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b=EoWhKPDObMVUxx7K89FLrUtlZYwPL/utX18TjsuF0ZzniJ5Ct4iTEFlGy5pr5MPnl y6aTbVwIJtyzjFDlYCaBqqs6Em5VnLIcl4gcyz1Ss1YA5zTDA0pDkVKIf041eUaJJ3 7YFJNM0r7Uww7y9mnPnMLpPXYv16Si+t2mMnnDC5shMEMJaCwDplAdTT1zpYJekmX6 m8vmTeUyE2YSeqivZbkIMV3XNneYX61zlYJ+bz42qjt8RXNhUyNK1Yl1sWTq0WHk1P cuLKMT5NHP7WQP0OfdqCmwCfk3xj9d/QBxyqN2FDggFAf6WgSFcACl9yjDGgTrp9WY ghvM94y6jC56Q== 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 v1.1 13/13] mm/damon: remove damon_region->nr_accesses_bp Date: Sat, 20 Jun 2026 10:22:43 -0700 Message-ID: <20260620172244.90953-14-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260620172244.90953-1-sj@kernel.org> References: <20260620172244.90953-1-sj@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Server: rspam10 X-Rspamd-Queue-Id: 368FD1C000A X-Stat-Signature: 1cferpnf8mc468as8w699yaog4fwu8tp X-HE-Tag: 1781976192-137530 X-HE-Meta: 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 e1UZ294b bqVQVAkgKeYSugtjbWznh/TDW44zYGG/JfkqRUc1rNvQvUuyPMRxryLXonsW9xBwnrNFrwrA7d77IeZ+R35TEJ9jFoElL1bVtsWOXXWnbK2r4oirTTrX5vudmbpcJ7ZC8ucw4lDfu8ZpblLmj0z+OXZf0NoozNFUfbq0kO+QGnHSuehsIy0pEo+2rmXV29vCo1ro0z2PHjIr4DVEtlT5Mn/6lZ21v21ZLrwxHier/pc8uTjpGj/8YDqRbm7/98H9Cj1Oic1D40wAGoG9Vbr3eBcetxw== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: No code touches damon_region->nr_accesses_bp field. Remove it. Signed-off-by: SeongJae Park --- include/linux/damon.h | 10 ---------- mm/damon/core.c | 3 +-- 2 files changed, 1 insertion(+), 12 deletions(-) diff --git a/include/linux/damon.h b/include/linux/damon.h index 55a743d99b567..90d2910b3217a 100644 --- a/include/linux/damon.h +++ b/include/linux/damon.h @@ -47,8 +47,6 @@ struct damon_size_range { * @ar: The address range of the region. * @sampling_addr: Address of the sample for the next access check. * @nr_accesses: Access frequency of this region. - * @nr_accesses_bp: @nr_accesses in basis point (0.01%) that updated for - * each sampling interval. * @probe_hits: Number of probe-positive region samples. * @list: List head for siblings. * @age: Age of this region. @@ -61,13 +59,6 @@ struct damon_size_range { * not be done with direct access but with the helper function, * damon_update_region_access_rate(). * - * @nr_accesses_bp is another representation of @nr_accesses in basis point - * (1 in 10,000) that updated for every &damon_attrs->sample_interval in a - * manner similar to moving sum. By the algorithm, this value becomes - * @nr_accesses * 10000 for every &struct damon_attrs->aggr_interval. This can - * be used when the aggregation interval is too huge and therefore cannot wait - * for it before getting the access monitoring results. - * * @age is initially zero, increased for each aggregation interval, and reset * to zero again if the access frequency is significantly changed. If two * regions are merged into a new region, both @nr_accesses and @age of the new @@ -77,7 +68,6 @@ struct damon_region { struct damon_addr_range ar; unsigned long sampling_addr; unsigned int nr_accesses; - unsigned int nr_accesses_bp; unsigned char probe_hits[DAMON_MAX_PROBES]; struct list_head list; diff --git a/mm/damon/core.c b/mm/damon/core.c index f96f54a7f178a..abccac9e9f9e8 100644 --- a/mm/damon/core.c +++ b/mm/damon/core.c @@ -3580,8 +3580,7 @@ static int kdamond_fn(void *data) * aggregation, and make aggregation * information reset for all regions. Then, * following kdamond_reset_aggregated() call - * will make the region information invalid, - * particularly for ->nr_accesses_bp. + * will make the region information invalid. * * Reset ->next_aggregation_sis to avoid that. * It will anyway correctly updated after this -- 2.47.3