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From: SeongJae Park <sj@kernel.org>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: SeongJae Park <sj@kernel.org>,
	damon@lists.linux.dev, kernel-team@meta.com,
	linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: [PATCH 12/14] mm/damon/core: destroy targets when kdamond_fn() finish
Date: Sat, 12 Jul 2025 12:50:14 -0700	[thread overview]
Message-ID: <20250712195016.151108-13-sj@kernel.org> (raw)
In-Reply-To: <20250712195016.151108-1-sj@kernel.org>

When kdamond_fn() completes, the targets are kept.  Those are kept to
let callers do additional cleanups if they need.  There are no such
additional cleanups though.  DAMON sysfs interface deallocates those in
before_terminate() callback, to reduce unnecessary memory usage, for
[f]vaddr use case.  Just destroy the targets for every case in the core
layer.  This saves more memory and simplifies the logic.

Signed-off-by: SeongJae Park <sj@kernel.org>
---
 mm/damon/core.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/mm/damon/core.c b/mm/damon/core.c
index 9554743dc992..ffd1a061c2cb 100644
--- a/mm/damon/core.c
+++ b/mm/damon/core.c
@@ -2657,6 +2657,7 @@ static int kdamond_fn(void *data)
 		running_exclusive_ctxs = false;
 	mutex_unlock(&damon_lock);
 
+	damon_destroy_targets(ctx);
 	return 0;
 }
 
-- 
2.39.5


  parent reply	other threads:[~2025-07-12 19:51 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-07-12 19:50 [PATCH 00/14] mm/damon: remove damon_callback SeongJae Park
2025-07-12 19:50 ` [PATCH 01/14] mm/damon: accept parallel damon_call() requests SeongJae Park
2025-07-12 19:50 ` [PATCH 02/14] mm/damon/core: introduce repeat mode damon_call() SeongJae Park
2025-07-12 19:50 ` [PATCH 03/14] mm/damon/stat: use damon_call() repeat mode instead of damon_callback SeongJae Park
2025-07-12 19:50 ` [PATCH 04/14] mm/damon/reclaim: " SeongJae Park
2025-07-12 19:50 ` [PATCH 05/14] mm/damon/lru_sort: " SeongJae Park
2025-07-12 19:50 ` [PATCH 06/14] samples/damon/prcl: " SeongJae Park
2025-07-12 19:50 ` [PATCH 07/14] samples/damon/wsse: " SeongJae Park
2025-07-12 19:50 ` [PATCH 08/14] mm/damon/core: do not call ops.cleanup() when destroying targets SeongJae Park
2025-07-12 19:50 ` [PATCH 09/14] mm/damon/core: add cleanup_target() ops callback SeongJae Park
2025-07-12 19:50 ` [PATCH 10/14] mm/damon/vaddr: put pid in cleanup_target() SeongJae Park
2025-07-12 19:50 ` [PATCH 11/14] mm/damon/sysfs: remove damon_sysfs_destroy_targets() SeongJae Park
2025-07-12 19:50 ` SeongJae Park [this message]
2025-07-12 19:50 ` [PATCH 13/14] mm/damon/sysfs: remove damon_sysfs_before_terminate() SeongJae Park
2025-07-12 19:50 ` [PATCH 14/14] mm/damon/core: remove damon_callback SeongJae Park

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