Message ID | 20230615154635.13660-3-ldufour@linux.ibm.com (mailing list archive) |
---|---|
State | Superseded |
Headers | show
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Thu, 15 Jun 2023 15:46:37 +0000 (GMT) Received: from smtpav05.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 4F92520043; Thu, 15 Jun 2023 15:46:37 +0000 (GMT) Received: from localhost.localdomain (unknown [9.144.159.119]) by smtpav05.fra02v.mail.ibm.com (Postfix) with ESMTP; Thu, 15 Jun 2023 15:46:37 +0000 (GMT) From: Laurent Dufour <ldufour@linux.ibm.com> To: linux-kernel@vger.kernel.org Subject: [PATCH 02/10] cpu/SMT: Move smt/control simple exit cases earlier Date: Thu, 15 Jun 2023 17:46:27 +0200 Message-ID: <20230615154635.13660-3-ldufour@linux.ibm.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230615154635.13660-1-ldufour@linux.ibm.com> References: <20230615154635.13660-1-ldufour@linux.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-GUID: FAcxk4wfwW8CUIwp5TqzGbT7Q6rnTN1S X-Proofpoint-ORIG-GUID: U67IZCq5D10t0m1mh1XSjryU96tz66Bq X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.957,Hydra:6.0.591,FMLib:17.11.176.26 definitions=2023-06-15_12,2023-06-15_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 phishscore=0 spamscore=0 malwarescore=0 impostorscore=0 suspectscore=0 lowpriorityscore=0 bulkscore=0 mlxlogscore=999 priorityscore=1501 clxscore=1015 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2305260000 definitions=main-2306150136 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List <linuxppc-dev.lists.ozlabs.org> List-Unsubscribe: <https://lists.ozlabs.org/options/linuxppc-dev>, <mailto:linuxppc-dev-request@lists.ozlabs.org?subject=unsubscribe> List-Archive: <http://lists.ozlabs.org/pipermail/linuxppc-dev/> List-Post: <mailto:linuxppc-dev@lists.ozlabs.org> List-Help: <mailto:linuxppc-dev-request@lists.ozlabs.org?subject=help> List-Subscribe: <https://lists.ozlabs.org/listinfo/linuxppc-dev>, <mailto:linuxppc-dev-request@lists.ozlabs.org?subject=subscribe> Cc: linux-arch@vger.kernel.org, dave.hansen@linux.intel.com, x86@kernel.org, mingo@redhat.com, bp@alien8.de, npiggin@gmail.com, tglx@linutronix.de, linuxppc-dev@lists.ozlabs.org Errors-To: linuxppc-dev-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" <linuxppc-dev-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org> |
Series |
Introduce SMT level and add PowerPC support
|
expand
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diff --git a/kernel/cpu.c b/kernel/cpu.c index 237394e0574a..c67049bb3fc8 100644 --- a/kernel/cpu.c +++ b/kernel/cpu.c @@ -2482,6 +2482,12 @@ __store_smt_control(struct device *dev, struct device_attribute *attr, { int ctrlval, ret; + if (cpu_smt_control == CPU_SMT_FORCE_DISABLED) + return -EPERM; + + if (cpu_smt_control == CPU_SMT_NOT_SUPPORTED) + return -ENODEV; + if (sysfs_streq(buf, "on")) ctrlval = CPU_SMT_ENABLED; else if (sysfs_streq(buf, "off")) @@ -2491,12 +2497,6 @@ __store_smt_control(struct device *dev, struct device_attribute *attr, else return -EINVAL; - if (cpu_smt_control == CPU_SMT_FORCE_DISABLED) - return -EPERM; - - if (cpu_smt_control == CPU_SMT_NOT_SUPPORTED) - return -ENODEV; - ret = lock_device_hotplug_sysfs(); if (ret) return ret;