dma-debug: teach add_dma_entry() about DMA_ATTR_SKIP_CPU_SYNC
Mapping something twice should be possible as long as, DMA_ATTR_SKIP_CPU_SYNC is passed to the strictly speaking second relevant mapping operation (that attempts to map the same thing). So, don't issue a warning if the specified condition is met in add_dma_entry(). Signed-off-by: Hamza Mahfooz <someguy@effective-light.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
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Родитель
293d92cbbd
Коммит
c2bbf9d1e9
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@ -552,7 +552,7 @@ static void active_cacheline_remove(struct dma_debug_entry *entry)
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* Wrapper function for adding an entry to the hash.
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* This function takes care of locking itself.
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*/
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static void add_dma_entry(struct dma_debug_entry *entry)
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static void add_dma_entry(struct dma_debug_entry *entry, unsigned long attrs)
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{
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struct hash_bucket *bucket;
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unsigned long flags;
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@ -566,7 +566,7 @@ static void add_dma_entry(struct dma_debug_entry *entry)
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if (rc == -ENOMEM) {
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pr_err("cacheline tracking ENOMEM, dma-debug disabled\n");
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global_disable = true;
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} else if (rc == -EEXIST) {
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} else if (rc == -EEXIST && !(attrs & DMA_ATTR_SKIP_CPU_SYNC)) {
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err_printk(entry->dev, entry,
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"cacheline tracking EEXIST, overlapping mappings aren't supported\n");
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}
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@ -1191,7 +1191,8 @@ void debug_dma_map_single(struct device *dev, const void *addr,
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EXPORT_SYMBOL(debug_dma_map_single);
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void debug_dma_map_page(struct device *dev, struct page *page, size_t offset,
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size_t size, int direction, dma_addr_t dma_addr)
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size_t size, int direction, dma_addr_t dma_addr,
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unsigned long attrs)
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{
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struct dma_debug_entry *entry;
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@ -1222,7 +1223,7 @@ void debug_dma_map_page(struct device *dev, struct page *page, size_t offset,
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check_for_illegal_area(dev, addr, size);
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}
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add_dma_entry(entry);
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add_dma_entry(entry, attrs);
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}
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void debug_dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
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@ -1280,7 +1281,8 @@ void debug_dma_unmap_page(struct device *dev, dma_addr_t addr,
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}
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void debug_dma_map_sg(struct device *dev, struct scatterlist *sg,
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int nents, int mapped_ents, int direction)
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int nents, int mapped_ents, int direction,
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unsigned long attrs)
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{
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struct dma_debug_entry *entry;
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struct scatterlist *s;
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@ -1312,7 +1314,7 @@ void debug_dma_map_sg(struct device *dev, struct scatterlist *sg,
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check_sg_segment(dev, s);
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add_dma_entry(entry);
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add_dma_entry(entry, attrs);
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}
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}
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@ -1368,7 +1370,8 @@ void debug_dma_unmap_sg(struct device *dev, struct scatterlist *sglist,
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}
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void debug_dma_alloc_coherent(struct device *dev, size_t size,
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dma_addr_t dma_addr, void *virt)
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dma_addr_t dma_addr, void *virt,
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unsigned long attrs)
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{
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struct dma_debug_entry *entry;
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@ -1398,7 +1401,7 @@ void debug_dma_alloc_coherent(struct device *dev, size_t size,
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else
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entry->pfn = page_to_pfn(virt_to_page(virt));
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add_dma_entry(entry);
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add_dma_entry(entry, attrs);
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}
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void debug_dma_free_coherent(struct device *dev, size_t size,
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@ -1429,7 +1432,8 @@ void debug_dma_free_coherent(struct device *dev, size_t size,
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}
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void debug_dma_map_resource(struct device *dev, phys_addr_t addr, size_t size,
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int direction, dma_addr_t dma_addr)
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int direction, dma_addr_t dma_addr,
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unsigned long attrs)
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{
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struct dma_debug_entry *entry;
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@ -1449,7 +1453,7 @@ void debug_dma_map_resource(struct device *dev, phys_addr_t addr, size_t size,
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entry->direction = direction;
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entry->map_err_type = MAP_ERR_NOT_CHECKED;
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add_dma_entry(entry);
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add_dma_entry(entry, attrs);
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}
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void debug_dma_unmap_resource(struct device *dev, dma_addr_t dma_addr,
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@ -11,26 +11,30 @@
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#ifdef CONFIG_DMA_API_DEBUG
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extern void debug_dma_map_page(struct device *dev, struct page *page,
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size_t offset, size_t size,
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int direction, dma_addr_t dma_addr);
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int direction, dma_addr_t dma_addr,
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unsigned long attrs);
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extern void debug_dma_unmap_page(struct device *dev, dma_addr_t addr,
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size_t size, int direction);
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extern void debug_dma_map_sg(struct device *dev, struct scatterlist *sg,
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int nents, int mapped_ents, int direction);
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int nents, int mapped_ents, int direction,
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unsigned long attrs);
