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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Fri, 12 Oct 2018 08:00:05 +0100 Received: from d06av22.portsmouth.uk.ibm.com (d06av22.portsmouth.uk.ibm.com [9.149.105.58]) by b06cxnps3074.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id w9C703ms8323426 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Fri, 12 Oct 2018 07:00:03 GMT Received: from d06av22.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 742EA4C059; Fri, 12 Oct 2018 09:59:39 +0100 (BST) Received: from d06av22.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 0643E4C04E; Fri, 12 Oct 2018 09:59:37 +0100 (BST) Received: from linux.vnet.ibm.com (unknown [9.126.150.29]) by d06av22.portsmouth.uk.ibm.com (Postfix) with SMTP; Fri, 12 Oct 2018 09:59:36 +0100 (BST) Date: Fri, 12 Oct 2018 12:30:00 +0530 From: Srikar Dronamraju To: "Gautham R. Shenoy" Cc: Dave Hansen , "Aneesh Kumar K.V" , Michael Ellerman , Benjamin Herrenschmidt , Michael Neuling , Vaidyanathan Srinivasan , Akshay Adiga , Shilpasri G Bhat , "Oliver O'Halloran" , Nicholas Piggin , Murilo Opsfelder Araujo , Anton Blanchard , linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v10 2/3] powerpc: Use cpu_smallcore_sibling_mask at SMT level on bigcores Reply-To: Srikar Dronamraju References: <1539235983-25259-1-git-send-email-ego@linux.vnet.ibm.com> <1539235983-25259-3-git-send-email-ego@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline In-Reply-To: <1539235983-25259-3-git-send-email-ego@linux.vnet.ibm.com> User-Agent: Mutt/1.9.2 (2017-12-15) X-TM-AS-GCONF: 00 x-cbid: 18101207-0016-0000-0000-000002120903 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18101207-0017-0000-0000-00003269839F Message-Id: <20181012070000.GB28228@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2018-10-12_06:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=836 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1807170000 definitions=main-1810120070 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Gautham R. Shenoy [2018-10-11 11:03:02]: > From: "Gautham R. Shenoy" > > > +#ifdef CONFIG_SCHED_SMT > + if (has_big_cores) { > + pr_info("Using small cores at SMT level\n"); > + power9_topology[0].mask = smallcore_smt_mask; > + powerpc_topology[0].mask = smallcore_smt_mask; > + } > +#endif > /* I dont see a way a system can have has_big_core set but use powerpc_topology.