check-ipc-flood.sh

#!/usr/bin/env bash

##
## Case Name: ipc flood
## Preconditions:
##    N/A
## Description:
##    check sof debug ipc function can successfully work
## Case step:
##    1. write target count to ipc_flood_count
##       echo 10000 > /sys/kernel/debug/sof/ipc_flood_count
## Expect result:
##    no error in kernel log
##

set -e

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

OPT_NAME['c']='cnt'      OPT_DESC['c']='ipc loop count'
OPT_HAS_ARG['c']=1         OPT_VAL['c']=10000

OPT_NAME['f']='dfs'      OPT_DESC['f']='system dfs file'
OPT_HAS_ARG['f']=1         OPT_VAL['f']="/sys/kernel/debug/sof/ipc_flood_count"

OPT_NAME['l']='loop'     OPT_DESC['l']='loop count'
OPT_HAS_ARG['l']=1         OPT_VAL['l']=1

func_opt_parse_option "$@"

lpc_loop_cnt=${OPT_VAL['c']}
ipc_flood_dfs=${OPT_VAL['f']}
loop_cnt=${OPT_VAL['l']}

start_test

if is_ipc4; then
    skip_test 'IPC4 detected: see sof-test#1066'
fi

# See SOF_IPC_INFO_BUILD in linux/sound/soc/sof/ipc3.c:sof_ipc3_validate_fw_version()
sof-kernel-dump.sh | grep sof-audio | grep -q "Firmware debug" ||
     skip_test "CONFIG_DEBUG firmware needed for SOF_IPC_TEST_IPC_FLOOD cmd"

func_lib_check_sudo

dlogi "Check $ipc_flood_dfs"
sudo test -e "$ipc_flood_dfs" ||
  skip_test "${BASH_SOURCE[0]} need $ipc_flood_dfs to run the test case"

dlogi "Running ipc flood test!"

for i in $(seq 1 "$loop_cnt")
do
    # TODO: use journalctl to replace dmesg
    # cleanup dmesg buffer for each iteration
    sudo dmesg -c > /dev/null
    # set up timestamp for each iteration
    setup_kernel_check_point
    dlogi "===== [$i/$loop_cnt] loop Begin ====="
    dlogc "sudo bash -c 'echo $lpc_loop_cnt > $ipc_flood_dfs'"
    sudo bash -c "echo $lpc_loop_cnt > $ipc_flood_dfs"

    # check kernel log for each iteration to catch issues
    sof-kernel-log-check.sh "$KERNEL_CHECKPOINT" || die "Caught error in kernel log"
    # TODO: use journalctl to replace dmesg
    dlogi "Dumping test logs!"
    dmesg | grep "IPC Flood count" -A 2
done