| #!/bin/bash |
| |
| set -ex |
| |
| chmod a+rwx /sys/kernel/debug |
| |
| # Make sure /sys/kernel/tracing is reasonably accessible so --enable_ftrace |
| # works. |
| chmod a+w /sys/kernel/tracing/trace_marker |
| echo 10000 > /sys/kernel/tracing/buffer_size_kb |
| chmod a+rw /sys/kernel/tracing/tracing_on |
| chmod a+rwx /sys/kernel/tracing |
| |
| # Make sure we never scale the CPUs down. |
| # This takes time to do which we don't have... |
| cat /sys/devices/system/cpu/cpufreq/policy0/scaling_max_freq > \ |
| /sys/devices/system/cpu/cpufreq/policy0/scaling_min_freq |
| cat /sys/devices/system/cpu/cpufreq/policy4/scaling_max_freq > \ |
| /sys/devices/system/cpu/cpufreq/policy4/scaling_min_freq |