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extern void debug_dma_unmap_sg(struct device *dev, struct scatterlist *sglist,
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int nelems, int dir);
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extern void debug_dma_alloc_coherent(struct device *dev, size_t size,
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dma_addr_t dma_addr, void *virt);
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dma_addr_t dma_addr, void *virt,
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unsigned long attrs);
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extern void debug_dma_free_coherent(struct device *dev, size_t size,
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void *virt, dma_addr_t addr);
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extern void debug_dma_map_resource(struct device *dev, phys_addr_t addr,
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size_t size, int direction,
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dma_addr_t dma_addr);
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dma_addr_t dma_addr,
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unsigned long attrs);
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extern void debug_dma_unmap_resource(struct device *dev, dma_addr_t dma_addr,
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size_t size, int direction);
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@ -53,7 +57,8 @@ extern void debug_dma_sync_sg_for_device(struct device *dev,
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#else /* CONFIG_DMA_API_DEBUG */
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static inline void debug_dma_map_page(struct device *dev, struct page *page,
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size_t offset, size_t size,
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int direction, dma_addr_t dma_addr)
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int direction, dma_addr_t dma_addr,
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unsigned long attrs)
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{
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}
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@ -63,7 +68,8 @@ static inline void debug_dma_unmap_page(struct device *dev, dma_addr_t addr,
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}
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static inline void debug_dma_map_sg(struct device *dev, struct scatterlist *sg,
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int nents, int mapped_ents, int direction)
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int nents, int mapped_ents, int direction,
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unsigned long attrs)
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{
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}
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@ -74,7 +80,8 @@ static inline void debug_dma_unmap_sg(struct device *dev,
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}
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static inline void debug_dma_alloc_coherent(struct device *dev, size_t size,
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dma_addr_t dma_addr, void *virt)
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dma_addr_t dma_addr, void *virt,
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unsigned long attrs)
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{
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}
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@ -85,7 +92,8 @@ static inline void debug_dma_free_coherent(struct device *dev, size_t size,
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static inline void debug_dma_map_resource(struct device *dev, phys_addr_t addr,
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size_t size, int direction,
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dma_addr_t dma_addr)
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dma_addr_t dma_addr,
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unsigned long attrs)
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{
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}
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@ -156,7 +156,7 @@ dma_addr_t dma_map_page_attrs(struct device *dev, struct page *page,
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addr = dma_direct_map_page(dev, page, offset, size, dir, attrs);
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else
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addr = ops->map_page(dev, page, offset, size, dir, attrs);
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debug_dma_map_page(dev, page, offset, size, dir, addr);
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debug_dma_map_page(dev, page, offset, size, dir, addr, attrs);
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return addr;
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}
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@ -195,7 +195,7 @@ static int __dma_map_sg_attrs(struct device *dev, struct scatterlist *sg,
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ents = ops->map_sg(dev, sg, nents, dir, attrs);
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if (ents > 0)
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debug_dma_map_sg(dev, sg, nents, ents, dir);
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debug_dma_map_sg(dev, sg, nents, ents, dir, attrs);
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else if (WARN_ON_ONCE(ents != -EINVAL && ents != -ENOMEM &&
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ents != -EIO))
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return -EIO;
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@ -305,7 +305,7 @@ dma_addr_t dma_map_resource(struct device *dev, phys_addr_t phys_addr,
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else if (ops->map_resource)
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addr = ops->map_resource(dev, phys_addr, size, dir, attrs);
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debug_dma_map_resource(dev, phys_addr, size, dir, addr);
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debug_dma_map_resource(dev, phys_addr, size, dir, addr, attrs);
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return addr;
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}
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EXPORT_SYMBOL(dma_map_resource);
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@ -510,7 +510,7 @@ void *dma_alloc_attrs(struct device *dev, size_t size, dma_addr_t *dma_handle,
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else
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return NULL;
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debug_dma_alloc_coherent(dev, size, *dma_handle, cpu_addr);
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debug_dma_alloc_coherent(dev, size, *dma_handle, cpu_addr, attrs);
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return cpu_addr;
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}
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EXPORT_SYMBOL(dma_alloc_attrs);
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@ -566,7 +566,7 @@ struct page *dma_alloc_pages(struct device *dev, size_t size,
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struct page *page = __dma_alloc_pages(dev, size, dma_handle, dir, gfp);
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if (page)
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debug_dma_map_page(dev, page, 0, size, dir, *dma_handle);
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debug_dma_map_page(dev, page, 0, size, dir, *dma_handle, 0);
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return page;
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}
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EXPORT_SYMBOL_GPL(dma_alloc_pages);
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@ -644,7 +644,7 @@ struct sg_table *dma_alloc_noncontiguous(struct device *dev, size_t size,
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if (sgt) {
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sgt->nents = 1;
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debug_dma_map_sg(dev, sgt->sgl, sgt->orig_nents, 1, dir);
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debug_dma_map_sg(dev, sgt->sgl, sgt->orig_nents, 1, dir, attrs);
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}
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return sgt;
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}
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