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| author | Jiang Liu <jiang.liu@linux.intel.com> | 2014-07-11 14:19:36 +0800 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2014-07-23 16:04:47 +0200 |
| commit | a156ef99e874f3701367cc192aa604bcf8c0a236 (patch) | |
| tree | 2a2407d0d17ce78f8ed1766127d00724b86fba11 /include/linux/iova.h | |
| parent | 162d1b10d4d38065efec690c2b05ee90dfcf170c (diff) | |
| download | linux-stable-a156ef99e874f3701367cc192aa604bcf8c0a236.tar.gz linux-stable-a156ef99e874f3701367cc192aa604bcf8c0a236.tar.bz2 linux-stable-a156ef99e874f3701367cc192aa604bcf8c0a236.zip | |
iommu/vt-d: Introduce helper function iova_size() to improve code readability
Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'include/linux/iova.h')
| -rw-r--r-- | include/linux/iova.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/iova.h b/include/linux/iova.h index 3277f4711349..19e81d5ccb6d 100644 --- a/include/linux/iova.h +++ b/include/linux/iova.h @@ -34,6 +34,11 @@ struct iova_domain { unsigned long dma_32bit_pfn; }; +static inline unsigned long iova_size(struct iova *iova) +{ + return iova->pfn_hi - iova->pfn_lo + 1; +} + struct iova *alloc_iova_mem(void); void free_iova_mem(struct iova *iova); void free_iova(struct iova_domain *iovad, unsigned long pfn); |