diff options
| author | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2011-08-12 00:50:56 +0400 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2011-12-06 14:38:03 +0400 |
| commit | f21ffe9f6da6d3a69c518b7345c198d48d941c34 (patch) | |
| tree | 7981ef410a4960de07da4ffb6210e97b7836fca4 /lib/swiotlb.c | |
| parent | bcdd6b2fd603340fbb0ed9984b32a9a066f1b806 (diff) | |
| download | linux-f21ffe9f6da6d3a69c518b7345c198d48d941c34.tar.xz | |
swiotlb: Expose swiotlb_nr_tlb function to modules
As a mechanism to detect whether SWIOTLB is enabled or not.
We also fix the spelling - it was swioltb instead of
swiotlb.
CC: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
[v1: Ripped out swiotlb_enabled]
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Diffstat (limited to 'lib/swiotlb.c')
| -rw-r--r-- | lib/swiotlb.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/lib/swiotlb.c b/lib/swiotlb.c index 99093b396145..058935ef3975 100644 --- a/lib/swiotlb.c +++ b/lib/swiotlb.c @@ -110,11 +110,11 @@ setup_io_tlb_npages(char *str) __setup("swiotlb=", setup_io_tlb_npages); /* make io_tlb_overflow tunable too? */ -unsigned long swioltb_nr_tbl(void) +unsigned long swiotlb_nr_tbl(void) { return io_tlb_nslabs; } - +EXPORT_SYMBOL_GPL(swiotlb_nr_tbl); /* Note that this doesn't work with highmem page */ static dma_addr_t swiotlb_virt_to_bus(struct device *hwdev, volatile void *address) @@ -321,6 +321,7 @@ void __init swiotlb_free(void) free_bootmem_late(__pa(io_tlb_start), PAGE_ALIGN(io_tlb_nslabs << IO_TLB_SHIFT)); } + io_tlb_nslabs = 0; } static int is_swiotlb_buffer(phys_addr_t paddr) |