From: Scott Cheloha <cheloha@linux.ibm.com>
To: linuxppc-dev@ozlabs.org
Cc: Nathan Lynch <nathanl@linux.ibm.com>,
Laurent Dufour <ldufour@linux.vnet.ibm.com>,
kernel test robot <lkp@intel.com>
Subject: [PATCH v2] powerpc: topology.h: fix build when CONFIG_NUMA=n
Date: Thu, 5 Nov 2020 16:30:40 -0600 [thread overview]
Message-ID: <20201105223040.3612663-1-cheloha@linux.ibm.com> (raw)
Add a non-NUMA definition for of_drconf_to_nid_single() to topology.h
so we have one even if powerpc/mm/numa.c is not compiled. On a non-NUMA
kernel the appropriate node id is always first_online_node.
Signed-off-by: Scott Cheloha <cheloha@linux.ibm.com>
Reported-by: kernel test robot <lkp@intel.com>
Fixes: 72cdd117c449 ("pseries/hotplug-memory: hot-add: skip redundant LMB lookup")
---
v1: Initial patch.
v2: Incorporate suggested cleanups from Christophe Leroy.
arch/powerpc/include/asm/topology.h | 12 +++++++++---
1 file changed, 9 insertions(+), 3 deletions(-)
diff --git a/arch/powerpc/include/asm/topology.h b/arch/powerpc/include/asm/topology.h
index 8728590f514a..3beeb030cd78 100644
--- a/arch/powerpc/include/asm/topology.h
+++ b/arch/powerpc/include/asm/topology.h
@@ -6,6 +6,7 @@
struct device;
struct device_node;
+struct drmem_lmb;
#ifdef CONFIG_NUMA
@@ -61,6 +62,9 @@ static inline int early_cpu_to_node(int cpu)
*/
return (nid < 0) ? 0 : nid;
}
+
+int of_drconf_to_nid_single(struct drmem_lmb *lmb);
+
#else
static inline int early_cpu_to_node(int cpu) { return 0; }
@@ -84,10 +88,12 @@ static inline int cpu_distance(__be32 *cpu1_assoc, __be32 *cpu2_assoc)
return 0;
}
-#endif /* CONFIG_NUMA */
+static inline int of_drconf_to_nid_single(struct drmem_lmb *lmb)
+{
+ return first_online_node;
+}
-struct drmem_lmb;
-int of_drconf_to_nid_single(struct drmem_lmb *lmb);
+#endif /* CONFIG_NUMA */
#if defined(CONFIG_NUMA) && defined(CONFIG_PPC_SPLPAR)
extern int find_and_online_cpu_nid(int cpu);
--
2.28.0
next reply other threads:[~2020-11-05 22:32 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-05 22:30 Scott Cheloha [this message]
2020-11-06 6:58 ` [PATCH v2] powerpc: topology.h: fix build when CONFIG_NUMA=n Christophe Leroy
2020-11-08 10:29 ` Michael Ellerman
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