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| author | FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> | 2009-04-14 09:43:19 +0900 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-04-15 12:22:47 +0200 |
| commit | 19c1a6f5764d787113fa323ffb18be7991208f82 (patch) | |
| tree | 97b5c7e9be546ecaf6df41fe1fbec6ec0f816a6b /lib/dma-debug.c | |
| parent | e6a1a89d572c31b62d6dcf11a371c7323852d9b2 (diff) | |
| download | kernel-common-19c1a6f5764d787113fa323ffb18be7991208f82.tar.gz kernel-common-19c1a6f5764d787113fa323ffb18be7991208f82.tar.bz2 kernel-common-19c1a6f5764d787113fa323ffb18be7991208f82.zip | |
x86 gart: reimplement IOMMU_LEAK feature by using DMA_API_DEBUG
IOMMU_LEAK, GART's own feature, dumps the used IOMMU entries when
IOMMU entries is full, which might be useful to find a bad driver that
eats IOMMU entries.
DMA_API_DEBUG provides the similar feature, debug_dma_dump_mappings,
and it's better than GART's IOMMU_LEAK feature. GART's IOMMU_LEAK
feature doesn't say who uses IOMMU entries so it's hard to find a bad
driver.
This patch reimplements the GART's IOMMU_LEAK feature by using
DMA_API_DEBUG.
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Joerg Roedel <joerg.roedel@amd.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
LKML-Reference: <1239669799-23579-2-git-send-email-fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'lib/dma-debug.c')
0 files changed, 0 insertions, 0 deletions