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From: SJ Park <sj@kernel.org>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: SJ Park <sj@kernel.org>,
	damon@lists.linux.dev, linux-kernel@vger.kernel.org,
	linux-mm@kvack.org
Subject: [PATCH 10/18] mm/damon/core: remove damon_verify_merge_regions_of()
Date: Mon, 29 Jun 2026 21:08:03 -0700	[thread overview]
Message-ID: <20260630040812.149729-11-sj@kernel.org> (raw)
In-Reply-To: <20260630040812.149729-1-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: SJ 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 bfef6a8556c8d..78c32ee45d28b 100644
--- a/mm/damon/core.c
+++ b/mm/damon/core.c
@@ -3121,20 +3121,6 @@ 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
  *
@@ -3148,7 +3134,6 @@ 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

  parent reply	other threads:[~2026-06-30  4:08 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-06-30  4:07 [PATCH 00/18] mm/damon: optimize out nr_accesses_bp SJ Park
2026-06-30  4:07 ` [PATCH 01/18] mm/damon/core: introduce damon_nr_accesses_mvsum() SJ Park
2026-06-30  4:19   ` sashiko-bot
2026-06-30  4:28     ` SJ Park
2026-06-30  4:07 ` [PATCH 02/18] mm/damon/tests/core-kunit: test damon_mvsum() SJ Park
2026-06-30  4:07 ` [PATCH 03/18] mm/damon/core: always update ->last_nr_accesses for intervals change SJ Park
2026-06-30  4:21   ` sashiko-bot
2026-06-30  4:30     ` SJ Park
2026-06-30  4:07 ` [PATCH 04/18] mm/damon/core: handle unreset nr_accesses in damon_nr_accesses_mvsum() SJ Park
2026-06-30  4:23   ` sashiko-bot
2026-06-30  4:33     ` SJ Park
2026-06-30  4:07 ` [PATCH 05/18] mm/damon/core: use damon_nr_accesses_mvsum() in __damos_valid_target() SJ Park
2026-06-30  4:25   ` sashiko-bot
2026-06-30  4:34     ` SJ Park
2026-06-30  4:07 ` [PATCH 06/18] mm/damon/core: use damon_nr_accesses_mvsum() for damos region tracing SJ Park
2026-06-30  4:08 ` [PATCH 07/18] mm/damon/sysfs-schemes: use damon_nr_accesses_mvsum() for damo regions SJ Park
2026-06-30  4:08 ` [PATCH 08/18] mm/damon/core: remove damon_warn_fix_nr_accesses_corruption() SJ Park
2026-06-30  4:08 ` [PATCH 09/18] mm/damon/core: remove damon_verify_reset_aggregated() SJ Park
2026-06-30  4:08 ` SJ Park [this message]
2026-06-30  4:08 ` [PATCH 11/18] mm/damon/tests/core-kunit: remove nr_accesses_bp setup and tests SJ Park
2026-06-30  4:08 ` [PATCH 12/18] selftests/damon/drgn_dump_damon_status: do not dump nr_accesses_bp SJ Park
2026-06-30  4:08 ` [PATCH 13/18] mm/damon/core: remove nr_accesses_bp setups and updates SJ Park
2026-06-30  4:08 ` [PATCH 14/18] mm/damon/core: remove attrs param from damon_update_region_access_rate() SJ Park
2026-06-30  4:19   ` sashiko-bot
2026-06-30  4:39     ` SJ Park
2026-06-30  4:48   ` SJ Park
2026-07-02  0:22     ` Andrew Morton
2026-06-30  4:08 ` [PATCH 15/18] mm/damon/paddr: remove attrs param from __damon_pa_check_access() SJ Park
2026-06-30  4:08 ` [PATCH 16/18] mm/damon/vaddr: remove attrs param from __damon_va_check_access() SJ Park
2026-06-30  4:22   ` sashiko-bot
2026-06-30  4:45     ` SJ Park
2026-06-30  4:08 ` [PATCH 17/18] mm/damon/core: remove damon_moving_sum() and its unit test SJ Park
2026-06-30  4:08 ` [PATCH 18/18] mm/damon/core: remove damon_region->nr_accesses_bp SJ Park
2026-06-30  4:52 ` [PATCH 00/18] mm/damon: optimize out nr_accesses_bp SJ Park

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