linux-kernel - [PATCH 12/16] dma-debug: add checks for sync_single

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Message-ID: <1231517970-20288-13-git-send-email-joerg.roedel@amd.com>
Date:	Fri, 9 Jan 2009 17:19:26 +0100
From:	Joerg Roedel <joerg.roedel@....com>
To:	linux-kernel@...r.kernel.org
CC:	mingo@...hat.com, dwmw2@...radead.org,
	fujita.tomonori@....ntt.co.jp, netdev@...r.kernel.org,
	iommu@...ts.linux-foundation.org,
	Joerg Roedel <joerg.roedel@....com>
Subject: [PATCH 12/16] dma-debug: add checks for sync_single_*

Impact: add debug callbacks for dma_sync_single_for_* functions

Signed-off-by: Joerg Roedel <joerg.roedel@....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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