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locking, printk: Annotate logbuf_lock as raw

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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>
This commit is contained in:
Thomas Gleixner 2009-07-25 17:50:36 +02:00 • committed by Ingo Molnar
parent 5389f6fad2
commit 07354eb1a7
3 changed files with 28 additions and 28 deletions
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6
include/linux/ratelimit.h
View file

@ -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;