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b=NMLWx31teEvDCLkfORSTTqndUMh731Ek0cmeMEqgxqbJQ4Wv7Re8HHusjZCQ+T8xk TCu22IR+UZt6zWmgSklrknPlbO/qXzK30V1FRRv/zvVWPcFf4aVUqIFroeINyZ1gPo SHuFcfjhB0h5jy2YAEn3Bz2oSInkYU7DNgZQnOv+v+DuY4xvJENy1jlheJ10H5nj33 v+Tp3Pp0SbciKMr8iTelWTvPf55i5i/wEaJV9D3M/5Z3n+a8kjd7wPcWYpAiPkurio zYzf277H1k9CSFJa/txKFLdNiNYtbTsz7nNebu/EPQys3sMG/GWvKu4lxGAX8A5mWg 7PbEIMGkndThw== 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 v2.2 26/28] mm/damon/sysfs: setup damon_filter->memcg_id from path Date: Thu, 14 May 2026 17:44:27 -0700 Message-ID: <20260515004433.128933-27-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260515004433.128933-1-sj@kernel.org> References: <20260515004433.128933-1-sj@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Stat-Signature: te3frcbp7it339yg84rxgbmssiu6c9ng X-Rspamd-Server: rspam01 X-Rspamd-Queue-Id: 80DA2180007 X-Rspam-User: X-HE-Tag: 1778805898-140166 X-HE-Meta: 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 iYXgZ1av 1u7c5/BFbEVFYS78DkIYfqrHlKXQvlPW8fx9YN+m3AUF/B3Pmi8g40bWKSsIOV5lPYOkAL2N4DTTUZehp+210ZIPYCNDZvzyVy/QhUCO9BC2IDx2k//KCfAdIxtgohdrZLPfvhAzMBUEbtQLXZ8wL9N+dktHWoEaKsu7TyKj7Fca+JEMevtKAUtaAkpNTAa9E4IJNM2PAwhD/Db0zxyn2C7ofvt6Je64XrFl3qgpe/+oLCietdu6EQTFUKHZySxXQqxn0WHs9AhGwhpeLQvXr4uyQ7g== 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 c3ecb35da6404..5ad46bed18119 100644 --- a/include/linux/damon.h +++ b/include/linux/damon.h @@ -974,6 +974,7 @@ 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 2d4a63dcc47fe..a6f613c9e5c91 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 21f89f2976ca5..d0810540f8257 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