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Subject[PATCH 5/5] swiotlb: EXPORT_SYMBOL_GPL functions + variables that are defined in the header file.
Date
Make the functions and variables that are now declared in the swiotlb.h
header file visible by the linker.

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
---
lib/swiotlb.c | 11 +++++++++++
1 files changed, 11 insertions(+), 0 deletions(-)
diff --git a/lib/swiotlb.c b/lib/swiotlb.c
index b3eef1c..c6bfa5d 100644
--- a/lib/swiotlb.c
+++ b/lib/swiotlb.c
@@ -57,19 +57,24 @@ int swiotlb_force;
* API.
*/
char *swiotlb_bk_start, *swiotlb_bk_end;
+EXPORT_SYMBOL_GPL(swiotlb_bk_start);
+EXPORT_SYMBOL_GPL(swiotlb_bk_end);

/*
* The number of IO TLB blocks (in groups of 64) betweeen swiotlb_bk_start and
* swiotlb_bk_end. This is command line adjustable via setup_io_tlb_npages.
*/
unsigned long swiotlb_bk_nslabs;
+EXPORT_SYMBOL_GPL(swiotlb_bk_nslabs);

/*
* When the IOMMU overflows we return a fallback buffer. This sets the size.
*/
unsigned long swiotlb_bk_overflow = 32*1024;
+EXPORT_SYMBOL_GPL(swiotlb_bk_overflow);

void *swiotlb_bk_overflow_buffer;
+EXPORT_SYMBOL_GPL(swiotlb_bk_overflow_buffer);

/*
* This is a free list describing the number of free entries available from
@@ -312,6 +317,7 @@ int is_swiotlb_buffer(phys_addr_t paddr)
return paddr >= virt_to_phys(swiotlb_bk_start) &&
paddr < virt_to_phys(swiotlb_bk_end);
}
+EXPORT_SYMBOL_GPL(is_swiotlb_buffer);

/*
* Bounce: copy the swiotlb buffer back to the original dma location
@@ -353,6 +359,7 @@ void swiotlb_bounce(phys_addr_t phys, char *dma_addr, size_t size,
memcpy(phys_to_virt(phys), dma_addr, size);
}
}
+EXPORT_SYMBOL_GPL(swiotlb_bounce);

/*
* Allocates bounce buffer and returns its kernel virtual address.
@@ -459,6 +466,7 @@ found:

return dma_addr;
}
+EXPORT_SYMBOL_GPL(swiotlb_bk_map_single);

/*
* dma_addr is the kernel virtual address of the bounce buffer to unmap.
@@ -504,6 +512,7 @@ swiotlb_bk_unmap_single(struct device *hwdev, char *dma_addr, size_t size,
}
spin_unlock_irqrestore(&swiotlb_bk_lock, flags);
}
+EXPORT_SYMBOL_GPL(swiotlb_bk_unmap_single);

void
swiotlb_bk_sync_single(struct device *hwdev, char *dma_addr, size_t size,
@@ -531,6 +540,7 @@ swiotlb_bk_sync_single(struct device *hwdev, char *dma_addr, size_t size,
BUG();
}
}
+EXPORT_SYMBOL_GPL(swiotlb_bk_sync_single);

void *
swiotlb_alloc_coherent(struct device *hwdev, size_t size,
@@ -622,6 +632,7 @@ swiotlb_full(struct device *dev, size_t size, int dir, int do_panic)
if (dir == DMA_TO_DEVICE)
panic("DMA: Random memory could be DMA read\n");
}
+EXPORT_SYMBOL_GPL(swiotlb_full);

/*
* Map a single buffer of the indicated size for DMA in streaming mode. The
--
1.6.2.5


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