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 F1A6F378833; Fri, 15 May 2026 00:44:58 +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=1778805899; cv=none; b=G71W+N5q2b8oPm8CJkzFSPo1TpnUBaH7bhoJ0oJj/+spPnnKXh8r68qAOMAWHLWL8DEAYqv0Na53VnIfKe5eAsJ1GryUrgjCaMgwLixyocl1xoTca1Au7XOaSwsg6MkFKMEFPypaEsqFj/NWLK08Q6xAckHuWNpt4I/nPACOx04= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778805899; c=relaxed/simple; bh=PDuM782dGG2LDPjQZNWcCEwrn5/ZbTB5xohK557WpVY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=XFO7qrzgZ+9JCuX9fyRxjREu1Kfdj3UGKMmcK7JDPyWxshsvELX+enrfG7nzh1WhVeBrhTCUXnoF6v+DpMjMhZW2p3YIizOwQgwY8phWlAINmQfgKqjQie0JSm6s2skF8LF5+yf1ayBStU6c+XEgvdf11NabLdDBzsNROeWYr/E= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=NMLWx31t; 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="NMLWx31t" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E68EEC2BCB3; Fri, 15 May 2026 00:44:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1778805898; bh=PDuM782dGG2LDPjQZNWcCEwrn5/ZbTB5xohK557WpVY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=NMLWx31teEvDCLkfORSTTqndUMh731Ek0cmeMEqgxqbJQ4Wv7Re8HHusjZCQ+T8xk TCu22IR+UZt6zWmgSklrknPlbO/qXzK30V1FRRv/zvVWPcFf4aVUqIFroeINyZ1gPo SHuFcfjhB0h5jy2YAEn3Bz2oSInkYU7DNgZQnOv+v+DuY4xvJENy1jlheJ10H5nj33 v+Tp3Pp0SbciKMr8iTelWTvPf55i5i/wEaJV9D3M/5Z3n+a8kjd7wPcWYpAiPkurio zYzf277H1k9CSFJa/txKFLdNiNYtbTsz7nNebu/EPQys3sMG/GWvKu4lxGAX8A5mWg 7PbEIMGkndThw== 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 v2.2 26/28] mm/damon/sysfs: setup damon_filter->memcg_id from path Date: Thu, 14 May 2026 17:44:27 -0700 Message-ID: <20260515004433.128933-27-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260515004433.128933-1-sj@kernel.org> References: <20260515004433.128933-1-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 c3ecb35da6404..5ad46bed18119 100644 --- a/include/linux/damon.h +++ b/include/linux/damon.h @@ -974,6 +974,7 @@ 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 2d4a63dcc47fe..a6f613c9e5c91 100644 --- a/mm/damon/core.c +++ b/mm/damon/core.c @@ -139,7 +139,7 @@ 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 21f89f2976ca5..d0810540f8257 100644 --- a/mm/damon/sysfs.c +++ b/mm/damon/sysfs.c @@ -1897,6 +1897,17 @@ 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