From nobody Fri Dec 19 13:31:38 2025 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 A4610321F2A; Mon, 8 Dec 2025 06:30:37 +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=1765175437; cv=none; b=Z0dlq5M5OGqPrL57TYmvqd6kXFyTzOr7X63EbCuzuO3w1j0slGn/ZPqO9f9+Wt5i5ov3KXZ+ll3e+7esOfrWeGxSrDam0Pz9z/5jmqTZc+YNCJD9xwc8aUwXONtPMLdCU8Vu+84pvzuEVaCxmPgpCWOS2pwS+cJJzNNEvg3RNb8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765175437; c=relaxed/simple; bh=WF46eHAg8BpA3rOP5vwAEQ9EqpTxFbiwB2Pt34pRHm0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=FyL5bb+FrgR9ZT+bw6viMPaKP6gZWbzuBmkhCZ2qTbpF7CN7huctAtPAYcJdWhg57g6p28WBA/bcaoYBuJbKCxI5HW5iy5+0OD8GQjnU/lZ9lmwxr0O9/aZnXvg+x9xmfKftSaYn7f0g0lkMxwe5FsumAI9GVQSbrhA0g/nKdvk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Jsk9EEcx; 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="Jsk9EEcx" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0D995C116B1; Mon, 8 Dec 2025 06:30:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1765175437; bh=WF46eHAg8BpA3rOP5vwAEQ9EqpTxFbiwB2Pt34pRHm0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Jsk9EEcx6sGR5L8QC3E5ZPFlTYVH7w3ajlnyRF2mk3nO70OXa5HGMeDiJOa8U7WKl pDeyuojSH9d/a7o02+VSAA1ssDTcxb5vDP/G+0kGZ4Imtc4uXqcHGkA2LCUn1RLXXK O+EQeptMA4tPgTn0TUp4I/IhVqa+WuFSiaDwYYMEqHVD/qiVSkmqteUAmsea+vTfPF XGVJYD79SAGRPkRl577nudDk15TT+WdhgNll1DtOmNCEjPbi6vgFE4uK1nxbYt8lPT UCrkhMX4EvzImtlCI202A8nCfdZnIJwUVfC6NGBwSEni/eBy1S52FZiOOkypPUEmxp QpbiymgYVVWVw== 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 31/37] Docs/mm/damon/design: document threads type sample filter Date: Sun, 7 Dec 2025 22:29:35 -0800 Message-ID: <20251208062943.68824-32-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-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Update DAMON design document for threads type access sample results filtering. Signed-off-by: SeongJae Park --- Documentation/mm/damon/design.rst | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/Documentation/mm/damon/design.rst b/Documentation/mm/damon/des= ign.rst index 9a4679de437f..4c6d83263a7b 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 ba= lancing hinting faults. Then the page fault handler reports the faults happend by the installed pa= ge protection to DAMON core layer. Compared to the accessed-bit based one, t= his approach gives more information to DAMON, such as the access-generated -CPU. +CPU/threads. =20 ``paddr`` uses :ref:`accessed-bit based check ` by default, and users can ch= ange @@ -314,6 +314,9 @@ Below ``type`` of access sampling results filter are cu= rrently supported. - cpumask - Whether the sampled access was generated by a cpu that included in a given cpumask. +- threads + - Whether the sampled access was generated by a thread that having a t= hread + (task) id that exist in a given array of ids. =20 =20 .. _damon_design_age_tracking: --=20 2.47.3