1 files changed, 33 insertions, 8 deletions

diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
index eafbb2b05eb..eefae1de334 100644
--- a/arch/arm/kernel/smp.c
+++ b/arch/arm/kernel/smp.c
@@ -150,7 +150,7 @@ int __cpuinit __cpu_up(unsigned int cpu)
 	secondary_data.pgdir = 0;
 
 	*pmd_offset(pgd, PHYS_OFFSET) = __pmd(0);
-	pgd_free(pgd);
+	pgd_free(&init_mm, pgd);
 
 	if (ret) {
 		printk(KERN_CRIT "CPU%u: processor failed to boot\n", cpu);
@@ -290,6 +290,11 @@ asmlinkage void __cpuinit secondary_start_kernel(void)
 	local_irq_enable();
 	local_fiq_enable();
 
+	/*
+	 * Setup local timer for this CPU.
+	 */
+	local_timer_setup(cpu);
+
 	calibrate_delay();
 
 	smp_store_cpu_info(cpu);
@@ -300,11 +305,6 @@ asmlinkage void __cpuinit secondary_start_kernel(void)
 	cpu_set(cpu, cpu_online_map);
 
 	/*
-	 * Setup local timer for this CPU.
-	 */
-	local_timer_setup(cpu);
-
-	/*
 	 * OK, it's off to the idle thread for us
 	 */
 	cpu_idle();
@@ -454,6 +454,27 @@ int smp_call_function(void (*func)(void *info), void *info, int retry,
 }
 EXPORT_SYMBOL_GPL(smp_call_function);
 
+int smp_call_function_single(int cpu, void (*func)(void *info), void *info,
+			     int retry, int wait)
+{
+	/* prevent preemption and reschedule on another processor */
+	int current_cpu = get_cpu();
+	int ret = 0;
+
+	if (cpu == current_cpu) {
+		local_irq_disable();
+		func(info);
+		local_irq_enable();
+	} else
+		ret = smp_call_function_on_cpu(func, info, retry, wait,
+					       cpumask_of_cpu(cpu));
+
+	put_cpu();
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(smp_call_function_single);
+
 void show_ipi_list(struct seq_file *p)
 {
 	unsigned int cpu;
@@ -481,8 +502,7 @@ void show_local_irqs(struct seq_file *p)
 static void ipi_timer(void)
 {
 	irq_enter();
-	profile_tick(CPU_PROFILING);
-	update_process_times(user_mode(get_irq_regs()));
+	local_timer_interrupt();
 	irq_exit();
 }
 
@@ -621,6 +641,11 @@ void smp_send_timer(void)
 	send_ipi_message(mask, IPI_TIMER);
 }
 
+void smp_timer_broadcast(cpumask_t mask)
+{
+	send_ipi_message(mask, IPI_TIMER);
+}
+
 void smp_send_stop(void)
 {
 	cpumask_t mask = cpu_online_map;