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b=o3DBAiVJ3MOyg5p0ljt6P9bUyfyf8BBFbPeh3n5Hz8RWm6bVS8C8H4CN3aImIdGLu Ng9P99XpRtd/lXcJ/cnoA4kAL3KfJ4jiNmTsJ5rY56oaBM7uhuVE5W1Ied2qEvE3bk vJL5cazGQqPsXauaqrlwIfjModk646fKHHu5XMhXKOVdmon7XbfOmWuFnbZpN2pdKD qYfFl+G0V0MMAGymoj9JnCGhK0MkS6J8WhNx1iR7A+32rw0oY4vs8lovEw2B6CIH3D RDEodlKbeKiWmqqnRktIL7jb4GmQ6e1V8KacGiAzUNzBAQfmn+pNT38cV8w/4JrEHm tNyY90IBq7zbA== 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 v3 26/28] mm/damon/sysfs: setup damon_filter->memcg_id from path Date: Sat, 16 May 2026 11:37:07 -0700 Message-ID: <20260516183712.81393-27-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260516183712.81393-1-sj@kernel.org> References: <20260516183712.81393-1-sj@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Stat-Signature: w6qaipc55ka8nnhyype55e6nbiobjjai X-Rspam-User: X-Rspamd-Queue-Id: 9F3142000A X-Rspamd-Server: rspam07 X-HE-Tag: 1778956655-354372 X-HE-Meta: U2FsdGVkX196v6kThdUUQkgJTsnariqiAaKEJGckYwTdvLrMZwYYXG6T7CK5yTGFl+GTg5Uqa/RJadn+/x9vH4EnxPyA7aGJQLjfRm+ISYugiwhH2xcmFwZGXH/dutDFkBtz/rYX89Va0Nki25DUfuIehWBUFmyZZNBvLR2dxlQOsqxD+EKd2NWWWUZMk85xTAdXW2hVWf+nUT2smdWye5v0Flc7ErUUb/I9rv/i6AkACqmWOUSScCg8AFVEsqxJTIxlV/HA+NAb8r9fANVUnBQzMvI/YqRDPX7bo5fvjE3HkNISgdpPOf9Saq49+12vsnFDwDySKMsqFbuqEjNmBWU7llAKzPuXWnIXpjfRVHQs7hZ+L8E+KsWc2Es4CCuQ1yJGYrNWUKw6kDN7YVoj0Rgx1xTHf9LoKwmDMnRdncOl0LAFM1VeIusaz8SAWF5Mk/YsiysB+kWE0ilx4Vfrw0E2vueAg/MevqTOJCv6RFqeah5hLcc5wWi+2S9Pm5MsEoj2kDciDca8KR2oVpx7uo3acRhne/Xx90VhQSqaEPduwc5eVmju/ZkpKx3HxQRybT/Whgo1wIYaV5aYTIuHAI26X6O7wUzr5t1uNWMY4Y96KYXXOhl3BxXi4bwkDEnrq9AHbWFdho2MIhfzGa2HuzbmGfC70ycl70J9ChuR881BQ+/RXvjYc0YPFJy4wRgU1Ncgoknz5wGasy3+xSZiOZwU2iztDPfln+21JbQQuPR4R0TVE49fQZg96TaXq599pDwcrJ7PpMqT4eACbYwmm4Jz8K51NWiRRbmN1Q+cxczMyqCPVJa3p+6DaRaJGBVu0omlaGscGZTWjBXj8eyUGaHmAhooO+uw0LRFwZWREJAan2JeGKo+slBaHliSmcWrvRmBYTaZQuYXW4+jvsRakK41/XFtZAEOAGlXLehXf1QUc0k/rL7egBWpgmXJh4ux7/pC+yilOXzJTxTBwGZ l/O6pHfR OCFx70T2MjaCgDs5InsuPmSbbK5SH+gjGel5TMZcDmhuepBKmky0vVEakz+Hg7AAARdkT6ojkWrKRtFEnqwM9cc1pagew77UO05L6z5kEvIxDNuAQapmpRL0ZIAD21WvjUF01JxPFShqOUHZ7VhnH4hQiqugFGUMcidZu6smpiMzzButm0Gy0FTaOkdF6rXH1I0JeT2rpMnZzgPnL06DR/TOHZ9shkGpH/cTAhsMDi1N4P/mTybMwXF1jIg== 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 56a76781fde22..cd0c352a777dc 100644 --- a/include/linux/damon.h +++ b/include/linux/damon.h @@ -976,6 +976,7 @@ 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 332d13d9f8603..b8fe4320c3da8 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 2df1d670ee77d..8f927e3dba827 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