dmatest: shared channel fixes and fatal errors option

[PATCH 0/4] dmatest: shared channel fixes and fatal errors option

Nathan Lynch via B4 Relay posted 4 patches 2 days, 6 hours ago

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drivers/dma/dmatest.c | 67 ++++++++++++++++++++++++++++++++++++++++++---------
1 file changed, 56 insertions(+), 11 deletions(-)

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[PATCH 0/4] dmatest: shared channel fixes and fatal errors option

Posted by Nathan Lynch via B4 Relay 2 days, 6 hours ago

Sending several fixes for issues in dmatest that arise when running
multiple threads per channel. I have encountered these issues while
testing the sdxi driver.

Patch 1 "Don't forcibly terminate channel in polled mode" is a resend of a
fix I sent a while back that didn't get picked up. [1]

Also included is a feature introducing a "fatal errors" parameter that
provides the option of panicking the kernel after a given number of errors
have occurred in a run.

Claude Code w/Opus 4.8 was used to investigate the problems fixed by
patches 2 and 3, and it assisted in writing the changes in patch 2-4.

[1] https://lore.kernel.org/dmaengine/20250408-dmaengine-dmatest-poll-mode-fix-v1-1-754a446a5363@amd.com/

Signed-off-by: Nathan Lynch <nathan.lynch@amd.com>
---
Nathan Lynch (4):
      dmaengine: dmatest: Don't forcibly terminate channel in polled mode
      dmaengine: dmatest: Suppress bogus failures when stopping a run
      dmaengine: dmatest: Terminate channel before freeing threads
      dmaengine: dmatest: Optionally make test errors fatal

 drivers/dma/dmatest.c | 67 ++++++++++++++++++++++++++++++++++++++++++---------
 1 file changed, 56 insertions(+), 11 deletions(-)
---
base-commit: dc59e4fea9d83f03bad6bddf3fa2e52491777482
change-id: 20260722-dmatest-fixes-and-fatal-errors-3b3653d5ac9b

Best regards,
--  
Nathan Lynch <nathan.lynch@amd.com>