tree 640575a63c1b0c204cdbacab5f2d0bb1c4cce3d7
parent e79e745b208b3c709cc5e689e587d04a4c0fe1bb
author Yuri Nudelman <ynudelman@habana.ai> 1622964531 +0300
committer Oded Gabbay <ogabbay@kernel.org> 1630219666 +0300

habanalabs: expose state dump

To improve the user's ability to debug the case where a workload that
is part of executing training/inference of a topology is getting stuck,
we need to add a 'core dump' each time a CS times-out. The 'core dump'
shall contain all relevant Sync Manager information and corresponding
fence values.

The most recent dumps shall be accessible via debugfs, under
'state_dump' node. Reading from the node will provide the oldest dump
available. Writing an integer value X will discard X dumps, starting
with the oldest one, i.e. subsequent read will now return newer
dumps.

Signed-off-by: Yuri Nudelman <ynudelman@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>