[1d97c1]: nouveau-pm / init-trace.sh  Maximize  Restore  History

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#!/bin/bash
error() {
echo "ERROR - $1"
exit 1
}
if [ $UID -ne 0 ]; then
error "The script must be run as root"
fi
# XXX: Add a check if debugfs is already mounted if it is
# - parse the information and use it
# - or unmount/mount again at the currently selected place
mount -t debugfs debugfs /sys/kernel/debug 2>/dev/null
for TRACER in `cat /sys/kernel/debug/tracing/available_tracers`
do
if test "x$TRACER" = xmmiotrace; then
echo 128000 > /sys/kernel/debug/tracing/buffer_size_kb
echo mmiotrace > /sys/kernel/debug/tracing/current_tracer
exit 0
fi
done
error "Cannot find mmiotrace in the list of available tracers"