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 C5AD7369972; Sat, 16 May 2026 18:37:34 +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=1778956654; cv=none; b=rzufy7DwvBNySZW2ZBN0T1MZXLgXqoFdFvTV60MVaO/33haii1FBALQiij7ROpeUbPwwU1t4uRpGMmGtj9YgpaA09grcqmwLucYbCh/8corOCJt3agzIO0kcyRJWx4AH23q/m4wgSPzFy3EZzuwTkYAA20u0PEEj+St8DT7Aj5c= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778956654; c=relaxed/simple; bh=Ee2xBoGCN0q1MWtaUMmJevs875atGOk3HcGVOqqc1ug=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=u/jiQsixCEYCKHMbdgO561717MkR16+bPaJ5eXUS4NejBVSJS0RVSzobTbZhibjIus1cTWb0F4v1UWP2P8s/8yBEamLJwpQatHMs/QPNUOgWzjWl/mDg6og7cCLm5ZUglOpDF270lfC8OMahGKhPsceLqOdQtOeyY30RVqM0jss= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=o3DBAiVJ; 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="o3DBAiVJ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7AE5CC2BCC7; Sat, 16 May 2026 18:37:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1778956654; bh=Ee2xBoGCN0q1MWtaUMmJevs875atGOk3HcGVOqqc1ug=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=o3DBAiVJ3MOyg5p0ljt6P9bUyfyf8BBFbPeh3n5Hz8RWm6bVS8C8H4CN3aImIdGLu Ng9P99XpRtd/lXcJ/cnoA4kAL3KfJ4jiNmTsJ5rY56oaBM7uhuVE5W1Ied2qEvE3bk vJL5cazGQqPsXauaqrlwIfjModk646fKHHu5XMhXKOVdmon7XbfOmWuFnbZpN2pdKD qYfFl+G0V0MMAGymoj9JnCGhK0MkS6J8WhNx1iR7A+32rw0oY4vs8lovEw2B6CIH3D RDEodlKbeKiWmqqnRktIL7jb4GmQ6e1V8KacGiAzUNzBAQfmn+pNT38cV8w/4JrEHm tNyY90IBq7zbA== 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 v3 26/28] mm/damon/sysfs: setup damon_filter->memcg_id from path Date: Sat, 16 May 2026 11:37:07 -0700 Message-ID: <20260516183712.81393-27-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260516183712.81393-1-sj@kernel.org> References: <20260516183712.81393-1-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 56a76781fde22..cd0c352a777dc 100644 --- a/include/linux/damon.h +++ b/include/linux/damon.h @@ -976,6 +976,7 @@ 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 332d13d9f8603..b8fe4320c3da8 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 2df1d670ee77d..8f927e3dba827 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