devlib/bin/scripts/shutils.in

#!__DEVLIB_SHELL__

CMD=$1
shift

BUSYBOX=${BUSYBOX:-__DEVLIB_BUSYBOX__}
GREP=${GREP:-$BUSYBOX grep}
SED=${SED:-$BUSYBOX sed}

################################################################################
# CPUFrequency Utility Functions
################################################################################

cpufreq_set_all_frequencies() {
	FREQ=$1
	for CPU in /sys/devices/system/cpu/cpu[0-9]*; do
		echo $FREQ > $CPU/cpufreq/scaling_cur_freq
	done
}

cpufreq_get_all_frequencies() {
	$GREP '' /sys/devices/system/cpu/cpu*/cpufreq/scaling_cur_freq | \
		$SED -e 's|/sys/devices/system/cpu/cpu||' -e 's|/cpufreq/scaling_cur_freq:| |'
}

cpufreq_set_all_governors() {
	GOV=$1
	for CPU in /sys/devices/system/cpu/cpu[0-9]*; do
		echo $GOV > $CPU/cpufreq/scaling_governor
	done
}

cpufreq_get_all_governors() {
	$GREP '' /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor | \
		$SED -e 's|/sys/devices/system/cpu/cpu||' -e 's|/cpufreq/scaling_governor:| |'
}

cpufreq_trace_all_frequencies() {
	FREQS=$(cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_cur_freq)
	CPU=0; for F in $FREQS; do
		echo "cpu_frequency:        state=$F cpu_id=$CPU" > /sys/kernel/debug/tracing/trace_marker
		CPU=$((CPU + 1))
	done
}

################################################################################
# FTrace Utility Functions
################################################################################

ftrace_get_function_stats() {
    for CPU in $(ls /sys/kernel/debug/tracing/trace_stat | sed 's/function//'); do
        REPLACE_STRING="s/  Function/\n  Function (CPU$CPU)/"
        cat /sys/kernel/debug/tracing/trace_stat/function$CPU \
            | sed "$REPLACE_STRING"
    done
}

################################################################################
# Main Function Dispatcher
################################################################################

case $CMD in
cpufreq_set_all_frequencies)
    cpufreq_set_all_frequencies $*
    ;;
cpufreq_get_all_frequencies)
    cpufreq_get_all_frequencies
    ;;
cpufreq_set_all_governors)
    cpufreq_set_all_governors $*
    ;;
cpufreq_get_all_governors)
    cpufreq_get_all_governors
    ;;
cpufreq_trace_all_frequencies)
    cpufreq_trace_all_frequencies $*
    ;;
ftrace_get_function_stats)
    ftrace_get_function_stats
    ;;
*)
    echo "Command [$CMD] not supported"
    exit -1
esac

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