ARM: smp: Make SMP operations mandatory

Now that all SMP platforms have been converted to use struct
smp_operations, remove the "weak" attribute from the hooks
in smp.c, and make the functions static wherever possible.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Acked-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm/include/asm/smp.h

@@ -60,15 +60,6 @@ extern int boot_secondary(unsigned int cpu, struct task_struct *);
  */
 asmlinkage void secondary_start_kernel(void);
 
-/*
- * Perform platform specific initialisation of the specified CPU.
- */
-extern void platform_secondary_init(unsigned int cpu);
-
-/*
- * Initialize cpu_possible map, and enable coherency
- */
-extern void platform_smp_prepare_cpus(unsigned int);
 
 /*
  * Initial data for bringing up a secondary CPU.
@@ -81,15 +72,10 @@ struct secondary_data {
 extern struct secondary_data secondary_data;
 
 extern int __cpu_disable(void);
-extern int platform_cpu_disable(unsigned int cpu);
 
 extern void __cpu_die(unsigned int cpu);
 extern void cpu_die(void);
 
-extern void platform_cpu_die(unsigned int cpu);
-extern int platform_cpu_kill(unsigned int cpu);
-extern void platform_cpu_enable(unsigned int cpu);
-
 extern void arch_send_call_function_single_ipi(int cpu);
 extern void arch_send_call_function_ipi_mask(const struct cpumask *mask);
 

arch/arm/kernel/smp.c

@@ -110,25 +110,25 @@ int __cpuinit __cpu_up(unsigned int cpu, struct task_struct *idle)
 }
 
 /* platform specific SMP operations */
-void __attribute__((weak)) __init smp_init_cpus(void)
+void __init smp_init_cpus(void)
 {
 	if (smp_ops.smp_init_cpus)
 		smp_ops.smp_init_cpus();
 }
 
-void __attribute__((weak)) __init platform_smp_prepare_cpus(unsigned int max_cpus)
+static void __init platform_smp_prepare_cpus(unsigned int max_cpus)
 {
 	if (smp_ops.smp_prepare_cpus)
 		smp_ops.smp_prepare_cpus(max_cpus);
 }
 
-void __attribute__((weak)) __cpuinit platform_secondary_init(unsigned int cpu)
+static void __cpuinit platform_secondary_init(unsigned int cpu)
 {
 	if (smp_ops.smp_secondary_init)
 		smp_ops.smp_secondary_init(cpu);
 }
 
-int __attribute__((weak)) __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle)
+int __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle)
 {
 	if (smp_ops.smp_boot_secondary)
 		return smp_ops.smp_boot_secondary(cpu, idle);
@@ -138,20 +138,20 @@ int __attribute__((weak)) __cpuinit boot_secondary(unsigned int cpu, struct task
 #ifdef CONFIG_HOTPLUG_CPU
 static void percpu_timer_stop(void);
 
-int __attribute__((weak)) platform_cpu_kill(unsigned int cpu)
+static int platform_cpu_kill(unsigned int cpu)
 {
 	if (smp_ops.cpu_kill)
 		return smp_ops.cpu_kill(cpu);
 	return 1;
 }
 
-void __attribute__((weak)) platform_cpu_die(unsigned int cpu)
+static void platform_cpu_die(unsigned int cpu)
 {
 	if (smp_ops.cpu_die)
 		smp_ops.cpu_die(cpu);
 }
 
-int __attribute__((weak)) platform_cpu_disable(unsigned int cpu)
+static int platform_cpu_disable(unsigned int cpu)
 {
 	if (smp_ops.cpu_disable)
 		return smp_ops.cpu_disable(cpu);
@@ -166,7 +166,7 @@ int __attribute__((weak)) platform_cpu_disable(unsigned int cpu)
 /*
  * __cpu_disable runs on the processor to be shutdown.
  */
-int __cpu_disable(void)
+int __cpuinit __cpu_disable(void)
 {
 	unsigned int cpu = smp_processor_id();
 	int ret;
@@ -209,7 +209,7 @@ static DECLARE_COMPLETION(cpu_died);
  * called on the thread which is asking for a CPU to be shutdown -
  * waits until shutdown has completed, or it is timed out.
  */
-void __cpu_die(unsigned int cpu)
+void __cpuinit __cpu_die(unsigned int cpu)
 {
 	if (!wait_for_completion_timeout(&cpu_died, msecs_to_jiffies(5000))) {
 		pr_err("CPU%u: cpu didn't die\n", cpu);