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Signed-off-by: Tan En De Reviewed-by: Marcelo Tosatti Signed-off-by: John Kacur --- src/queuelat/determine_maximum_mpps.sh | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/src/queuelat/determine_maximum_mpps.sh b/src/queuelat/determine_maximum_mpps.sh index 733b6b2..adfd809 100755 --- a/src/queuelat/determine_maximum_mpps.sh +++ b/src/queuelat/determine_maximum_mpps.sh @@ -42,7 +42,15 @@ usage() get_cpuinfo_mhz() { - grep "cpu MHz" /proc/cpuinfo | cut -f 3 -d " " | sort -rn | head -n1 + # Try to determine MHz from /proc/cpuinfo + FREQ_MHZ=$(grep "cpu MHz" /proc/cpuinfo | cut -f 3 -d " " | sort -rn | head -n1) + + # Try to determine MHz from /sys/firmware/devicetree/base/cpus/timebase-frequency + if [ -z $FREQ_MHZ ]; then + FREQ_MHZ=$(($((16#$(hexdump -e '1/1 "%02X"' /sys/firmware/devicetree/base/cpus/timebase-frequency)))/1000000)) + fi + + echo "$FREQ_MHZ" } # Check that the scheduling policy hasn't already been set