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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> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Server: rspam10 X-Rspamd-Queue-Id: 23E1740009 X-Stat-Signature: o8pgb3uiguam8pcqxnhg31e6pao98oji X-HE-Tag: 1778596627-83662 X-HE-Meta: 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 p0pNhYXx TFwBb5vbDrWV8tG1q5+jofVcFP2ExqjVJvJ5O86uALykmCAAFkbe9ZhGyHx51aYO0vIS32cS+vgUTaDtgLA3cjZtBEhbU59J56sodYbhm6oBFoK56ljGaRBemOdpdjayrIzYCT/Z7eVG91zYhprEoyyW+1lZTDk0OUDZmq9knXBFwVb6pCn9H92BATny0IFVBh+ERMOxIu7+w9tbUCw/hyl7WGdxCE4SO2k5uTA6sl+sWo7xiIcibLEMlMSdWnzSOyqXBtpiID3vKLVlFP6mli9stMUERJ2I2+Gd1WrrwGwsTdex2smwNWu11rQ== 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 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