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Subject[PATCH v2 0/8] dma-debug cleanup and dynamic allocation
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Hi all,

Here's some assorted cleanup and improvements to dma-debug which grew
out of the problem that certain drivers use very large numbers of DMA
mappings, and knowing when to override "dma_debug_entries=..." and what
value to override it with can be a less-than-obvious task for users.

The main part is patches #3 and #4, wherein we make dma-debug clever
enough to allocate more entries dynamically if needed, such that the
preallocation value becomes more of a quality-of-life option than a
necessity. Patches #6 and #7 do some cruft-removal to allow patch #8
to make the allocation behaviour more efficient in general.

Patches #1, #2 and #5 are some other cleanup and handy features which
fell out of the discussion/development.

Robin.


Robin Murphy (8):
dma-debug: Use pr_fmt()
dma-debug: Expose nr_total_entries in debugfs
dma-debug: Refactor dma_debug_entry allocation
dma-debug: Dynamically expand the dma_debug_entry pool
dma-debug: Make leak-like behaviour apparent
x86/dma/amd-gart: Stop resizing dma_debug_entry pool
dma/debug: Remove dma_debug_resize_entries()
dma-debug: Batch dma_debug_entry allocation

Documentation/DMA-API.txt | 20 +-
Documentation/x86/x86_64/boot-options.txt | 5 +-
arch/x86/kernel/amd_gart_64.c | 23 ---
include/linux/dma-debug.h | 7 -
kernel/dma/debug.c | 211 ++++++++++------------
5 files changed, 107 insertions(+), 159 deletions(-)

--
2.19.1.dirty

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