dmanegine: idxd: add debugfs for event log dump

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Add debugfs entry to dump the content of the event log for debugging. The
function will dump all non-zero entries in the event log. It will note
which entries are processed and which entries are still pending processing
at the time of the dump. The entries may not always be in chronological
order due to the log is a circular buffer.

Tested-by: Tony Zhu <tony.zhu@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Co-developed-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Link: https://lore.kernel.org/r/20230407203143.2189681-6-fenghua.yu@intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

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Dave Jiang 2023-04-07 13:31:32 -07:00 • committed by Vinod Koul

parent 2f431ba908

commit 5fbe6503b5

5 changed files with 164 additions and 3 deletions

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2

drivers/dma/idxd/Makefile

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138

drivers/dma/idxd/debugfs.c

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9

drivers/dma/idxd/idxd.h

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12

drivers/dma/idxd/init.c

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6

include/uapi/linux/idxd.h

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