From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) (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 57C1F2A8C1 for ; Fri, 8 Mar 2024 19:23:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.168.131 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709925798; cv=none; b=e7aP1mdK1KLC8o7C1/0VZqn793aU7WjSI/XaLJPHNnYCBU/q96s5u/uh3z/oxB7ratynHtkoxeGLL4SHC5Ynpbjpn9Ao3WCeuIRq71OUoMe2LcH4o7M+gf6WEzmEyz51bcZnvUfalEsPOS+TRS6qyX/BI+bPObyENvRibIxUe2Q= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709925798; c=relaxed/simple; bh=a6lRYeFSEWwJIvgNJiuCEmtmp39uUP1nfwTccUdadkI=; h=Message-ID:Date:MIME-Version:To:CC:From:Subject:Content-Type; b=aeHICi/0bnjRstoCVdK2Nv2BSrJOkVROmh95t8s0UjqLFMXVfxy0+IEEFObd3KEVUqORu2eaDQV2AFYGguIZkDY10APW9Sx9ra1Xr0mu/nqHbrDJU3l2ttyqD/QhfYd9QoluikqIAltI63O2gIK5lmT2lP3t+xKA1mkSgnuVDwQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com; spf=pass smtp.mailfrom=quicinc.com; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b=E67n0Hjj; arc=none smtp.client-ip=205.220.168.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=quicinc.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b="E67n0Hjj" Received: from pps.filterd (m0279863.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.24/8.17.1.24) with ESMTP id 428GvBQm029115; Fri, 8 Mar 2024 19:23:06 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h= message-id:date:mime-version:to:cc:from:subject:content-type :content-transfer-encoding; s=qcppdkim1; bh=a6lRYeFSEWwJIvgNJiuC Emtmp39uUP1nfwTccUdadkI=; b=E67n0Hjj+bjNP9BgWip48IvnsDdVpFciw68T Ubgm7sJNZ+1wnuaEy6QyKB2YXUx/9kFXaNkz+FLrQjBE+EW0MS2IkmlzJJBLrryg sJwg1aqZa42K3q8QswzCJ+al+EljnrT4+8ZqIzy5Tx84e+fuoti9GQrQ9kkY06GJ wrZIuIn3Ws8+Sql2lAfnwufn5jAq35UqKv7lkSjmKcJcWyBPHd8CKsKZMZgAyuiU tgpxrtNpwnJHLcGF5B+2x/NN6u+DOO+6qxpZvXA12vHkrEpoM0CK2yFI4Wc1ktNd cqPxn4Vb88s5BMReoLR+vy3kzwHAMnc3q8Rec2FpUdT6plXvJQ== Received: from nalasppmta02.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3wr2v28uu8-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 08 Mar 2024 19:23:06 +0000 (GMT) Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA02.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 428JN5NB009522 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 8 Mar 2024 19:23:05 GMT Received: from [10.110.115.232] (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.40; Fri, 8 Mar 2024 11:23:04 -0800 Message-ID: <4b60941b-d0c0-4483-aed8-efd40a3f3d76@quicinc.com> Date: Fri, 8 Mar 2024 11:23:03 -0800 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Content-Language: en-US To: Peter Zijlstra , Ingo Molnar , Will Deacon , Waiman Long , Boqun Feng CC: open list From: Jeff Johnson Subject: cleanup guard for spin_lock_bh? Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nalasex01a.na.qualcomm.com (10.47.209.196) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: RBbUkSxjkQW2Jg7SPEWKJurzAqGljw5g X-Proofpoint-ORIG-GUID: RBbUkSxjkQW2Jg7SPEWKJurzAqGljw5g X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-03-08_08,2024-03-06_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 suspectscore=0 phishscore=0 adultscore=0 malwarescore=0 mlxscore=0 mlxlogscore=527 priorityscore=1501 impostorscore=0 bulkscore=0 clxscore=1011 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2402120000 definitions=main-2403080153 Is there a reason there isn't a cleanup guard for spin_lock_bh? Or am I overlooking it? I tried to search lore for any discussion on this point, but didn't see a clear match. /jeff