platform: disable system agent on Zephyr builds #5557
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The system agent is not required with SOF Zephyr builds as the Zephyr ll scheduler implementation can track DSP load and print periodic status of the load and any observed overruns in scheduling. Disabling agent is beneficial as agent can create a lot of DMA traffic when DMA trace is enabled. This happens if there is jitter in agent execution, with delta slightly over the warning threshold. This can itself worsen the scheduling variation and lead to actual problems. BugLink: #5556 Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
kv2019i
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dbaluta,
lbetlej,
lgirdwood,
mmaka1 and
plbossart
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dbaluta
approved these changes
Mar 16, 2022
dbaluta
reviewed
Mar 16, 2022
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Author
|
It seems @lyakh sent a similar patch to Zephyr zephyrproject-rtos/zephyr#43410 Thoughts on which is the less confusing option? |
Collaborator
|
zephyrproject-rtos/zephyr#43410 has been merged, so this shouldn't be needed now |
Collaborator
Author
|
Let's disable in the Zephyr and make matching update to the new overlay once it is merged. |
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The system agent is not required with SOF Zephyr builds
as the Zephyr ll scheduler implementation can track DSP
load and print periodic status of the load and any observed
overruns in scheduling.
Disabling agent is beneficial as agent can create a lot of DMA traffic
when DMA trace is enabled. This happens if there is jitter in agent
execution, with delta slightly over the warning threshold. This can
itself worsen the scheduling variation and lead to actual problems.
BugLink: #5556
Signed-off-by: Kai Vehmanen kai.vehmanen@linux.intel.com