diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2011-07-19 17:02:07 +0200 |
|---|---|---|
| committer | Hiroshi DOYU <hdoyu@nvidia.com> | 2012-01-23 11:11:33 +0200 |
| commit | 2a20126b1754c2d4d3cd30af71b8e80280fdedea (patch) | |
| tree | 8295b74c6a8eb1ec60f91e5b2a9af501db9606f8 /include | |
| parent | 86b4d1e534467f8697ac0e1627f1e37bde5bbaf6 (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')
| -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 */ |