From: SeongJae Park <sj@kernel.org>
Cc: SeongJae Park <sj@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
damon@lists.linux.dev, linux-kernel@vger.kernel.org,
linux-mm@kvack.org
Subject: [RFC PATCH 08/13] mm/damon/core: remove damon_verify_merge_regions_of()
Date: Fri, 19 Jun 2026 12:33:53 -0700 [thread overview]
Message-ID: <20260619193415.73833-9-sj@kernel.org> (raw)
In-Reply-To: <20260619193415.73833-1-sj@kernel.org>
damon_verify_merge_regions_of() is only for nr_accesses_bp validation.
But nr_accesses_bp is no more being used for a real purpose. Remove the
validation.
Signed-off-by: SeongJae Park <sj@kernel.org>
---
mm/damon/core.c | 15 ---------------
1 file changed, 15 deletions(-)
diff --git a/mm/damon/core.c b/mm/damon/core.c
index 9b8423056d879..f2db39aa34f4c 100644
--- a/mm/damon/core.c
+++ b/mm/damon/core.c
@@ -3107,20 +3107,6 @@ static void damon_merge_two_regions(struct damon_target *t,
damon_destroy_region(r, t);
}
-#ifdef CONFIG_DAMON_DEBUG_SANITY
-static void damon_verify_merge_regions_of(struct damon_region *r)
-{
- WARN_ONCE(r->nr_accesses != r->nr_accesses_bp / 10000,
- "nr_accesses (%u) != nr_accesses_bp (%u)\n",
- r->nr_accesses, r->nr_accesses_bp);
-}
-#else
-static void damon_verify_merge_regions_of(struct damon_region *r)
-{
-}
-#endif
-
-
/*
* Merge adjacent regions having similar access frequencies
*
@@ -3134,7 +3120,6 @@ static void damon_merge_regions_of(struct damon_target *t, unsigned int thres,
struct damon_region *r, *prev = NULL, *next;
damon_for_each_region_safe(r, next, t) {
- damon_verify_merge_regions_of(r);
if (abs(r->nr_accesses - r->last_nr_accesses) > thres)
r->age = 0;
else if ((r->nr_accesses == 0) != (r->last_nr_accesses == 0))
--
2.47.3
next prev parent reply other threads:[~2026-06-19 19:34 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-19 19:33 [RFC PATCH 00/13] mm/damon: optimize out nr_accesses_bp SeongJae Park
2026-06-19 19:33 ` [RFC PATCH 01/13] mm/damon: introduce damon_nr_accesses_mvsum() SeongJae Park
2026-06-19 19:33 ` [RFC PATCH 02/13] mm/damon/tests/core-kunit: test damon_mvsum() SeongJae Park
2026-06-19 19:33 ` [RFC PATCH 03/13] mm/damon/core: use damon_nr_accesses_mvsum() in __damos_valid_target() SeongJae Park
2026-06-19 19:33 ` [RFC PATCH 04/13] mm/damon/core: use damon_nr_accesses_mvsum() for damos region tracing SeongJae Park
2026-06-19 19:33 ` [RFC PATCH 05/13] mm/damon/sysfs-schemes: use damon_nr_accesses_mvsum() for damo regions SeongJae Park
2026-06-19 19:33 ` [RFC PATCH 06/13] mm/damon/core: remove damon_warn_fix_nr_accesses_corruption() SeongJae Park
2026-06-19 19:33 ` [RFC PATCH 07/13] mm/damon/core: remove damon_verify_reset_aggregated() SeongJae Park
2026-06-19 19:33 ` SeongJae Park [this message]
2026-06-19 19:33 ` [RFC PATCH 09/13] mm/damon/tests/core-kunit: remove nr_accesses_bp setup and tests SeongJae Park
2026-06-19 19:33 ` [RFC PATCH 10/13] selftests/damon/drgn_dump_damon_status: do not dump nr_accesses_bp SeongJae Park
2026-06-19 19:33 ` [RFC PATCH 11/13] mm/damon/core: remove nr_accesses_bp setups and updates SeongJae Park
2026-06-19 19:33 ` [RFC PATCH 12/13] mm/damon/core: remove damon_moving_sum() and its unit test SeongJae Park
2026-06-19 19:33 ` [RFC PATCH 13/13] mm/damon: remove damon_region->nr_accesses_bp SeongJae Park
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