diff options
Diffstat (limited to 'kernel/dma')
| -rw-r--r-- | kernel/dma/swiotlb.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/kernel/dma/swiotlb.c b/kernel/dma/swiotlb.c index af2e304c672c..775f7bb10ab1 100644 --- a/kernel/dma/swiotlb.c +++ b/kernel/dma/swiotlb.c @@ -717,6 +717,15 @@ static int swiotlb_find_slots(struct device *dev, phys_addr_t orig_addr, return -1; } +#ifdef CONFIG_DEBUG_FS + +static unsigned long mem_used(struct io_tlb_mem *mem) +{ + return atomic_long_read(&mem->total_used); +} + +#else /* !CONFIG_DEBUG_FS */ + static unsigned long mem_used(struct io_tlb_mem *mem) { int i; @@ -727,6 +736,8 @@ static unsigned long mem_used(struct io_tlb_mem *mem) return used; } +#endif /* CONFIG_DEBUG_FS */ + phys_addr_t swiotlb_tbl_map_single(struct device *dev, phys_addr_t orig_addr, size_t mapping_size, size_t alloc_size, unsigned int alloc_align_mask, enum dma_data_direction dir, |