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locking, x86, iommu: Annotate qi->q_lock as raw

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The qi->q_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>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Thomas Gleixner
2011-07-19 17:02:07 +02:00
committed by Ingo Molnar
parent 96f8e98bfe
commit 3b8f404815
2 changed files with 8 additions and 8 deletions
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2
include/linux/intel-iommu.h
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@@ -271,7 +271,7 @@ struct qi_desc {
};
struct q_inval {
spinlock_t q_lock;
raw_spinlock_t q_lock;
struct qi_desc *desc; /* invalidation queue */
int *desc_status; /* desc status */
int free_head; /* first free entry */