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 4C47C501F53; Mon, 7 Sep 2026 17:12:26 +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=1788801147; cv=none; b=gYo7LHVyNjkMCZGViVLq2PNR8hRb/5u3db6fzkfshegEBBpU26IKBq9hVR8ZogaHS2F6bVYYZGCatn/nw9bGlOoRyIoRbLL57vrv7uQX0Zyo5TVwYZzASulx4+KFEru4rH6MjeHMaQSF4i/hu/b2ctSu6lDnHbrp7r8vtjNnVBs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788801147; c=relaxed/simple; bh=Y1BNgJTPI/nQKjFvvasfGPi5MdMWj2Yvyi9brUFOviM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=dVbGR0b6mcSlOsF/tGQTaJNvhNdKgQ2nXLFCHJg6BsXC5ze5IX+AFZutDx/Ynr3Oo3zCsa8ad0WF/N21HdjLoo2h/AxEhjEGWaODeBi0E/+WPEIHqGvIm50RePMi41JKPawBs1qE6xWRj5o7h5NwisT+f1xlN+ruR8zjtYeRJaI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=KHBRoN/J; 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="KHBRoN/J" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B364C1F00A3E; Mon, 7 Sep 2026 17:12:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1788801145; bh=Dxxa5wP8u6+NzrCeSUKIx091CaUINS3Abxx04SVxcHc=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=KHBRoN/JWf+JSmblQjMDXNP3atlUTDvNsd4f4vJv+3KdhlTwqVCDKx4TLP5HdJMh7 SZCE1v99rIiKmttJvXs0hQmgyeiICbIfE25qXhypdvBuI7kqoG+Vc/mjPjDy/954BN pqDCLAOXybS3PKOZT9s9efM7vhJ8xnm+RKldCioPS8IRAeBZ8GKqdyLevetfjmlNSV F9f9eDyaUSNODVeD2BZn0Fym77oZj/rSloYHl3AF31Goqky1lq1JkiYdLzS2yewKmV GY2qrMU5jJDYPXyEFILOEaFPcyB8ClW0xf1i6cvH6A8NLIQuMMS/JURU8T1c9zJL4R E/ovuggBfCETw== From: SJ Park To: Cc: SJ Park , damon@lists.linux.dev, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [RFC PATCH v2 1/7] mm/damon/api: introduce DAMOS_FILTER_TYPE_PROBE_HITS_WSUM Date: Mon, 7 Sep 2026 10:12:10 -0700 Message-ID: <20260907171218.101430-2-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260907171218.101430-1-sj@kernel.org> References: <20260907171218.101430-1-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 | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/include/linux/damon.h b/include/linux/damon.h index 871d26adf6ae5..1deda16bb70b5 100644 --- a/include/linux/damon.h +++ b/include/linux/damon.h @@ -399,6 +399,7 @@ 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 @@ -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