From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 AB626322B95; Mon, 8 Dec 2025 06:30:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765175448; cv=none; b=QGKUpTht96s/RdxnA4wbywIulxBNgCGXFFuvwva7ie03/MTop2ODGaIQTR6hxVFJMVOPuRDjLV3Z+bE06rdSqJgppxqKAkOkU5F1/hNvbmUCLhY4na2e1IOpfzCFoAINoUQxwlJVxgbON0JuDAD79okCx36ql2zIHcq+95bIXy4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765175448; c=relaxed/simple; bh=7LPwC6Tdvp2/F8X1UVIxGeo9+bnDQ2Da295YW1KdEhA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Xgr/j0OxeOQpDi3v/q9Ys0Jt5B6AM9uhDOy9c6ph1SrEGVrbMXVEjCFPwzh9e43jmzea7h2ufdlYBJOAI8YrhxWVuxPJDsuhqNkwQUW0F0MIDrwS13QHaNMwNgRDwnjLcNBSk+sE1woX0NMr61Tc7ClgRMWVhA/nPTQQqvQrUNw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=MiIlJ+UI; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="MiIlJ+UI" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7F421C116B1; Mon, 8 Dec 2025 06:30:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1765175447; bh=7LPwC6Tdvp2/F8X1UVIxGeo9+bnDQ2Da295YW1KdEhA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=MiIlJ+UIhaWDtXpVtWGyfXhcGkfyDG2je19PMonZ1FJur8CzHYiCsCW7W+Xz/Cs7X f0ApIzkuEp6CBnrLykZlYX1TO6xtB0Q2qb02e8WQP+kCSn5RPcThXAWAriKYeu+VEM hnWYsawXlfplP9ofPhSyiuOVPeVEEwnWGWPe1Hg54CxxzOOAxTRsA56PE/AUlObxjI 30MyNHFDj3mBswCevCm36eEGQA7rmEDvN4GP28hORUJDMs9ltF+lvxGtPiDAVSPtq2 6Q+fMHbT1daCzHKPwvNtSOZTSeBHpyUEzIKZmpUh2wKwFU+IAW1LW4jwd1r9nLW9db rLZwHbnPPr+EA== From: SeongJae Park To: Cc: SeongJae Park , "Liam R. Howlett" , Andrew Morton , David Hildenbrand , Jonathan Corbet , Lorenzo Stoakes , Michal Hocko , Mike Rapoport , Suren Baghdasaryan , Vlastimil Babka , damon@lists.linux.dev, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [RFC PATCH v3 37/37] Docs/mm/damon/design: document write access sample filter type Date: Sun, 7 Dec 2025 22:29:41 -0800 Message-ID: <20251208062943.68824-38-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20251208062943.68824-1-sj@kernel.org> References: <20251208062943.68824-1-sj@kernel.org> Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Update DAMON design document for the write access sample results filtering. Signed-off-by: SeongJae Park --- Documentation/mm/damon/design.rst | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/Documentation/mm/damon/design.rst b/Documentation/mm/damon/design.rst index 4c6d83263a7b..b194bf4a6519 100644 --- a/Documentation/mm/damon/design.rst +++ b/Documentation/mm/damon/design.rst @@ -148,7 +148,7 @@ the page protection in a way similar to that of NUMA balancing hinting faults. Then the page fault handler reports the faults happend by the installed page protection to DAMON core layer. Compared to the accessed-bit based one, this approach gives more information to DAMON, such as the access-generated -CPU/threads. +CPU/threads and whether it was for writing or reading. ``paddr`` uses :ref:`accessed-bit based check ` by default, and users can change @@ -317,6 +317,8 @@ Below ``type`` of access sampling results filter are currently supported. - threads - Whether the sampled access was generated by a thread that having a thread (task) id that exist in a given array of ids. +- write + - Whether the sampled access was for writing. .. _damon_design_age_tracking: -- 2.47.3