lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

intel-iommu: Remove superfluous iova_alloc_lock from IOVA code

Browse Source 
We only ever obtain this lock immediately before the iova_rbtree_lock,
and release it immediately after the iova_rbtree_lock. So ditch it and
just use iova_rbtree_lock.

[v2: Remove the lockdep bits this time too]
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
David Woodhouse
2009-07-08 15:23:30 +01:00
parent 147202aa77
commit 3d39cecc48
3 changed files with 4 additions and 16 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/pci/intel-iommu.c
View File

@ -1309,7 +1309,6 @@ static void iommu_detach_domain(struct dmar_domain *domain,
}
static struct iova_domain reserved_iova_list;
static struct lock_class_key reserved_alloc_key;
static struct lock_class_key reserved_rbtree_key;
static void dmar_init_reserved_ranges(void)
@ -1320,8 +1319,6 @@ static void dmar_init_reserved_ranges(void)
init_iova_domain(&reserved_iova_list, DMA_32BIT_PFN);
lockdep_set_class(&reserved_iova_list.iova_alloc_lock,
&reserved_alloc_key);
lockdep_set_class(&reserved_iova_list.iova_rbtree_lock,
&reserved_rbtree_key);