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Commit bb52196b authored by FUJITA Tomonori's avatar FUJITA Tomonori
Browse files

swiotlb: remove unused swiotlb_alloc() 



Nobody uses swiotlb_alloc().

Signed-off-by: default avatarFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: default avatarBecky Bruce <beckyb@kernel.crashing.org>
parent 3885123d

arch/x86/kernel/pci-swiotlb.c

+0 −5
Original line number Original line Diff line number Diff line
@@ -13,11 +13,6 @@ 




int swiotlb __read_mostly;

int swiotlb __read_mostly;





void *swiotlb_alloc(unsigned order, unsigned long nslabs)

{

	return (void *)__get_free_pages(GFP_DMA | __GFP_NOWARN, order);

}



dma_addr_t swiotlb_phys_to_bus(struct device *hwdev, phys_addr_t paddr)

dma_addr_t swiotlb_phys_to_bus(struct device *hwdev, phys_addr_t paddr)

{

{

	return paddr;

	return paddr;

include/linux/swiotlb.h

+0 −2
Original line number Original line Diff line number Diff line
@@ -23,8 +23,6 @@ struct scatterlist; 
extern void

extern void

swiotlb_init(void);

swiotlb_init(void);





extern void *swiotlb_alloc(unsigned order, unsigned long nslabs);



extern dma_addr_t swiotlb_phys_to_bus(struct device *hwdev,

extern dma_addr_t swiotlb_phys_to_bus(struct device *hwdev,

				      phys_addr_t address);

				      phys_addr_t address);

extern phys_addr_t swiotlb_bus_to_phys(struct device *hwdev,

extern phys_addr_t swiotlb_bus_to_phys(struct device *hwdev,

lib/swiotlb.c

+2 −6
Original line number Original line Diff line number Diff line
@@ -114,11 +114,6 @@ setup_io_tlb_npages(char *str) 
__setup("swiotlb=", setup_io_tlb_npages);

__setup("swiotlb=", setup_io_tlb_npages);

/* make io_tlb_overflow tunable too? */

/* make io_tlb_overflow tunable too? */





void * __weak swiotlb_alloc(unsigned order, unsigned long nslabs)

{

	return (void *)__get_free_pages(GFP_DMA | __GFP_NOWARN, order);

}



dma_addr_t __weak swiotlb_phys_to_bus(struct device *hwdev, phys_addr_t paddr)

dma_addr_t __weak swiotlb_phys_to_bus(struct device *hwdev, phys_addr_t paddr)

{

{

	return paddr;

	return paddr;
@@ -240,7 +235,8 @@ swiotlb_late_init_with_default_size(size_t default_size) 
	bytes = io_tlb_nslabs << IO_TLB_SHIFT;

	bytes = io_tlb_nslabs << IO_TLB_SHIFT;





	while ((SLABS_PER_PAGE << order) > IO_TLB_MIN_SLABS) {

	while ((SLABS_PER_PAGE << order) > IO_TLB_MIN_SLABS) {

		io_tlb_start = swiotlb_alloc(order, io_tlb_nslabs);

		io_tlb_start = (void *)__get_free_pages(GFP_DMA | __GFP_NOWARN,

							order);

		if (io_tlb_start)

		if (io_tlb_start)

			break;

			break;

		order--;

		order--;