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brb/ftrace.sh

Created August 16, 2016 14:13
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ftrace example for kernel call graphs
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ftrace.sh
echo 0 > /sys/kernel/debug/tracing/tracing_on
echo > /sys/kernel/debug/tracing/trace
echo function_graph > /sys/kernel/debug/tracing/current_tracer
echo $KERNEL_FUNCTION > /sys/kernel/debug/tracing/set_graph_function
echo 1 > /sys/kernel/debug/tracing/tracing_on
$DO_STUFF
echo 0 > /sys/kernel/debug/tracing/tracing_on
echo > /sys/kernel/debug/tracing/set_graph_function
cat /sys/kernel/debug/tracing/trace
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