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Subject[PATCH 12/16] dma-debug: add checks for sync_single_*
Date
Impact: add debug callbacks for dma_sync_single_for_* functions

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
---
include/linux/dma-debug.h | 20 ++++++++++++++++++++
lib/dma-debug.c | 20 ++++++++++++++++++++
2 files changed, 40 insertions(+), 0 deletions(-)

diff --git a/include/linux/dma-debug.h b/include/linux/dma-debug.h
index a28a701..f39c2a8 100644
--- a/include/linux/dma-debug.h
+++ b/include/linux/dma-debug.h
@@ -46,6 +46,14 @@ extern void debug_alloc_coherent(struct device *dev, size_t size,
extern void debug_free_coherent(struct device *dev, size_t size,
void *virt, dma_addr_t addr);

+extern void debug_sync_single_for_cpu(struct device *dev,
+ dma_addr_t dma_handle, size_t size,
+ int direction);
+
+extern void debug_sync_single_for_device(struct device *dev,
+ dma_addr_t dma_handle,
+ size_t size, int direction);
+
#else /* CONFIG_DMA_API_DEBUG */

static inline void dma_debug_init(u32 num_entries)
@@ -84,6 +92,18 @@ static inline void debug_free_coherent(struct device *dev, size_t size,
{
}

+static inline void debug_sync_single_for_cpu(struct device *dev,
+ dma_addr_t dma_handle,
+ size_t size, int direction)
+{
+}
+
+static inline void debug_sync_single_for_device(struct device *dev,
+ dma_addr_t dma_handle,
+ size_t size, int direction)
+{
+}
+
#endif /* CONFIG_DMA_API_DEBUG */

#endif /* __DMA_DEBUG_H */
diff --git a/lib/dma-debug.c b/lib/dma-debug.c
index a4a5b0f..a7f2369 100644
--- a/lib/dma-debug.c
+++ b/lib/dma-debug.c
@@ -649,3 +649,23 @@ void debug_free_coherent(struct device *dev, size_t size,
}
EXPORT_SYMBOL(debug_free_coherent);

+void debug_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle,
+ size_t size, int direction)
+{
+ if (global_disable)
+ return;
+
+ check_sync(dev, dma_handle, size, 0, direction, true);
+}
+EXPORT_SYMBOL(debug_sync_single_for_cpu);
+
+void debug_sync_single_for_device(struct device *dev, dma_addr_t dma_handle,
+ size_t size, int direction)
+{
+ if (global_disable)
+ return;
+
+ check_sync(dev, dma_handle, size, 0, direction, false);
+}
+EXPORT_SYMBOL(debug_sync_single_for_device);
+
--
1.5.6.4



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