[RFC PATCH 13/13] mm/damon: remove damon_region->nr_accesses_bp

From: SeongJae Park

Date: Fri Jun 19 2026 - 15:39:53 EST


No code touches damon_region->nr_accesses_bp field. Remove it.

Signed-off-by: SeongJae Park <sj@xxxxxxxxxx>
---
include/linux/damon.h | 10 ----------
1 file changed, 10 deletions(-)

diff --git a/include/linux/damon.h b/include/linux/damon.h
index 16e3e0910526b..cfd653c3e88cd 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;

--
2.47.3