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[DO NOT MERGE] collect ftrace on sof_io_read #942

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[DO NOT MERGE] collect ftrace on sof_io_read #942

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29 changes: 29 additions & 0 deletions test-case/sof_io_read-ftrace.sh
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Original file line number Diff line number Diff line change
@@ -0,0 +1,29 @@
#!/bin/bash
set -e

# Uses the function graph tracer to collect execution details for sof_io_read

main() {
# Temporary, this puts logs in the dir of the hijacked script
BASH_ARGV0=test-speaker.sh
# shellcheck source=case-lib/lib.sh
source "$(dirname "${BASH_SOURCE[0]}")"/../case-lib/lib.sh

# Clear existing trace logs
sudo bash -c "'echo > /sys/kernel/debug/tracing/trace'"
# Setup tracing
sudo bash -c "'echo > /sys/kernel/debug/tracing/set_ftrace_filter'"
sudo bash -c "'echo sof_io_read > /sys/kernel/debug/tracing/set_graph_function'"
sudo bash -c "'echo function_graph > /sys/kernel/debug/tracing/current_tracer'"
sudo bash -c "'echo 1 > /sys/kernel/debug/tracing/tracing_on'"
# Trigger `sof_io_read`s
aplay -Dhw:0,0 -c2 -r48000 -c2 -fS16_LE -d 5 /dev/urandom
# Save trace
sudo cat /sys/kernel/debug/tracing/trace > "$LOG_ROOT/trace.txt"
# Clear tracing config
sudo bash -c "'echo > /sys/kernel/debug/tracing/current_tracer'"
sudo bash -c "'echo > /sys/kernel/debug/tracing/set_graph_function'"
sudo bash -c "'echo 0 > /sys/kernel/debug/tracing/tracing_on'"
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@marc-hb marc-hb Jul 22, 2022

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Put all the /sys/kernel/debug configs in a separate file and run it all with sudo.

}

main
3 changes: 3 additions & 0 deletions test-case/test-speaker.sh
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Expand Up @@ -15,6 +15,9 @@
## hear "front left" from the front left speaker.
##

# Hijacking temporarily to get new test to run on CI
exec $(dirname ${BASH_SOURCE[0]})/sof_io_read-ftrace.sh

source $(dirname ${BASH_SOURCE[0]})/../case-lib/lib.sh

OPT_NAME['t']='tplg' OPT_DESC['t']='tplg file, default value is env TPLG: $TPLG'
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