1 files changed, 42 insertions, 0 deletions
diff --git a/rootdir/init.trace.rc b/rootdir/init.trace.rc
new file mode 100755
index 0000000..9085e3d
--- /dev/null
+++ b/rootdir/init.trace.rc
@@ -0,0 +1,42 @@
+## Permissions to allow system-wide tracing to the kernel trace buffer.
+##
+on boot
+
+# Allow writing to the kernel trace log.
+    mount debugfs debugfs /sys/kernel/debug
+    chmod 0755 /sys/kernel/debug
+    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 system 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/record-cmd
+    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
+    # change to system owner for AMS to control
+    chown system shell /sys/kernel/debug/tracing/tracing_on
+    chown system shell /sys/kernel/debug/tracing/tracing_enabled
+    chown root shell /sys/kernel/debug/tracing/set_event
+
+    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/record-cmd
+    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/tracing_on
+    chmod 0664 /sys/kernel/debug/tracing/tracing_enabled
+    chmod 0664 /sys/kernel/debug/tracing/set_event
+
+# Allow only the shell group to read and truncate the kernel trace.
+    chown system shell /sys/kernel/debug/tracing/trace
+    chmod 0664 /sys/kernel/debug/tracing/trace