|  | ## Permissions to allow additional system-wide tracing to the kernel trace buffer. | 
|  | ## The default list of permissions is set in frameworks/native/cmds/atrace/atrace.rc | 
|  |  | 
|  | # Grant unix world read/write permissions to enable kernel tracepoints. | 
|  | # Access control to these files is now entirely in selinux policy. | 
|  |  | 
|  | on post-fs | 
|  | # On userdebug allow to enable any event via the generic | 
|  | # set_event interface: | 
|  | # echo sched/foo > set_event == echo 1 > events/sched/foo/enable. | 
|  | chmod 0666 /sys/kernel/tracing/set_event | 
|  | chmod 0666 /sys/kernel/debug/tracing/set_event | 
|  |  | 
|  | chmod 0666 /sys/kernel/tracing/events/workqueue/enable | 
|  | chmod 0666 /sys/kernel/debug/tracing/events/workqueue/enable | 
|  | chmod 0666 /sys/kernel/tracing/events/regulator/enable | 
|  | chmod 0666 /sys/kernel/debug/tracing/events/regulator/enable | 
|  | chmod 0666 /sys/kernel/tracing/events/filemap/enable | 
|  | chmod 0666 /sys/kernel/debug/tracing/events/filemap/enable | 
|  |  | 
|  | # irq | 
|  | chmod 0666 /sys/kernel/tracing/events/irq/enable | 
|  | chmod 0666 /sys/kernel/debug/tracing/events/irq/enable | 
|  | chmod 0666 /sys/kernel/tracing/events/ipi/enable | 
|  | chmod 0666 /sys/kernel/debug/tracing/events/ipi/enable |