From: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>
To: linuxppc-dev@lists.ozlabs.org, mpe@ellerman.id.au
Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>,
Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Subject: [PATCH 1/2] powerpc/numa: Return the first online node instead of 0
Date: Thu, 23 Jun 2022 18:24:41 +0530 [thread overview]
Message-ID: <20220623125442.645240-1-aneesh.kumar@linux.ibm.com> (raw)
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 <aneesh.kumar@linux.ibm.com>
---
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
next reply other threads:[~2022-06-23 12:55 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-23 12:54 Aneesh Kumar K.V [this message]
2022-06-23 12:54 ` [PATCH 2/2] powerpc/numa: Return the first online node if device tree mapping returns a not online node Aneesh Kumar K.V
2022-06-24 8:50 ` Srikar Dronamraju
2022-06-27 5:27 ` Aneesh Kumar K.V
2022-06-24 8:39 ` [PATCH 1/2] powerpc/numa: Return the first online node instead of 0 Srikar Dronamraju
2022-06-27 14:05 ` Aneesh Kumar K.V
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