[PATCH v4 16/26] x86/numa: numa_{add,remove}_cpu: make cpu parameter unsigned

Mike Rapoport <[email protected]>
Newsgroups gmane.linux.documentation,gmane.linux.kernel,gmane.linux.drivers.devicetree,gmane.linux.acpi.devel,gmane.linux.kernel.cross-arch,gmane.linux.ports.arm.kernel,gmane.linux.ports.mips,gmane.linux.kernel.mm,gmane.linux.ports.riscv,gmane.linux.ports.sh.devel,gmane.linux.ports.ppc64.devel,gmane.linux.ports.sparc
Message-ID <[email protected]>
From: "Mike Rapoport (Microsoft)" <[email protected]>

CPU id cannot be negative.

Making it unsigned also aligns with declarations in
include/asm-generic/numa.h used by arm64 and riscv and allows sharing
numa emulation code with these architectures.

Signed-off-by: Mike Rapoport (Microsoft) <[email protected]>
Reviewed-by: Jonathan Cameron <[email protected]>
Tested-by: Zi Yan <[email protected]> # for x86_64 and arm64
Tested-by: Jonathan Cameron <[email protected]> [arm64 + CXL via QEMU]
Acked-by: Dan Williams <[email protected]>
Acked-by: David Hildenbrand <[email protected]>
---
 arch/x86/include/asm/numa.h  | 10 +++++-----
 arch/x86/mm/numa.c           | 10 +++++-----
 arch/x86/mm/numa_emulation.c | 10 +++++-----
 3 files changed, 15 insertions(+), 15 deletions(-)

diff --git a/arch/x86/include/asm/numa.h b/arch/x86/include/asm/numa.h
index b22c85c1ef18..6fa5ea925aac 100644
--- a/arch/x86/include/asm/numa.h
+++ b/arch/x86/include/asm/numa.h
@@ -54,20 +54,20 @@ static inline int numa_cpu_node(int cpu)
 extern void numa_set_node(int cpu, int node);
 extern void numa_clear_node(int cpu);
 extern void __init init_cpu_to_node(void);
-extern void numa_add_cpu(int cpu);
-extern void numa_remove_cpu(int cpu);
+extern void numa_add_cpu(unsigned int cpu);
+extern void numa_remove_cpu(unsigned int cpu);
 extern void init_gi_nodes(void);
 #else	/* CONFIG_NUMA */
 static inline void numa_set_node(int cpu, int node)	{ }
 static inline void numa_clear_node(int cpu)		{ }
 static inline void init_cpu_to_node(void)		{ }
-static inline void numa_add_cpu(int cpu)		{ }
-static inline void numa_remove_cpu(int cpu)		{ }
+static inline void numa_add_cpu(unsigned int cpu)	{ }
+static inline void numa_remove_cpu(unsigned int cpu)	{ }
 static inline void init_gi_nodes(void)			{ }
 #endif	/* CONFIG_NUMA */
 
 #ifdef CONFIG_DEBUG_PER_CPU_MAPS
-void debug_cpumask_set_cpu(int cpu, int node, bool enable);
+void debug_cpumask_set_cpu(unsigned int cpu, int node, bool enable);
 #endif
 
 #ifdef CONFIG_NUMA_EMU
diff --git a/arch/x86/mm/numa.c b/arch/x86/mm/numa.c
index 2acf8d17b9b8..bf56f667fe0f 100644
--- a/arch/x86/mm/numa.c
+++ b/arch/x86/mm/numa.c
@@ -741,12 +741,12 @@ void __init init_cpu_to_node(void)
 #ifndef CONFIG_DEBUG_PER_CPU_MAPS
 
 # ifndef CONFIG_NUMA_EMU
-void numa_add_cpu(int cpu)
+void numa_add_cpu(unsigned int cpu)
 {
 	cpumask_set_cpu(cpu, node_to_cpumask_map[early_cpu_to_node(cpu)]);
 }
 
-void numa_remove_cpu(int cpu)
+void numa_remove_cpu(unsigned int cpu)
 {
 	cpumask_clear_cpu(cpu, node_to_cpumask_map[early_cpu_to_node(cpu)]);
 }
@@ -784,7 +784,7 @@ int early_cpu_to_node(int cpu)
 	return per_cpu(x86_cpu_to_node_map, cpu);
 }
 
-void debug_cpumask_set_cpu(int cpu, int node, bool enable)
+void debug_cpumask_set_cpu(unsigned int cpu, int node, bool enable)
 {
 	struct cpumask *mask;
 
@@ -816,12 +816,12 @@ static void numa_set_cpumask(int cpu, bool enable)
 	debug_cpumask_set_cpu(cpu, early_cpu_to_node(cpu), enable);
 }
 
-void numa_add_cpu(int cpu)
+void numa_add_cpu(unsigned int cpu)
 {
 	numa_set_cpumask(cpu, true);
 }
 
-void numa_remove_cpu(int cpu)
+void numa_remove_cpu(unsigned int cpu)
 {
 	numa_set_cpumask(cpu, false);
 }
diff --git a/arch/x86/mm/numa_emulation.c b/arch/x86/mm/numa_emulation.c
index fb4814497446..235f8a4eb2fa 100644
--- a/arch/x86/mm/numa_emulation.c
+++ b/arch/x86/mm/numa_emulation.c
@@ -514,7 +514,7 @@ void __init numa_emulation(struct numa_meminfo *numa_meminfo, int numa_dist_cnt)
 }
 
 #ifndef CONFIG_DEBUG_PER_CPU_MAPS
-void numa_add_cpu(int cpu)
+void numa_add_cpu(unsigned int cpu)
 {
 	int physnid, nid;
 
@@ -532,7 +532,7 @@ void numa_add_cpu(int cpu)
 			cpumask_set_cpu(cpu, node_to_cpumask_map[nid]);
 }
 
-void numa_remove_cpu(int cpu)
+void numa_remove_cpu(unsigned int cpu)
 {
 	int i;
 
@@ -540,7 +540,7 @@ void numa_remove_cpu(int cpu)
 		cpumask_clear_cpu(cpu, node_to_cpumask_map[i]);
 }
 #else	/* !CONFIG_DEBUG_PER_CPU_MAPS */
-static void numa_set_cpumask(int cpu, bool enable)
+static void numa_set_cpumask(unsigned int cpu, bool enable)
 {
 	int nid, physnid;
 
@@ -560,12 +560,12 @@ static void numa_set_cpumask(int cpu, bool enable)
 	}
 }
 
-void numa_add_cpu(int cpu)
+void numa_add_cpu(unsigned int cpu)
 {
 	numa_set_cpumask(cpu, true);
 }
 
-void numa_remove_cpu(int cpu)
+void numa_remove_cpu(unsigned int cpu)
 {
 	numa_set_cpumask(cpu, false);
 }
-- 
2.43.0
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