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| author | Joerg Roedel <joerg.roedel@amd.com> | 2009-03-16 17:32:14 +0100 |
|---|---|---|
| committer | Joerg Roedel <joerg.roedel@amd.com> | 2009-03-17 12:56:49 +0100 |
| commit | 41531c8f5f05aba5ec645d9770557eedbf75b422 (patch) | |
| tree | 7635e68efbee5ea7b5208e5d4b332f6ef2113dd3 /include/linux/dma-debug.h | |
| parent | 2e34bde18576a02c897ae6b699ea26301d92be1b (diff) | |
| download | lwn-41531c8f5f05aba5ec645d9770557eedbf75b422.tar.gz lwn-41531c8f5f05aba5ec645d9770557eedbf75b422.zip | |
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.h | 7 |
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) { } |