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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> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: C3911160009 X-Stat-Signature: 3ghdmb5gn17zzyutt44duno79xy8dz8g X-Rspam-User: X-HE-Tag: 1779147693-686557 X-HE-Meta: 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 YeIhxt8R Fi753Dx6vVqE0n1VdwR2XgZO0LPNVIpYsxBp10Qbq31Mw8cEAWrLMl/u+w2ox8Y2VltJOEW9tlGpQX4zhBuQT79KFebZeozpYQeshaa8MWgDHGRUh6vXnDQr0adBfyUduvb0qgsHacO5n0QisJokRwZtIcmaItQSkrRhkGQaT9gtw+fRxz8GYf8MUuFmB3VLmOdaK/XeYX19v8iDOk9S6x2CrjJbv5wno7aOo1MjE2vkLFiXf72uy2Wtd5uPmSzkNS5xTkCkBmwVyCh+QYzWwjASY6wdrmTOUG/GU3pavEok0sjN1gDHTruTrwG4wvPsnt5CE 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 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