[PATCH 02/12] ARM: smp: Convert stop_lock to raw_spinlock

[Uwe Kleine-König]

From: Thomas Gleixner <tglx at linutronix.de>

stop_lock needs to be a real spinlock on preempt-rt. Convert it to
a raw_spinlock. No change for !RT kernels.

Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig at pengutronix.de>
---
 arch/arm/kernel/smp.c |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
index 40dc74f2..8b242af 100644
--- a/arch/arm/kernel/smp.c
+++ b/arch/arm/kernel/smp.c
@@ -464,7 +464,7 @@ void __cpuinit percpu_timer_setup(void)
 	local_timer_setup(evt);
 }
 
-static DEFINE_SPINLOCK(stop_lock);
+static DEFINE_RAW_SPINLOCK(stop_lock);
 
 /*
  * ipi_cpu_stop - handle IPI from smp_send_stop()
@@ -473,10 +473,10 @@ static void ipi_cpu_stop(unsigned int cpu)
 {
 	if (system_state == SYSTEM_BOOTING ||
 	    system_state == SYSTEM_RUNNING) {
-		spin_lock(&stop_lock);
+		raw_spin_lock(&stop_lock);
 		printk(KERN_CRIT "CPU%u: stopping\n", cpu);
 		dump_stack();
-		spin_unlock(&stop_lock);
+		raw_spin_unlock(&stop_lock);
 	}
 
 	set_cpu_online(cpu, false);
-- 
1.7.2.3