[RFC PATCH v1.2 17/17] mm/damon: remove damon_region->nr_accesses_bp

[SeongJae Park <sj@kernel.org>]

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

Signed-off-by: SeongJae Park <sj@kernel.org>
---
 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 a09ee8a09b5af..fc3d467dc2e34 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 6542ebf13d4d8..8d3b720f774f6 100644
--- a/mm/damon/core.c
+++ b/mm/damon/core.c
@@ -3584,8 +3584,7 @@ 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