From nobody Sat Feb 7 15:10:25 2026 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id BE2BB19C54F; Thu, 23 Oct 2025 01:25:46 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761182746; cv=none; b=OPjKmKF2gW3mi6Diz9cxUvktGZWfQLrDksQQ1e+BKAAPf7kx6mOhRkAHQikBQPPGGZhHnvvdcuxLa+Nq8SNYGgvkZTEfsduEo+a8KaycU6xaBHDyhXle88mK0yR3KgfxCC/NiJQGcVyJ2Yt2y3vV1SHWozIDANf/BHqIPAb5dfk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761182746; c=relaxed/simple; bh=mizIUChAFsqpIHY6nU9Fx3Ot5p8OeQz4ge3WLnGs1IU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=EL0FSzaLdrgsEwSd3jC0KXOCfW+Cp7hljXF1W961BSq00CswvKSaowAaGVarYu1Svp/pptBPvmasnzZCNFSKVqtc8Tg00sC5eKzZObM9qAU7idT5LAEWQUGZh7VnvTohbO0K6yRaNrZwXjjUi/fNUEVsUrzi7P537NuBhqQSy2s= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=PEC19Zx5; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="PEC19Zx5" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1E9DEC4CEF5; Thu, 23 Oct 2025 01:25:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1761182746; bh=mizIUChAFsqpIHY6nU9Fx3Ot5p8OeQz4ge3WLnGs1IU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=PEC19Zx5pg5krCxzuGcALpzBIgJ6qxXP6/2C8Uf6glMamZ7D9BRYKj115ySio1fuf L5wRsksk56d3RlbZEr/CGXziGLKEIglLy1r8XJz7BPIog3T9em2X7ycXDpkxA75XcX TuG1/kuGVN1WH6pJZHLeRAMwoa5mMed1mKlhtRW1c67mhQXzS6Wyslzg7phVLJtTpa FgVPQOwv8MTGvJYESIoeMPgl4vgVkE668l/Kptr7SZlfRsqGFhVA1yKwZLhRTO9wli HDkQvHDkgF67ccEGcxs/hDFYlGZ9qbeAsYTDc9m+pxhLsG9msCwHGOlgGaXVNpQKJ4 E8BTvG3MYgalw== From: SeongJae Park To: Andrew Morton Cc: SeongJae Park , Bijan Tabatabai , Shuah Khan , damon@lists.linux.dev, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH 9/9] selftests/damon/sysfs: add obsolete_target test Date: Wed, 22 Oct 2025 18:25:33 -0700 Message-ID: <20251023012535.69625-10-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20251023012535.69625-1-sj@kernel.org> References: <20251023012535.69625-1-sj@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" A new DAMON sysfs file for pin-point target removal, namely obsolete_target, has been added. Add a test for the functionality. It starts DAMON with three monitoring target processes, mark one in the middle as obsolete, commit it, and confirm the internal DAMON status is updated to remove the target in the middle. Signed-off-by: SeongJae Park --- tools/testing/selftests/damon/sysfs.py | 37 ++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) diff --git a/tools/testing/selftests/damon/sysfs.py b/tools/testing/selftes= ts/damon/sysfs.py index fd8d3698326e..b34aea0a6775 100755 --- a/tools/testing/selftests/damon/sysfs.py +++ b/tools/testing/selftests/damon/sysfs.py @@ -279,5 +279,42 @@ def main(): =20 kdamonds.stop() =20 + # test obsolete_target. + proc1 =3D subprocess.Popen(['sh'], stdout=3Dsubprocess.PIPE, + stderr=3Dsubprocess.PIPE) + proc2 =3D subprocess.Popen(['sh'], stdout=3Dsubprocess.PIPE, + stderr=3Dsubprocess.PIPE) + proc3 =3D subprocess.Popen(['sh'], stdout=3Dsubprocess.PIPE, + stderr=3Dsubprocess.PIPE) + kdamonds =3D _damon_sysfs.Kdamonds( + [_damon_sysfs.Kdamond( + contexts=3D[_damon_sysfs.DamonCtx( + ops=3D'vaddr', + targets=3D[ + _damon_sysfs.DamonTarget(pid=3Dproc1.pid), + _damon_sysfs.DamonTarget(pid=3Dproc2.pid), + _damon_sysfs.DamonTarget(pid=3Dproc3.pid), + ], + schemes=3D[_damon_sysfs.Damos()], + )])]) + err =3D kdamonds.start() + if err is not None: + print('kdamond start failed: %s' % err) + exit(1) + kdamonds.kdamonds[0].contexts[0].targets[1].obsolete =3D True + kdamonds.kdamonds[0].commit() + + status, err =3D dump_damon_status_dict(kdamonds.kdamonds[0].pid) + if err is not None: + print(err) + kdamonds.stop() + exit(1) + + del kdamonds.kdamonds[0].contexts[0].targets[1] + + assert_ctxs_committed(kdamonds.kdamonds[0].contexts, status['contexts'= ]) + + kdamonds.stop() + if __name__ =3D=3D '__main__': main() --=20 2.47.3