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| author | Thomas Gleixner <tglx@linutronix.de> | 2011-07-19 17:02:07 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2011-09-13 11:12:20 +0200 |
| commit | 3b8f40481513a7b6123def5a02db4cff96ae2198 (patch) | |
| tree | b183c44200f644f5f84484aa7603924815b7adbb /include/linux/intel-iommu.h | |
| parent | 96f8e98bfeba3efa82eca85343bc058f6eced888 (diff) | |
| download | lwn-3b8f40481513a7b6123def5a02db4cff96ae2198.tar.gz lwn-3b8f40481513a7b6123def5a02db4cff96ae2198.zip | |
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.h | 2 |
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 */ |