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 8C5073AD50D; Mon, 18 May 2026 23:41:33 +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=1779147693; cv=none; b=uV/rm0lUsaBC5Xh7dqlxb7Xv165WQbi/gMCvNWEaxPS+GTDAmz4zTA2Xaa2nUbZEVRTbgJzKRbNVWo/dvVzXOWnLhRVVd0qpBI+NgVjMevnyXqFVVoj89eNFsr4wSfkSaBcOhGLv5FKKwUmYmxVAGTyIJABj7I+YBqufJQoZt+U= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779147693; c=relaxed/simple; bh=6WMqOvniCqDfChPfJlN5gPjmRV0oSVQC/3h1Awn27/8=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=KwM1d18ejvRaEgi9/Nxc3s/hm/DRfRz2MQGlfHkYbWSfRn5kiOL5BZsFqMaTBHy7y3C+HH1zu1jrUc1cRP1L8qRu4esDO9ZSVI5fpkxKUAk4rbq0KZCJde+hLuIGeoFFrXG+rkrjYXoovbVZhyebAkP5wIC5Eo4lioc8tiQLZNA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=nx7Y6cJy; 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="nx7Y6cJy" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 47486C2BCC7; Mon, 18 May 2026 23:41:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1779147693; bh=6WMqOvniCqDfChPfJlN5gPjmRV0oSVQC/3h1Awn27/8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=nx7Y6cJyf/Z+FfDkjViLsnVZQjjR/x4a6hle29GtyefXQ8KOem/yZu9D84oeZkCow brJZMwLSkRV1s8PEP7ICJK8cV9yF++/3ijIGWnetTeohbFfslS94JTfBuFhXwrVxT/ Frb08HxyZLHkS6S3ta+POYFOs25hy0wZu0f5XGnF4zHqeOSI3E1UrNt9R1S1XLo5t+ i1wwT+vcb22AacRZzfhL51l1M/DMvkkOV6n0HZ52/UZn7K8U3rPpL5tyuxPI2Odffq 0h3YXuE7nU7USn9cHzsNr3Fhj1SyHj22LCAjZafvWPufwfP9V2+FHWXj54xXvBS7yl VR8Gq+H7tF8gw== From: SeongJae Park To: Andrew Morton Cc: SeongJae Park , damon@lists.linux.dev, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH 26/28] mm/damon/sysfs: setup damon_filter->memcg_id from path Date: Mon, 18 May 2026 16:41:14 -0700 Message-ID: <20260518234119.97569-27-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260518234119.97569-1-sj@kernel.org> References: <20260518234119.97569-1-sj@kernel.org> Precedence: bulk X-Mailing-List: damon@lists.linux.dev 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 6a54c601889bd..4014fd0d463cb 100644 --- a/include/linux/damon.h +++ b/include/linux/damon.h @@ -1006,6 +1006,7 @@ 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 4fc90b0bdac88..68b3b4bbc8fc9 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 0f6379caf4816..2e95e3bac774d 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