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Thu, 23 Jun 2022 12:54:51 +0000 (GMT) Received: from skywalker.ibmuc.com (unknown [9.43.18.68]) by b03ledav003.gho.boulder.ibm.com (Postfix) with ESMTP; Thu, 23 Jun 2022 12:54:50 +0000 (GMT) From: "Aneesh Kumar K.V" To: linuxppc-dev@lists.ozlabs.org, mpe@ellerman.id.au Subject: [PATCH 1/2] powerpc/numa: Return the first online node instead of 0 Date: Thu, 23 Jun 2022 18:24:41 +0530 Message-Id: <20220623125442.645240-1-aneesh.kumar@linux.ibm.com> X-Mailer: git-send-email 2.36.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-GUID: xIP8AaqiLz3KBdzpr1uCG07nROTk_vxP X-Proofpoint-ORIG-GUID: xIP8AaqiLz3KBdzpr1uCG07nROTk_vxP X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.883,Hydra:6.0.517,FMLib:17.11.122.1 definitions=2022-06-23_05,2022-06-23_01,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 mlxlogscore=952 phishscore=0 lowpriorityscore=0 mlxscore=0 impostorscore=0 suspectscore=0 malwarescore=0 priorityscore=1501 adultscore=0 spamscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2204290000 definitions=main-2206230050 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "Aneesh Kumar K.V" , Srikar Dronamraju Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" If early cpu to node mapping finds an invalid node id, return the first online node instead of node 0. With commit e75130f20b1f ("powerpc/numa: Offline memoryless cpuless node 0") the kernel marks node 0 offline in certain scenarios. Signed-off-by: Aneesh Kumar K.V --- arch/powerpc/include/asm/topology.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/powerpc/include/asm/topology.h b/arch/powerpc/include/asm/topology.h index 8a4d4f4d9749..704088b1d53c 100644 --- a/arch/powerpc/include/asm/topology.h +++ b/arch/powerpc/include/asm/topology.h @@ -60,7 +60,7 @@ static inline int early_cpu_to_node(int cpu) * Fall back to node 0 if nid is unset (it should be, except bugs). * This allows callers to safely do NODE_DATA(early_cpu_to_node(cpu)). */ - return (nid < 0) ? 0 : nid; + return (nid < 0) ? first_online_node : nid; } int of_drconf_to_nid_single(struct drmem_lmb *lmb); -- 2.36.1