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 ECFA83CB91E; Tue, 12 May 2026 14:37:07 +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=1778596628; cv=none; b=c/psAkDwVLQ23JW6hl6QMHB6QiZgZ+DzF4gPTz20+IHWI1mzAAau/eMJ27jT+vb5V6HeI1tbjJ87h7Kg5Vt7Vsey2228TDk0gJj0RMUgtUwL0nSPCGgeOr94+z9nuzLAqXJ+qaZ7EA7FehSZp+S6XA2V/4/lVvH5jwz/e7SMESk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778596628; c=relaxed/simple; bh=cFvp8t6ODEV3JdI3/2xCA29FAtQcg5JdAkWzfAP5fUM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Mae+yQuryf3d8HKn2SXR6QH/1E6AD1IMIjslvbcAmYy+clAt+2a9ibj/dsqR2UqsnpJEsaP8GVyFBX2XWa1V57eAXFatdld500DozQM8dd1mteWBwuUXD6bPAUPn/nkhCw6fWcEBjn4zFi4DzNZcRkeqLBshEHpkNbHTfertpcM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=qXMh6v4S; 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="qXMh6v4S" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 99DA9C2BCF5; Tue, 12 May 2026 14:37:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1778596627; bh=cFvp8t6ODEV3JdI3/2xCA29FAtQcg5JdAkWzfAP5fUM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=qXMh6v4S8blyPmQhNSi/jVQnYSmsr/nWTHGVyngriybW3PN7mRYtehiv6Fg/rGNKj HsMtgcAqJu1TmNgoFc4cQNvVZP/PNKBkQzgZvWtHbbjtc2aH25/NmIhYeUguOCeuUM V41/BnERJWQTmiIGjkD9rmkVpEPbgdCtW3kOQtUFMhfpvbS/cy5IH7X6dPM7vtOum1 xN5glbUR+s4DTK7GQR692b6wCz6zklxGq2sNmwb4li1OcsP1pryObrhOoLVeYX8SZr SvJyijxVUDo/J3MXa0gY6W8zvwOULqFnB/bba7+cDrZ1ewoxg2lzOpqhgClZO/OuZN 7gahZmp1+tAcA== 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 26/28] mm/damon/sysfs: setup damon_filter->memcg_id from path Date: Tue, 12 May 2026 07:36:41 -0700 Message-ID: <20260512143645.113201-27-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260512143645.113201-1-sj@kernel.org> References: <20260512143645.113201-1-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 ef751898a3c06..89568f463e556 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