From patchwork Tue Jan 9 10:44:52 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shin'ichiro Kawasaki X-Patchwork-Id: 13514746 Received: from esa2.hgst.iphmx.com (esa2.hgst.iphmx.com [68.232.143.124]) (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 9AA1E364BE for ; Tue, 9 Jan 2024 10:45:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=wdc.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=wdc.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=wdc.com header.i=@wdc.com header.b="jaScfN08" DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=wdc.com; i=@wdc.com; q=dns/txt; s=dkim.wdc.com; t=1704797123; x=1736333123; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=3+n/5iunjDcw+H57LCR7N2v/PH2Oba7PX5raXGyqV0A=; b=jaScfN08zLkdR8Kkzeotdkvx5mlpi8fWG0IH186pMrTIiBwdmzY74Qms WDLfA+RjVjsIVnknf/8XTtGoLWyfLindM4lFsMiyzzaQ3yz+Q70mn4jmC X4Y+uN5haaKpJeQuaIBc23jM7Q9izwpL92A7+UgXD18DgowapepxI+4Xj z9M9YAQD81Nqgx/6cznIUyk8xPRq5FCMdNCHwYfbbJJhD3dHzKYSBhlZs mpGFeXjfN68+wxX5ot0Ppz4lmA4ryDAPcDFYLziKZ3B68cXPkzf+HB/6j b2KjUIpLi1fg8A0Tu4uxnsFtGDGm1t+3OmTkhB5F/b+NG70/d/8RJpRjJ Q==; X-CSE-ConnectionGUID: 5dzJ8ojpR4KrVS0YP14blQ== X-CSE-MsgGUID: sm5+V8aLSgauWZFlDuntAw== X-IronPort-AV: E=Sophos;i="6.04,182,1695657600"; d="scan'208";a="6473954" Received: from uls-op-cesaip01.wdc.com (HELO uls-op-cesaep01.wdc.com) ([199.255.45.14]) by ob1.hgst.iphmx.com with ESMTP; 09 Jan 2024 18:44:54 +0800 IronPort-SDR: AR2rgmqOwUMhRHlw5xeHzKOocgx71SFkLyjqcr1dwx5DSYtRgaKUKUP6qyGIsjAVxfoC1WKM5B +TNNo/mEKcNQ== Received: from uls-op-cesaip02.wdc.com ([10.248.3.37]) by uls-op-cesaep01.wdc.com with ESMTP/TLS/ECDHE-RSA-AES128-GCM-SHA256; 09 Jan 2024 01:55:14 -0800 IronPort-SDR: bavCG5zWEx41I+xG7SCvnIgtQ8Wv7KNgrFjJpfsh27NRfwdIBJHCyqlvsT/YUoEMXONyC47DbD qN1qau+44BAw== WDCIronportException: Internal Received: from unknown (HELO shindev.ssa.fujisawa.hgst.com) ([10.149.66.30]) by uls-op-cesaip02.wdc.com with ESMTP; 09 Jan 2024 02:44:54 -0800 From: Shin'ichiro Kawasaki To: linux-block@vger.kernel.org Cc: Shin'ichiro Kawasaki Subject: [PATCH blktests v2 1/2] common/null_blk: introduce _have_null_blk_feature Date: Tue, 9 Jan 2024 19:44:52 +0900 Message-ID: <20240109104453.3764096-2-shinichiro.kawasaki@wdc.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240109104453.3764096-1-shinichiro.kawasaki@wdc.com> References: <20240109104453.3764096-1-shinichiro.kawasaki@wdc.com> Precedence: bulk X-Mailing-List: linux-block@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Introduce a helper function _have_null_blk_feature which checks /sys/kernel/config/features. It allows test cases to adapt to null_blk feature support status. Signed-off-by: Shin'ichiro Kawasaki Reviewed-by: Chaitanya Kulkarni --- common/null_blk | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/common/null_blk b/common/null_blk index 91b78d4..164125d 100644 --- a/common/null_blk +++ b/common/null_blk @@ -10,6 +10,21 @@ _have_null_blk() { _have_driver null_blk } +_have_null_blk_feature() { + # Ensure that null_blk driver is built-in or loaded + if ! [[ -d /sys/module/null_blk ]]; then + if ! modprobe -q null_blk; then + return 1 + fi + if [[ ! "${MODULES_TO_UNLOAD[*]}" =~ null_blk ]]; then + MODULES_TO_UNLOAD+=(null_blk) + fi + fi + + # Check that null_blk has the specified feature + grep -qe "$1" /sys/kernel/config/nullb/features +} + _remove_null_blk_devices() { if [[ -d /sys/kernel/config/nullb ]]; then find /sys/kernel/config/nullb -mindepth 1 -maxdepth 1 \