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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 v1.2 09/17] mm/damon/core: remove damon_verify_merge_regions_of()
Date: Sun, 21 Jun 2026 08:57:05 -0700	[thread overview]
Message-ID: <20260621155715.87932-10-sj@kernel.org> (raw)
In-Reply-To: <20260621155715.87932-1-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 7bb9b3c32d6fc..76ac58bf3dff9 100644
--- a/mm/damon/core.c
+++ b/mm/damon/core.c
@@ -3114,20 +3114,6 @@ 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
  *
@@ -3141,7 +3127,6 @@ 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:[~2026-06-21 15:57 UTC|newest]

Thread overview: 33+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-06-21 15:56 [RFC PATCH v1.2 00/17] mm/damon: optimize out nr_accesses_bp SeongJae Park
2026-06-21 15:56 ` [RFC PATCH v1.2 01/17] mm/damon: introduce damon_nr_accesses_mvsum() SeongJae Park
2026-06-21 16:10   ` sashiko-bot
2026-06-21 20:01     ` SeongJae Park
2026-06-21 15:56 ` [RFC PATCH v1.2 02/17] mm/damon/tests/core-kunit: test damon_mvsum() SeongJae Park
2026-06-21 15:56 ` [RFC PATCH v1.2 03/17] mm/damon/core: always update ->last_nr_accesses for intervals change SeongJae Park
2026-06-21 16:11   ` sashiko-bot
2026-06-21 20:23     ` SeongJae Park
2026-06-21 21:13       ` SeongJae Park
2026-06-21 15:57 ` [RFC PATCH v1.2 04/17] mm/damon/core: use damon_nr_accesses_mvsum() in __damos_valid_target() SeongJae Park
2026-06-21 15:57 ` [RFC PATCH v1.2 05/17] mm/damon/core: use damon_nr_accesses_mvsum() for damos region tracing SeongJae Park
2026-06-21 15:57 ` [RFC PATCH v1.2 06/17] mm/damon/sysfs-schemes: use damon_nr_accesses_mvsum() for damo regions SeongJae Park
2026-06-21 15:57 ` [RFC PATCH v1.2 07/17] mm/damon/core: remove damon_warn_fix_nr_accesses_corruption() SeongJae Park
2026-06-21 15:57 ` [RFC PATCH v1.2 08/17] mm/damon/core: remove damon_verify_reset_aggregated() SeongJae Park
2026-06-21 16:06   ` sashiko-bot
2026-06-21 20:24     ` SeongJae Park
2026-06-21 15:57 ` SeongJae Park [this message]
2026-06-21 18:09   ` [RFC PATCH v1.2 09/17] mm/damon/core: remove damon_verify_merge_regions_of() sashiko-bot
2026-06-21 20:35     ` SeongJae Park
2026-06-21 15:57 ` [RFC PATCH v1.2 10/17] mm/damon/tests/core-kunit: remove nr_accesses_bp setup and tests SeongJae Park
2026-06-21 15:57 ` [RFC PATCH v1.2 11/17] selftests/damon/drgn_dump_damon_status: do not dump nr_accesses_bp SeongJae Park
2026-06-21 15:57 ` [RFC PATCH v1.2 12/17] mm/damon/core: remove nr_accesses_bp setups and updates SeongJae Park
2026-06-21 18:10   ` sashiko-bot
2026-06-21 20:37     ` SeongJae Park
2026-06-21 15:57 ` [RFC PATCH v1.2 13/17] mm/damon/core: remove attrs param from damon_update_region_access_rate() SeongJae Park
2026-06-21 16:14   ` sashiko-bot
2026-06-21 20:40     ` SeongJae Park
2026-06-21 15:57 ` [RFC PATCH v1.2 14/17] mm/damonn/paddr: remove attrs param from __damon_pa_check_access() SeongJae Park
2026-06-21 16:07   ` sashiko-bot
2026-06-21 20:42     ` SeongJae Park
2026-06-21 15:57 ` [RFC PATCH v1.2 15/17] mm/damon/vaddr: remove attrs param from __damon_va_check_access() SeongJae Park
2026-06-21 15:57 ` [RFC PATCH v1.2 16/17] mm/damon/core: remove damon_moving_sum() and its unit test SeongJae Park
2026-06-21 15:57 ` [RFC PATCH v1.2 17/17] mm/damon: remove damon_region->nr_accesses_bp SeongJae Park

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