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Diffstat (limited to 'arch/arm/kernel/smp.c')
-rw-r--r--arch/arm/kernel/smp.c21
1 files changed, 14 insertions, 7 deletions
diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
index 421329f5e18..070bcb7a630 100644
--- a/arch/arm/kernel/smp.c
+++ b/arch/arm/kernel/smp.c
@@ -7,6 +7,7 @@
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
+#include <linux/module.h>
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/spinlock.h>
@@ -19,6 +20,7 @@
#include <linux/cpu.h>
#include <linux/smp.h>
#include <linux/seq_file.h>
+#include <linux/irq.h>
#include <asm/atomic.h>
#include <asm/cacheflush.h>
@@ -449,6 +451,7 @@ int smp_call_function(void (*func)(void *info), void *info, int retry,
return smp_call_function_on_cpu(func, info, retry, wait,
cpu_online_map);
}
+EXPORT_SYMBOL_GPL(smp_call_function);
void show_ipi_list(struct seq_file *p)
{
@@ -474,25 +477,26 @@ void show_local_irqs(struct seq_file *p)
seq_putc(p, '\n');
}
-static void ipi_timer(struct pt_regs *regs)
+static void ipi_timer(void)
{
- int user = user_mode(regs);
-
irq_enter();
- profile_tick(CPU_PROFILING, regs);
- update_process_times(user);
+ profile_tick(CPU_PROFILING);
+ update_process_times(user_mode(get_irq_regs()));
irq_exit();
}
#ifdef CONFIG_LOCAL_TIMERS
asmlinkage void do_local_timer(struct pt_regs *regs)
{
+ struct pt_regs *old_regs = set_irq_regs(regs);
int cpu = smp_processor_id();
if (local_timer_ack()) {
irq_stat[cpu].local_timer_irqs++;
- ipi_timer(regs);
+ ipi_timer();
}
+
+ set_irq_regs(old_regs);
}
#endif
@@ -551,6 +555,7 @@ asmlinkage void do_IPI(struct pt_regs *regs)
{
unsigned int cpu = smp_processor_id();
struct ipi_data *ipi = &per_cpu(ipi_data, cpu);
+ struct pt_regs *old_regs = set_irq_regs(regs);
ipi->ipi_count++;
@@ -574,7 +579,7 @@ asmlinkage void do_IPI(struct pt_regs *regs)
switch (nextmsg) {
case IPI_TIMER:
- ipi_timer(regs);
+ ipi_timer();
break;
case IPI_RESCHEDULE:
@@ -599,6 +604,8 @@ asmlinkage void do_IPI(struct pt_regs *regs)
}
} while (msgs);
}
+
+ set_irq_regs(old_regs);
}
void smp_send_reschedule(int cpu)