1## Permissions to allow system-wide tracing to the kernel trace buffer.
2##
3on boot
4
5# Allow writing to the kernel trace log.
6    chmod 0222 /sys/kernel/debug/tracing/trace_marker
7
8# Allow the shell group to enable (some) kernel tracing.
9    chown root shell /sys/kernel/debug/tracing/trace_clock
10    chown root shell /sys/kernel/debug/tracing/buffer_size_kb
11    chown root shell /sys/kernel/debug/tracing/options/overwrite
12    chown root shell /sys/kernel/debug/tracing/options/print-tgid
13    chown root shell /sys/kernel/debug/tracing/events/sched/sched_switch/enable
14    chown root shell /sys/kernel/debug/tracing/events/sched/sched_wakeup/enable
15    chown root shell /sys/kernel/debug/tracing/events/sched/sched_blocked_reason/enable
16    chown root shell /sys/kernel/debug/tracing/events/sched/sched_cpu_hotplug/enable
17    chown root shell /sys/kernel/debug/tracing/events/power/cpu_frequency/enable
18    chown root shell /sys/kernel/debug/tracing/events/power/cpu_idle/enable
19    chown root shell /sys/kernel/debug/tracing/events/power/clock_set_rate/enable
20    chown root shell /sys/kernel/debug/tracing/events/power/cpu_frequency_limits/enable
21    chown root shell /sys/kernel/debug/tracing/events/cpufreq_interactive/enable
22    chown root shell /sys/kernel/debug/tracing/events/vmscan/mm_vmscan_direct_reclaim_begin/enable
23    chown root shell /sys/kernel/debug/tracing/events/vmscan/mm_vmscan_direct_reclaim_end/enable
24    chown root shell /sys/kernel/debug/tracing/events/vmscan/mm_vmscan_kswapd_wake/enable
25    chown root shell /sys/kernel/debug/tracing/events/vmscan/mm_vmscan_kswapd_sleep/enable
26    chown root shell /sys/kernel/debug/tracing/events/binder/binder_transaction/enable
27    chown root shell /sys/kernel/debug/tracing/events/binder/binder_transaction_received/enable
28    chown root shell /sys/kernel/debug/tracing/events/binder/binder_lock/enable
29    chown root shell /sys/kernel/debug/tracing/events/binder/binder_locked/enable
30    chown root shell /sys/kernel/debug/tracing/events/binder/binder_unlock/enable
31
32    chown root shell /sys/kernel/debug/tracing/tracing_on
33
34    chmod 0664 /sys/kernel/debug/tracing/trace_clock
35    chmod 0664 /sys/kernel/debug/tracing/buffer_size_kb
36    chmod 0664 /sys/kernel/debug/tracing/options/overwrite
37    chmod 0664 /sys/kernel/debug/tracing/options/print-tgid
38    chmod 0664 /sys/kernel/debug/tracing/events/sched/sched_switch/enable
39    chmod 0664 /sys/kernel/debug/tracing/events/sched/sched_wakeup/enable
40    chmod 0664 /sys/kernel/debug/tracing/events/sched/sched_blocked_reason/enable
41    chmod 0664 /sys/kernel/debug/tracing/events/sched/sched_cpu_hotplug/enable
42    chmod 0664 /sys/kernel/debug/tracing/events/power/cpu_frequency/enable
43    chmod 0664 /sys/kernel/debug/tracing/events/power/cpu_idle/enable
44    chmod 0664 /sys/kernel/debug/tracing/events/power/clock_set_rate/enable
45    chmod 0664 /sys/kernel/debug/tracing/events/power/cpu_frequency_limits/enable
46    chmod 0664 /sys/kernel/debug/tracing/events/cpufreq_interactive/enable
47    chmod 0664 /sys/kernel/debug/tracing/events/vmscan/mm_vmscan_direct_reclaim_begin/enable
48    chmod 0664 /sys/kernel/debug/tracing/events/vmscan/mm_vmscan_direct_reclaim_end/enable
49    chmod 0664 /sys/kernel/debug/tracing/events/vmscan/mm_vmscan_kswapd_wake/enable
50    chmod 0664 /sys/kernel/debug/tracing/events/vmscan/mm_vmscan_kswapd_sleep/enable
51    chmod 0664 /sys/kernel/debug/tracing/tracing_on
52    chmod 0664 /sys/kernel/debug/tracing/events/binder/binder_transaction/enable
53    chmod 0664 /sys/kernel/debug/tracing/events/binder/binder_transaction_received/enable
54    chmod 0664 /sys/kernel/debug/tracing/events/binder/binder_lock/enable
55    chmod 0664 /sys/kernel/debug/tracing/events/binder/binder_locked/enable
56    chmod 0664 /sys/kernel/debug/tracing/events/binder/binder_unlock/enable
57
58    # Tracing disabled by default
59    write /sys/kernel/debug/tracing/tracing_on 0
60
61# Allow only the shell group to read and truncate the kernel trace.
62    chown root shell /sys/kernel/debug/tracing/trace
63    chmod 0660 /sys/kernel/debug/tracing/trace
64
65on property:persist.debug.atrace.boottrace=1
66    start boottrace
67
68# Run atrace with the categories written in a file
69service boottrace /system/bin/atrace --async_start -f /data/misc/boottrace/categories
70    disabled
71    oneshot
72