v3e8ZfxhvVEshf7npcCUM6v+Lc4ZXH7cEpM0PEjuQ1lDc45ZJSdCymUkBX9KZpOAtdkhyRPT70TIC3U+maSD2W8IMVU2ZwzfWFshltHcxTFsAysAp0iAAfGnV/Lc95fboJ6/EEQWE0JtA6iblJdu1xX9HW5DwT0gHQq/A= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789134920; c=relaxed/simple; bh=xmndBrhMhbpyzJe/GZ7fJhit8cA77QIBUB9hkxLgGfQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=R0E6WXsJylu2JmAr8IP7XyQvulRrTDtqEp/oed5Ly0On1iMECC/vRZgpNr89S2bnEA52Kzur5EvfYzBvFhsoKLUXdu+Xb1WC3Olv9hsx8MrmtsC2wv8sftQTcbc+9Oh+zp3Pf4701cIeU2c7YNey3BeAer4PESTGpSbLNFXhUic= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=WMUgkNxf; 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="WMUgkNxf" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D16CE1F00898; Fri, 11 Sep 2026 13:55:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1789134919; bh=kMIWiALSFrn/d/Ne4UrnEpuxkZ1ESBf36wruD1e+2pE=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=WMUgkNxfjifF94LFMFYVhaCi84XVweVc7zQ66jg6AZ6H0gDuYkPI8eP3fRGR5miwf SuRj/CA1VhZFx+2Yp+MOd6bTF0fyg2ByVLOpaQzKPNTCGYqc98A9ZEaCG3KqJx4YRB sdaXP47joRJ7ie786UeULCNAzz2mZ/R4GcogsGoe9kPHnh9HCnrYxZL+Roa0o4EngB ceMNfCE0kRSMiPxjEkqqlL2v3hjNvusV1vqtqpIzkHhcMXt+JEDHR+/g/I9Kp3Rqma pjb28j7PD4HPuyEVdJ+YufORVOhPtW3Vx5AL8023OM1GOtyD0cMzg7BiBAAU0DlIfl 98PtWpmtM8Y+w== From: SJ Park To: Andrew Morton Cc: SJ Park , damon@lists.linux.dev, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH v2 1/7] mm/damon/api: introduce DAMOS_FILTER_TYPE_PROBE_HITS_WSUM Date: Fri, 11 Sep 2026 06:55:03 -0700 Message-ID: <20260911135510.96914-2-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260911135510.96914-1-sj@kernel.org> References: <20260911135510.96914-1-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 Update DAMON kernel API to introduce new DAMOS core filter type, PROBE_HITS_WSUM. It will allow API callers to describe the DAMOS action target regions based on their probe_hits weighted sum. For describing the filtering target weighted sum range, add two type-dependent union fields to damos_filter. Signed-off-by: SJ Park --- include/linux/damon.h | 20 ++++++++++++++------ 1 file changed, 14 insertions(+), 6 deletions(-) diff --git a/include/linux/damon.h b/include/linux/damon.h index 16800b3dc379b..9e84bdeb5616d 100644 --- a/include/linux/damon.h +++ b/include/linux/damon.h @@ -399,14 +399,15 @@ struct damos_stat { * @DAMOS_FILTER_TYPE_UNMAPPED: Unmapped pages. * @DAMOS_FILTER_TYPE_ADDR: Address range. * @DAMOS_FILTER_TYPE_TARGET: Data Access Monitoring target. + * @DAMOS_FILTER_TYPE_PROBE_HITS_WSUM: probe_hits weighted sum range. * @NR_DAMOS_FILTER_TYPES: Number of filter types. * - * All types except &DAMOS_FILTER_TYPE_ADDR and &DAMOS_FILTER_TYPE_TARGET - * are handled by the underlying &struct damon_operations as a part of scheme - * action trying, and therefore accounted as 'tried'. In contrast, - * &DAMOS_FILTER_TYPE_ADDR and &DAMOS_FILTER_TYPE_TARGET filters are handled - * by the core layer before trying of the action, and therefore not accounted - * as 'tried'. + * All types except &DAMOS_FILTER_TYPE_ADDR, &DAMOS_FILTER_TYPE_TARGET and + * &DAMOS_FILTER_TYPE_PROBE_HITS_WSUM are handled by the underlying &struct + * damon_operations as a part of scheme action trying, and therefore accounted + * as 'tried'. In contrast, &DAMOS_FILTER_TYPE_ADDR and + * &DAMOS_FILTER_TYPE_TARGET filters are handled by the core layer before + * trying of the action, and therefore not accounted as 'tried'. * * Support for the operations-handled filters depends on the running * &struct damon_operations. @@ -420,6 +421,7 @@ enum damos_filter_type { DAMOS_FILTER_TYPE_UNMAPPED, DAMOS_FILTER_TYPE_ADDR, DAMOS_FILTER_TYPE_TARGET, + DAMOS_FILTER_TYPE_PROBE_HITS_WSUM, NR_DAMOS_FILTER_TYPES, }; @@ -434,6 +436,8 @@ enum damos_filter_type { * &damon_ctx->adaptive_targets if @type is * DAMOS_FILTER_TYPE_TARGET. * @sz_range: Size range if @type is DAMOS_FILTER_TYPE_HUGEPAGE_SIZE. + * @range_min: Minimum value of range arguments. + * @range_max: Maximum value of range arguments. * * Before applying the &damos->action to a memory region, DAMOS checks if each * byte of the region matches to this given condition and avoid applying the @@ -450,6 +454,10 @@ struct damos_filter { struct damon_addr_range addr_range; int target_idx; struct damon_size_range sz_range; + struct { + unsigned long range_min; + unsigned long range_max; + }; }; /* private: */ /* List head for siblings. */ -- 2.47.3