zephyr: shell: add initial SOF custom commands #9174
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This was referenced May 28, 2024
lgirdwood
approved these changes
Jun 18, 2024
One of the benefits and common ways to use the Zephyr shell subsystem is definition of application specific commands. This commit adds the initial SOF custom command, "sof test_inject_sched_gap". This new command allows to inject scheduling gaps into low-latency timer scheduler execution, using the domain_block() SOF interface. Optional argument can be used to specify duration of the block in micro seconds. The intent is to stress test a SOF configuration and test how the system behaves when audio pipeline is briefly starved. Example log of what is observed when test_inkect_sched_gap is run: [ 0.052431] <inf> ll_schedule: zephyr_domain_thread_fn: ll core 0 timer avg 3674, max 4326, overruns 0 [ 0.052831] <inf> ll_schedule: zephyr_domain_thread_fn: ll core 0 timer avg 3673, max 4318, overruns 0 ~$ ~$ sof test_inject_sched_gap 12000 [ 0.052968] <inf> ll_schedule: zephyr_domain_block: Blocking LL scheduler [ 0.052973] <inf> ll_schedule: zephyr_domain_unblock: Unblocking LL scheduler [ 0.052973] <inf> host_comp: host_get_copy_bytes_normal: comp:1 0x10004 no bytes to copy, available samples: 0, free_samples: 384 [ 0.053231] <inf> ll_schedule: zephyr_domain_thread_fn: ll core 0 timer avg 4074, max 437230, overruns 1 Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
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Builds on (and contains all commits of) PRs #9133
#9133 adds the basic shell support and this PR adds SOF custom commands to the shell. Both are draft until the Zephyr side PRs are merged.