From patchwork Thu Feb 15 07:41:45 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mihai Carabas X-Patchwork-Id: 773268 Received: from mx0b-00069f02.pphosted.com (mx0b-00069f02.pphosted.com [205.220.177.32]) (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 A17DE13AFB; Thu, 15 Feb 2024 08:58:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.177.32 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707987488; cv=none; b=uU22jSrqzDwWSWJ1kdZEkdVqla9GuFsjusfD/ogOJNxNg6hKIZntlAG8Y/p1gELgeVhjn5Ntr2r6KIxe/XM0+dqJpkxLsN3XGW7RYupvpmzVkKmmlxznKbtN88qSyZhNfqrc1I2rruySBqDDgFg6duJWMINLIbmL2xTa612X1R0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707987488; c=relaxed/simple; bh=qlzyj+96ZrnytPQobnPb0r/WF8j47o3LcA2aSb8TKyA=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References; b=hQyeIoTCpTMkeGuRsDjNbKTovHJ3Wy0ecbUcTs2N5r5hv4PniiwRqaKCRAocqwx29Es5jiE0p0YW1B+iC3wbbIL4Daet5vL1V4PIQ8m1pk602R+nn0xNH/IgPK4sLErBE0py44ibCz5bXnypTzfwj90FYoaP2xoiMoRNslOAWmY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=oracle.com; spf=pass smtp.mailfrom=oracle.com; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b=WRi9b08m; arc=none smtp.client-ip=205.220.177.32 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=oracle.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=oracle.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b="WRi9b08m" Received: from pps.filterd (m0246630.ppops.net [127.0.0.1]) by mx0b-00069f02.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 41F6hvO5031013; Thu, 15 Feb 2024 08:57:26 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=from : to : cc : subject : date : message-id : in-reply-to : references; s=corp-2023-11-20; bh=jvWR7NadDlFzwGkQ9GO0hvSkDG29BscyHclo7q5ReKo=; b=WRi9b08m9JZKxZQtqSdGDNGMJmfgsXFaXifrH7kiE2hTFz2TUI+Q6XxPldhhFkCaVw72 waBjiKtL2PDEUVvA784P4MiIMApM7zqObVd+8dcalPugRvgieK3Qjf4zkKlpsuyPFDje erx5W+eTal5sFRp5m1ILpVyWF36D5O1XZUNZK5FQp75bgriOQQX7f3ejSy8DER0TqTVf kVQCcegr1Uq4Z7ToTUpPrYYs9PLTq+8wtE2Li4m8SmUjcZcx0GsvgngNWszLq1K8+3GO nZ5aLwBzZt3g5fJj1cPgFLio2aHDdRxFYsDQKZSBnEphrlMVmMqYOPkexAJLauGHGeEd /Q== Received: from phxpaimrmta01.imrmtpd1.prodappphxaev1.oraclevcn.com (phxpaimrmta01.appoci.oracle.com [138.1.114.2]) by mx0b-00069f02.pphosted.com (PPS) with ESMTPS id 3w92db1g5c-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 15 Feb 2024 08:57:26 +0000 Received: from pps.filterd (phxpaimrmta01.imrmtpd1.prodappphxaev1.oraclevcn.com [127.0.0.1]) by phxpaimrmta01.imrmtpd1.prodappphxaev1.oraclevcn.com (8.17.1.19/8.17.1.19) with ESMTP id 41F7Lq25015051; Thu, 15 Feb 2024 08:57:25 GMT Received: from pps.reinject (localhost [127.0.0.1]) by phxpaimrmta01.imrmtpd1.prodappphxaev1.oraclevcn.com (PPS) with ESMTPS id 3w5yka73k2-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 15 Feb 2024 08:57:25 +0000 Received: from phxpaimrmta01.imrmtpd1.prodappphxaev1.oraclevcn.com (phxpaimrmta01.imrmtpd1.prodappphxaev1.oraclevcn.com [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 41F8vDct033748; Thu, 15 Feb 2024 08:57:24 GMT Received: from mihai.localdomain (ban25x6uut25.us.oracle.com [10.153.73.25]) by phxpaimrmta01.imrmtpd1.prodappphxaev1.oraclevcn.com (PPS) with ESMTP id 3w5yka73cg-4; Thu, 15 Feb 2024 08:57:24 +0000 From: Mihai Carabas To: linux-arm-kernel@lists.infradead.org Cc: kvm@vger.kernel.org, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, catalin.marinas@arm.com, will@kernel.org, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, x86@kernel.org, hpa@zytor.com, pbonzini@redhat.com, wanpengli@tencent.com, vkuznets@redhat.com, rafael@kernel.org, daniel.lezcano@linaro.org, akpm@linux-foundation.org, pmladek@suse.com, peterz@infradead.org, dianders@chromium.org, npiggin@gmail.com, rick.p.edgecombe@intel.com, joao.m.martins@oracle.com, juerg.haefliger@canonical.com, mic@digikod.net, mihai.carabas@oracle.com, arnd@arndb.de, ankur.a.arora@oracle.com Subject: [PATCH v4 3/8] governors/haltpoll: Drop kvm_para_available() check Date: Thu, 15 Feb 2024 09:41:45 +0200 Message-Id: <1707982910-27680-4-git-send-email-mihai.carabas@oracle.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1707982910-27680-1-git-send-email-mihai.carabas@oracle.com> References: <1707982910-27680-1-git-send-email-mihai.carabas@oracle.com> 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=2024-02-15_08,2024-02-14_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 mlxscore=0 bulkscore=0 suspectscore=0 phishscore=0 adultscore=0 spamscore=0 mlxlogscore=999 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311290000 definitions=main-2402150069 X-Proofpoint-GUID: 6QwEybfJDMqlGTaCvgEBGb9IQtnd8AGQ X-Proofpoint-ORIG-GUID: 6QwEybfJDMqlGTaCvgEBGb9IQtnd8AGQ Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: From: Joao Martins This is duplicated already in the haltpoll idle driver, and there's no need to re-check KVM guest availability in the governor. Either guests uses the module which explicitly selects this governor, and given that it has the lowest rating of all governors (menu=20,teo=19,ladder=10/25,haltpoll=9) means that unless it's the only one compiled in, it won't be selected. Dropping such check also allows to test haltpoll in baremetal. Signed-off-by: Joao Martins Signed-off-by: Mihai Carabas Acked-by: Rafael J. Wysocki --- drivers/cpuidle/governors/haltpoll.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/drivers/cpuidle/governors/haltpoll.c b/drivers/cpuidle/governors/haltpoll.c index 1dff3a52917d..c9b69651d377 100644 --- a/drivers/cpuidle/governors/haltpoll.c +++ b/drivers/cpuidle/governors/haltpoll.c @@ -143,10 +143,7 @@ static int haltpoll_enable_device(struct cpuidle_driver *drv, static int __init init_haltpoll(void) { - if (kvm_para_available()) - return cpuidle_register_governor(&haltpoll_governor); - - return 0; + return cpuidle_register_governor(&haltpoll_governor); } postcore_initcall(init_haltpoll);