locking, tracing: Annotate tracing locks as raw

The tracing locks can be taken in atomic context and therefore
cannot be preempted on -rt - annotate it.

In mainline this change documents the low level nature of
the lock - otherwise there's no functional difference. Lockdep
and Sparse checking will work as usual.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 3 insertions, 3 deletions

diff --git a/kernel/trace/trace_irqsoff.c b/kernel/trace/trace_irqsoff.c
index 667aa8cc0cfc..11186212068c 100644
--- a/kernel/trace/trace_irqsoff.c
+++ b/kernel/trace/trace_irqsoff.c
@@ -23,7 +23,7 @@ static int				tracer_enabled __read_mostly;
 
 static DEFINE_PER_CPU(int, tracing_cpu);
 
-static DEFINE_SPINLOCK(max_trace_lock);
+static DEFINE_RAW_SPINLOCK(max_trace_lock);
 
 enum {
         TRACER_IRQS_OFF         = (1 << 1),
@@ -321,7 +321,7 @@ check_critical_timing(struct trace_array *tr,
         if (!report_latency(delta))
                 goto out;
 
-        spin_lock_irqsave(&max_trace_lock, flags);
+        raw_spin_lock_irqsave(&max_trace_lock, flags);
 
         /* check if we are still the max latency */
         if (!report_latency(delta))
@@ -344,7 +344,7 @@ check_critical_timing(struct trace_array *tr,
         max_sequence++;
 
 out_unlock:
-        spin_unlock_irqrestore(&max_trace_lock, flags);
+        raw_spin_unlock_irqrestore(&max_trace_lock, flags);
 
 out:
         data->critical_sequence = max_sequence;