x86: Convert nmi_lock to raw_spinlock

nmi_lock must be a spinning spinlock in -rt.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 3 insertions, 3 deletions

diff --git a/arch/x86/kernel/apic/nmi.c b/arch/x86/kernel/apic/nmi.c
index 0159a69396cb..24e7742d633a 100644
--- a/arch/x86/kernel/apic/nmi.c
+++ b/arch/x86/kernel/apic/nmi.c
@@ -416,13 +416,13 @@ nmi_watchdog_tick(struct pt_regs *regs, unsigned reason)
 
         /* We can be called before check_nmi_watchdog, hence NULL check. */
         if (cpumask_test_cpu(cpu, to_cpumask(backtrace_mask))) {
-                static DEFINE_SPINLOCK(lock);   /* Serialise the printks */
+                static DEFINE_RAW_SPINLOCK(lock); /* Serialise the printks */
 
-                spin_lock(&lock);
+                raw_spin_lock(&lock);
                 printk(KERN_WARNING "NMI backtrace for cpu %d\n", cpu);
                 show_regs(regs);
                 dump_stack();
-                spin_unlock(&lock);
+                raw_spin_unlock(&lock);
                 cpumask_clear_cpu(cpu, to_cpumask(backtrace_mask));
 
                 rc = 1;