增加sysfs接口

hc

2023-08-30 862c27fc9920c83318c784bfdadf43a65df1ec8f

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SSV_DFS_FILE=/sys/kernel/debug/ssv/ssv_cmd
if [ -f $SSV_DFS_FILE ]; then
    echo "$*" > $SSV_DFS_FILE
    cat $SSV_DFS_FILE
fi