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Enhanced Berkeley Packet Filter (eBPF) scripts

bpftrace must be installed to be able to use eBPF scripts:

sudo apt install bpftrace
sudo dnf install bpftrace
sudo pacman -S bpftrace
sudo emerge -a bpftrace
...

Note: the distro provided bpftrace might be old, in that case the tool can be downloaded from https://github.com/bpftrace/bpftrace/releases

ipc4-msg-trace.bt

The script will tap onto the entry of sof_ipc4_log_header() to log IPC messages. It will start logging the sent messages (including payloads) and received notification with exception of 0x1b060000 - trace update.

To use the script:

sudo ./tools/eBPF/sof-ipc4-msg-trace.bt
or
sudo bpftrace tools/eBPF/sof-ipc4-msg-trace.bt

To stop the logging, just terminate the script with CTRL+C