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authorThomas Gleixner <tglx@linutronix.de>2011-07-19 17:02:07 +0200
committerIngo Molnar <mingo@elte.hu>2011-09-13 11:12:20 +0200
commit3b8f40481513a7b6123def5a02db4cff96ae2198 (patch)
treeb183c44200f644f5f84484aa7603924815b7adbb /include/linux/intel-iommu.h
parent96f8e98bfeba3efa82eca85343bc058f6eced888 (diff)
locking, x86, iommu: Annotate qi->q_lock as raw
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>
Diffstat (limited to 'include/linux/intel-iommu.h')
-rw-r--r--include/linux/intel-iommu.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/intel-iommu.h b/include/linux/intel-iommu.h
index 19728c462399..8b9b5d365f4e 100644
--- a/include/linux/intel-iommu.h
+++ b/include/linux/intel-iommu.h
@@ -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 */