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 462EE41325D; Thu, 14 May 2026 14:09:28 +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=1778767768; cv=none; b=t+TbQxfLFC+iM3GGVnfdyE933DhPNFLrP3MVKykTorXn7JR61wYz8gPEkESXWD1bvKsKOKxq2tSEDlqfrE3wgfSZ+rTXs2qCRS15ELbNfNhSB4JbizEtBiOyXAbaLSM99Jm1PL1RpJcEqFxVgFHBSYfchPF1tPVbfKW0ermKrkA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778767768; c=relaxed/simple; bh=NHAL5y/oPITnJCCLIJLmLCX0+940gzkr79MzQKjKl28=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=DcgzpjtLKmDEMPwSlmFRqNMfjQCOroRVuAJMe8o/JbdXYGRtPo5NwxxOdSxfUEeJSIUlERdyk7OUtpOfJQ+/ALJ6r4hoCsJqA5aX89sprgXf5rJlVdJotYrIqEQf9137/p28f65HOd9lDXyINH4rq+KfTOebCil3+pIIBNqwkbM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=u7v85GB5; 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="u7v85GB5" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A624EC2BCB3; Thu, 14 May 2026 14:09:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1778767767; bh=NHAL5y/oPITnJCCLIJLmLCX0+940gzkr79MzQKjKl28=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=u7v85GB5adthVl0Gzie0AX6da+Fxt8P/DCoN9neudTZb+yxQ/k+RMBSxkQlNUv3w1 gxB0tSOZPXZStHkyYJWswniAz1Os2fR7d3ULJmPBNNHJa4vaAqtaX/pgAxnkDLExQm 0Ur3FtzZVU6A859QoDLWVJiIXGIM+p/zXjPT22zXvWizh2OhFWPIyQT2K5y3DwWnhu ShlqvtgbxSEDmZc0Pr6wCo1Z9sc/8YRK03ieQA5lvnosV3EDw5VwY+R8wptDPXyTfH 4xePfda9d3AiV2TJPPOB7qihIJq+BOrpG2xqs3b9+Qgc/N0gjMqPN5Kj9ssakivPn5 5W1kH5HXPvOOw== From: SeongJae Park To: Cc: SeongJae Park , Andrew Morton , damon@lists.linux.dev, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [RFC PATCH v2.1 26/28] mm/damon/sysfs: setup damon_filter->memcg_id from path Date: Thu, 14 May 2026 07:08:59 -0700 Message-ID: <20260514140904.119781-27-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260514140904.119781-1-sj@kernel.org> References: <20260514140904.119781-1-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 Find and set the memcg_id for damon_filter from the user-passed memory cgroup path when updating the DAMON input parameters. Signed-off-by: SeongJae Park --- include/linux/damon.h | 1 + mm/damon/core.c | 2 +- mm/damon/sysfs.c | 11 +++++++++++ 3 files changed, 13 insertions(+), 1 deletion(-) diff --git a/include/linux/damon.h b/include/linux/damon.h index 3dec0947b93f0..6935cc3ea00ab 100644 --- a/include/linux/damon.h +++ b/include/linux/damon.h @@ -1004,6 +1004,7 @@ static inline unsigned long damon_sz_region(struct damon_region *r) struct damon_filter *damon_new_filter(enum damon_filter_type type, bool matching, bool allow); void damon_add_filter(struct damon_probe *probe, struct damon_filter *f); +void damon_destroy_filter(struct damon_filter *f); struct damon_probe *damon_new_probe(void); void damon_add_probe(struct damon_ctx *ctx, struct damon_probe *probe); diff --git a/mm/damon/core.c b/mm/damon/core.c index 32c371c98a884..d74c58874f74c 100644 --- a/mm/damon/core.c +++ b/mm/damon/core.c @@ -143,7 +143,7 @@ static void damon_free_filter(struct damon_filter *f) kfree(f); } -static void damon_destroy_filter(struct damon_filter *f) +void damon_destroy_filter(struct damon_filter *f) { damon_del_filter(f); damon_free_filter(f); diff --git a/mm/damon/sysfs.c b/mm/damon/sysfs.c index 2b68e1a7de451..0b7b0ef345cc8 100644 --- a/mm/damon/sysfs.c +++ b/mm/damon/sysfs.c @@ -1927,6 +1927,17 @@ static int damon_sysfs_set_probes(struct damon_ctx *ctx, sys_filter->allow); if (!filter) return -ENOMEM; + if (filter->type == DAMON_FILTER_TYPE_MEMCG) { + int err; + + err = damon_sysfs_memcg_path_to_id( + sys_filter->path, + &filter->memcg_id); + if (err) { + damon_destroy_filter(filter); + return err; + } + } damon_add_filter(c, filter); } } -- 2.47.3