sparc64: Make itc_sync_lock raw

One more place where we must not be able
to be preempted or to be interrupted in RT.

Always actually disable interrupts during
synchronization cycle.

Signed-off-by: Kirill Tkhai <tkhai@yandex.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 3 deletions

diff --git a/arch/sparc/kernel/smp_64.c b/arch/sparc/kernel/smp_64.c
index 9781048161ab..745a3633ce14 100644
--- a/arch/sparc/kernel/smp_64.c
+++ b/arch/sparc/kernel/smp_64.c
@@ -149,7 +149,7 @@ void cpu_panic(void)
 #define NUM_ROUNDS      64      /* magic value */
 #define NUM_ITERS       5       /* likewise */
 
-static DEFINE_SPINLOCK(itc_sync_lock);
+static DEFINE_RAW_SPINLOCK(itc_sync_lock);
 static unsigned long go[SLAVE + 1];
 
 #define DEBUG_TICK_SYNC 0
@@ -257,7 +257,7 @@ static void smp_synchronize_one_tick(int cpu)
         go[MASTER] = 0;
         membar_safe("#StoreLoad");
 
-        spin_lock_irqsave(&itc_sync_lock, flags);
+        raw_spin_lock_irqsave(&itc_sync_lock, flags);
         {
                 for (i = 0; i < NUM_ROUNDS*NUM_ITERS; i++) {
                         while (!go[MASTER])
@@ -268,7 +268,7 @@ static void smp_synchronize_one_tick(int cpu)
                         membar_safe("#StoreLoad");
                 }
         }
-        spin_unlock_irqrestore(&itc_sync_lock, flags);
+        raw_spin_unlock_irqrestore(&itc_sync_lock, flags);
 }
 
 #if defined(CONFIG_SUN_LDOMS) && defined(CONFIG_HOTPLUG_CPU)