locking, printk: Annotate logbuf_lock as raw

The logbuf_lock lock 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>
[ merged and fixed it ]
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 3 insertions, 3 deletions

diff --git a/include/linux/ratelimit.h b/include/linux/ratelimit.h
index 2f007157fab9..e11ccb4cf48d 100644
--- a/include/linux/ratelimit.h
+++ b/include/linux/ratelimit.h
@@ -8,7 +8,7 @@
 #define DEFAULT_RATELIMIT_BURST         10
 
 struct ratelimit_state {
-        spinlock_t      lock;           /* protect the state */
+        raw_spinlock_t  lock;           /* protect the state */
 
         int             interval;
         int             burst;
@@ -20,7 +20,7 @@ struct ratelimit_state {
 #define DEFINE_RATELIMIT_STATE(name, interval_init, burst_init)         \
                                                                         \
         struct ratelimit_state name = {                                 \
-                .lock           = __SPIN_LOCK_UNLOCKED(name.lock),      \
+                .lock           = __RAW_SPIN_LOCK_UNLOCKED(name.lock),  \
                 .interval       = interval_init,                        \
                 .burst          = burst_init,                           \
         }
@@ -28,7 +28,7 @@ struct ratelimit_state {
 static inline void ratelimit_state_init(struct ratelimit_state *rs,
                                         int interval, int burst)
 {
-        spin_lock_init(&rs->lock);
+        raw_spin_lock_init(&rs->lock);
         rs->interval = interval;
         rs->burst = burst;
         rs->printed = 0;