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authorJoerg Roedel <joerg.roedel@amd.com>2009-03-16 19:32:14 +0300
committerJoerg Roedel <joerg.roedel@amd.com>2009-03-17 14:56:49 +0300
commit41531c8f5f05aba5ec645d9770557eedbf75b422 (patch)
tree7635e68efbee5ea7b5208e5d4b332f6ef2113dd3 /include/linux/dma-debug.h
parent2e34bde18576a02c897ae6b699ea26301d92be1b (diff)
downloadlinux-41531c8f5f05aba5ec645d9770557eedbf75b422.tar.xz
dma-debug: add a check dma memory leaks
Impact: allow architectures to monitor busses for dma mem leakage This patch adds checking code to detect if a device has pending DMA operations when it is about to be unbound from its device driver. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Diffstat (limited to 'include/linux/dma-debug.h')
-rw-r--r--include/linux/dma-debug.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/dma-debug.h b/include/linux/dma-debug.h
index 46a11c10da04..e851d23e91eb 100644
--- a/include/linux/dma-debug.h
+++ b/include/linux/dma-debug.h
@@ -24,9 +24,12 @@
struct device;
struct scatterlist;
+struct bus_type;
#ifdef CONFIG_DMA_API_DEBUG
+extern void dma_debug_add_bus(struct bus_type *bus);
+
extern void dma_debug_init(u32 num_entries);
extern void debug_dma_map_page(struct device *dev, struct page *page,
@@ -80,6 +83,10 @@ extern void debug_dma_dump_mappings(struct device *dev);
#else /* CONFIG_DMA_API_DEBUG */
+void dma_debug_add_bus(struct bus_type *bus)
+{
+}
+
static inline void dma_debug_init(u32 num_entries)
{
}