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mm/damon/core: remove damon_region->nr_accesses_bp

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

Link: https://lore.kernel.org/20260630040812.149729-19-sj@kernel.org
Signed-off-by: SJ Park <sj@kernel.org>
Cc: Brendan Higgins <brendan.higgins@linux.dev>
Cc: "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
SJ Park 2026-06-29 21:08:11 -07:00 committed by Andrew Morton
parent 9255add1fc
commit a5edf881c9
2 changed files with 1 additions and 12 deletions
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10
include/linux/damon.h
View File

@ -45,8 +45,6 @@ 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.
@ -59,13 +57,6 @@ 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
@ -75,7 +66,6 @@ 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;

3
mm/damon/core.c
View File

@ -3649,8 +3649,7 @@ 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