linux/lib/dma-debug.c, branch v2.6.30

dma-debug: remove broken dma memory leak detection for 2.6.30

2009-04-26T16:23:56Z

The feature needs some more work because the notfier which is used to check for pending allocations is called before the device drivers ->remove() function. Therefore this feature reports false positives. A real fix for this issue is to introduce a new notifier event which sent _after_ the driver has deinitialized itself. That will done for the next kernel version. [ Impact: reduce the scope of CONFIG_DMA_API_DEBUG=y checks ] Signed-off-by: Joerg Roedel Cc: iommu@lists.linux-foundation.org LKML-Reference: <1240576557-22442-1-git-send-email-joerg.roedel@amd.com> Signed-off-by: Ingo Molnar

dma-debug: fix printk formats (i386)

2009-03-30T21:28:59Z

Fix printk format warnings in dma-debug: lib/dma-debug.c:645: warning: format '%016llx' expects type 'long long unsigned int', but argument 6 has type 'dma_addr_t' lib/dma-debug.c:662: warning: format '%016llx' expects type 'long long unsigned int', but argument 6 has type 'dma_addr_t' lib/dma-debug.c:676: warning: format '%016llx' expects type 'long long unsigned int', but argument 6 has type 'dma_addr_t' lib/dma-debug.c:686: warning: format '%016llx' expects type 'long long unsigned int', but argument 6 has type 'dma_addr_t' Signed-off-by: Randy Dunlap Signed-off-by: Linus Torvalds

dma-debug: make memory range checks more consistent

2009-03-24T07:39:32Z

Impact: extend on-kernel-stack DMA debug checks to all !highmem pages We only checked dma_map_single() - extend it to dma_map_page() and dma_map_sg() as well. Also, fix dma_map_single() corner case bug: make sure we dont stack-check highmem (not mapped) pages. Reported-by: FUJITA Tomonori Signed-off-by: Joerg Roedel Cc: iommu@lists.linux-foundation.org LKML-Reference: <1237818908-26516-1-git-send-email-joerg.roedel@amd.com> Signed-off-by: Ingo Molnar

dma-debug: warn of unmapping an invalid dma address

2009-03-19T07:39:48Z

Impact: extend DMA-debug checks Calling dma_unmap families against an invalid dma address should be a bug. Signed-off-by: FUJITA Tomonori Cc: Joerg Roedel LKML-Reference: <20090319103743N.fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Ingo Molnar

dma-debug: add a check dma memory leaks

2009-03-17T11:56:49Z

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

dma-debug: add checks for kernel text and rodata

2009-03-17T11:56:48Z

Impact: get notified if a device dma maps illegal areas This patch adds a check to print a warning message when a device driver tries to map a memory area from the kernel text segment or rodata. Signed-off-by: Joerg Roedel

dma-debug: print stacktrace of mapping path on unmap error

2009-03-17T11:56:48Z

Impact: saves stacktrace of a dma mapping and prints it if there is an error Signed-off-by: David Woodhouse Signed-off-by: Joerg Roedel

dma-debug: add function to dump dma mappings

2009-03-17T11:56:39Z

This adds a function to dump the DMA mappings that the debugging code is aware of -- either for a single device, or for _all_ devices. This can be useful for debugging -- sticking a call to it in the DMA page fault handler, for example, to see if the faulting address _should_ be mapped or not, and hence work out whether it's IOMMU bugs we're seeing, or driver bugs. Signed-off-by: David Woodhouse

dma-debug: add checks for sync_single_sg_*

2009-03-05T19:35:21Z

Impact: add debug callbacks for dma_sync_sg_* functions Signed-off-by: Joerg Roedel

dma-debug: add checks for sync_single_range_*

2009-03-05T19:35:21Z

Impact: add debug callbacks for dma_sync_single_range_for_* functions Signed-off-by: Joerg Roedel