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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> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Stat-Signature: rpejozunhgprqy8yi4nh5bbmmo5saidg X-Rspamd-Queue-Id: 397D31C0014 X-Rspam-User: X-Rspamd-Server: rspam08 X-HE-Tag: 1778767768-792443 X-HE-Meta: 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 qzvPCVVZ HDsiHipO88rH9QTgJzrCQwAM2CeWBVD2biOQvoY/36JG0DJMLnSSW+sXaifoogMDFex0/Dreb1ocop4gXxEAl5fGz5VyVdTZsQEXiVyDLU1lai3g7pWeMhgmiwAN/lBv1mUQsVGj6rkorSoxKJDX1TlaF6YvQ0X6Kz1KXZBBZjnMgk5s4SgH17hOt5TQCx/+Zfy7ELPqhxTKiMWFh0BEn9zj/fUtYE8T6w8QzQf6wOUbuu71FvGCMpiXm+tmuDAgMuCJcpGLH0FCSHbIj17gaYHAYdA== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: 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