platform_system_core/rootdir/init.trace.rc

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## Permissions to allow system-wide tracing to the kernel trace buffer.
##
on boot
# Allow writing to the kernel trace log.
chmod 0222 /sys/kernel/debug/tracing/trace_marker
# Allow the shell group to enable (some) kernel tracing.
chown root shell /sys/kernel/debug/tracing/trace_clock
chown root shell /sys/kernel/debug/tracing/buffer_size_kb
chown root shell /sys/kernel/debug/tracing/options/overwrite
chown root shell /sys/kernel/debug/tracing/options/print-tgid
chown root shell /sys/kernel/debug/tracing/events/sched/sched_switch/enable
chown root shell /sys/kernel/debug/tracing/events/sched/sched_wakeup/enable
chown root shell /sys/kernel/debug/tracing/events/power/cpu_frequency/enable
chown root shell /sys/kernel/debug/tracing/events/power/cpu_idle/enable
chown root shell /sys/kernel/debug/tracing/events/power/clock_set_rate/enable
chown root shell /sys/kernel/debug/tracing/events/cpufreq_interactive/enable
chown root shell /sys/kernel/debug/tracing/events/vmscan/mm_vmscan_direct_reclaim_begin/enable
chown root shell /sys/kernel/debug/tracing/events/vmscan/mm_vmscan_direct_reclaim_end/enable
chown root shell /sys/kernel/debug/tracing/events/vmscan/mm_vmscan_kswapd_wake/enable
chown root shell /sys/kernel/debug/tracing/events/vmscan/mm_vmscan_kswapd_sleep/enable
chown root shell /sys/kernel/debug/tracing/events/binder/binder_transaction/enable
chown root shell /sys/kernel/debug/tracing/events/binder/binder_transaction_received/enable
chown root shell /sys/kernel/debug/tracing/events/binder/binder_lock/enable
chown root shell /sys/kernel/debug/tracing/events/binder/binder_locked/enable
chown root shell /sys/kernel/debug/tracing/events/binder/binder_unlock/enable
chown root shell /sys/kernel/debug/tracing/tracing_on
chmod 0664 /sys/kernel/debug/tracing/trace_clock
chmod 0664 /sys/kernel/debug/tracing/buffer_size_kb
chmod 0664 /sys/kernel/debug/tracing/options/overwrite
chmod 0664 /sys/kernel/debug/tracing/options/print-tgid
chmod 0664 /sys/kernel/debug/tracing/events/sched/sched_switch/enable
chmod 0664 /sys/kernel/debug/tracing/events/sched/sched_wakeup/enable
chmod 0664 /sys/kernel/debug/tracing/events/power/cpu_frequency/enable
chmod 0664 /sys/kernel/debug/tracing/events/power/cpu_idle/enable
chmod 0664 /sys/kernel/debug/tracing/events/power/clock_set_rate/enable
chmod 0664 /sys/kernel/debug/tracing/events/cpufreq_interactive/enable
chmod 0664 /sys/kernel/debug/tracing/events/vmscan/mm_vmscan_direct_reclaim_begin/enable
chmod 0664 /sys/kernel/debug/tracing/events/vmscan/mm_vmscan_direct_reclaim_end/enable
chmod 0664 /sys/kernel/debug/tracing/events/vmscan/mm_vmscan_kswapd_wake/enable
chmod 0664 /sys/kernel/debug/tracing/events/vmscan/mm_vmscan_kswapd_sleep/enable
chmod 0664 /sys/kernel/debug/tracing/tracing_on
chmod 0664 /sys/kernel/debug/tracing/events/binder/binder_transaction/enable
chmod 0664 /sys/kernel/debug/tracing/events/binder/binder_transaction_received/enable
chmod 0664 /sys/kernel/debug/tracing/events/binder/binder_lock/enable
chmod 0664 /sys/kernel/debug/tracing/events/binder/binder_locked/enable
chmod 0664 /sys/kernel/debug/tracing/events/binder/binder_unlock/enable
# Allow only the shell group to read and truncate the kernel trace.
chown root shell /sys/kernel/debug/tracing/trace
chmod 0660 /sys/kernel/debug/tracing/trace
on property:persist.debug.atrace.boottrace=1
start boottrace
# Run atrace with the categories written in a file
service boottrace /system/bin/atrace --async_start -f /data/misc/boottrace/categories
disabled
oneshot