[11/17] x86/numa: numa_{add,remove}_cpu: make cpu parameter unsigned

Commit Message

Mike Rapoport July 16, 2024, 11:13 a.m. UTC

From: "Mike Rapoport (Microsoft)" <[e-mail]>

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) <[e-mail]>
---
 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(-)

Comments

Jonathan Cameron July 19, 2024, 4:57 p.m. UTC | #1

On Tue, 16 Jul 2024 14:13:40 +0300
Mike Rapoport <[e-mail]> wrote:

> From: "Mike Rapoport (Microsoft)" <[e-mail]>
> 
> 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) <[e-mail]>
Makes sense for both reasons. FWIW given how simple it is.

Maybe worth bringing a few more functions inline with this?
Probably something for another day given we don't care about the
inconsistency for this series.

Reviewed-by: Jonathan Cameron <[e-mail]>

Patch

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 0a59e3ceecda..deaa4816a895 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);
 }