From nobody Wed Oct 8 10:42:48 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 66626232369; Wed, 2 Jul 2025 05:16:11 +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=1751433371; cv=none; b=i1T0PbbC9rQMf1r1TD05fL7U/jY/DQgI5s5LvictNXoBGQKQ6jBhvq1XJsNFRi/azACN5U7u9H7GoMseQgtOCLqPQ46JDL+OKBl92uAEsYH/wR/jrs88TJQtVu/23Fl4JgxH04F07qO92B+OK0keHFniNXdWSIm7s/NpfwDkjSg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751433371; c=relaxed/simple; bh=eAY5XLYA4mfpfPr9vGq4U3HvZbAGIjijytVFdcL31aI=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=bw6toOiDa8WnEPQOnCwIIJEtnGw94yeqZuqZqsPwSXuGa5aJl9R1IQncrptVZqU90vCMMe0KEHwLBP3TrudnwxFD9vzBwM3txcB2OWQbny+rqkOO/t/k79pDS+FGpnOnFZEIppm3ZTfjZGwajwftSyyE676pDKdNvR5CLirGOEk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=MjUBoxZk; 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="MjUBoxZk" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B860FC4CEEE; Wed, 2 Jul 2025 05:16:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1751433370; bh=eAY5XLYA4mfpfPr9vGq4U3HvZbAGIjijytVFdcL31aI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=MjUBoxZk6Rms4kw/kYxkdd6eKSFU9bLTPMv0wpNzsiwC/Bp14SfV1NKKdPJ8WpLrh 4BioumljZFgdc9qTxz+VREa6wLgZg1hfllVZhSD6s2Dzz0c2F1qS1qmlqffijyHfnZ /ZgaNkP3Xr03ssK20ZdNBo3kkhnyVXRGX+khYYJgCvW9WnHGcHlRJOPvAzvEurJyRN b1bYq7oQqJebeWIjMTyZKWuPvxwBpFGhF5LtbB9JOkNC56fnWVL1486wmfw6R2WWTI Qm1EHmh73ovoF+e5LxiWW2dqmO1zwoWYtScnpscxZi3hcfK3+9fp0MSPcjlCKy8JLo zyXD64JeNAJGg== From: SeongJae Park To: Cc: SeongJae Park , Andrew Morton , Bijan Tabatabai , damon@lists.linux.dev, kernel-team@meta.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [RFC PATCH v2 4/6] mm/damon/sysfs-schemes: set damos->migrate_dest Date: Tue, 1 Jul 2025 22:15:56 -0700 Message-Id: <20250702051558.54138-5-sj@kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250702051558.54138-1-sj@kernel.org> References: <20250702051558.54138-1-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" Pass user-specified multiple DAMOS action destinations and their weights to DAMON core API, so that user requests can really work. Signed-off-by: SeongJae Park --- mm/damon/sysfs-schemes.c | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/mm/damon/sysfs-schemes.c b/mm/damon/sysfs-schemes.c index b9434cdaacdc..507ca7708078 100644 --- a/mm/damon/sysfs-schemes.c +++ b/mm/damon/sysfs-schemes.c @@ -2576,6 +2576,29 @@ void damos_sysfs_update_effective_quotas( } } =20 +static int damos_sysfs_add_migrate_dest(struct damos *scheme, + struct damos_sysfs_dests *sysfs_dests) +{ + struct damos_migrate_dest *dest =3D &scheme->migrate_dest; + int i; + + dest->node_id_arr =3D kmalloc_array(sysfs_dests->nr, + sizeof(*dest->node_id_arr), GFP_KERNEL); + if (!dest->node_id_arr) + return -ENOMEM; + dest->weight_arr =3D kmalloc_array(sysfs_dests->nr, + sizeof(*dest->weight_arr), GFP_KERNEL); + if (!dest->weight_arr) + /* ->node_id_arr will be freed by scheme destruction */ + return -ENOMEM; + for (i =3D 0; i < sysfs_dests->nr; i++) { + dest->node_id_arr[i] =3D sysfs_dests->dests_arr[i]->id; + dest->weight_arr[i] =3D sysfs_dests->dests_arr[i]->weight; + } + dest->nr_dests =3D sysfs_dests->nr; + return 0; +} + static struct damos *damon_sysfs_mk_scheme( struct damon_sysfs_scheme *sysfs_scheme) { @@ -2638,6 +2661,11 @@ static struct damos *damon_sysfs_mk_scheme( damon_destroy_scheme(scheme); return NULL; } + err =3D damos_sysfs_add_migrate_dest(scheme, sysfs_scheme->dests); + if (err) { + damon_destroy_scheme(scheme); + return NULL; + } return scheme; } =20 --=20 2.39.5