commit ef2a17092c8663a1167b2fd0135df7e80f82643a
author Paul Lawrence <paullawrence@google.com> Wed Jan 18 10:33:34 2017 -0800
committer Paul Lawrence <paullawrence@google.com> Fri Jan 20 23:13:59 2017 +0000
tree 3b87f75dbe2f242f02c130fd2dda7cf3062ece84
parent 952072b9da4997846e62317aad10dea24c6e515b

tracefs not debugfs

Test:   Device boots
        Can take photos
        Run "adb shell atrace -c -b 16000 -t 5 gfx" without root and check produces
        output
        Run "python systrace.py view gfx freq sched am wm dalvik
        binder_driver" from external/chromium-trace after adb root and
        check populated
Bug: 31856701
Change-Id: Ic319f8a0a3e395efa7ee8ba33a868ac55cb44fe4

private/file_contexts

diff --git a/private/file_contexts b/private/file_contexts
index 7ec8d22..ae910de 100644
--- a/private/file_contexts
+++ b/private/file_contexts
@@ -436,12 +436,12 @@
 # debugfs files
 #
 /sys/kernel/debug/mmc0(/.*)?                            u:object_r:debugfs_mmc:s0
-/sys/kernel/debug/tracing(/.*)?				u:object_r:debugfs_tracing:s0
-/sys/kernel/debug/tracing/trace_marker			u:object_r:debugfs_trace_marker:s0
-/sys/kernel/debug/tracing/instances(/.*)?		u:object_r:debugfs_tracing_instances:s0
-/sys/kernel/debug/tracing/instances/wifi/free_buffer	u:object_r:debugfs_wifi_tracing:s0
-/sys/kernel/debug/tracing/instances/wifi/trace		u:object_r:debugfs_wifi_tracing:s0
-/sys/kernel/debug/tracing/instances/wifi/tracing_on	u:object_r:debugfs_wifi_tracing:s0
+/sys/kernel(/debug)?/tracing(/.*)?			u:object_r:debugfs_tracing:s0
+/sys/kernel(/debug)?/tracing/trace_marker		u:object_r:debugfs_trace_marker:s0
+/sys/kernel(/debug)?/tracing/instances(/.*)?		u:object_r:debugfs_tracing_instances:s0
+/sys/kernel(/debug)?/tracing/instances/wifi/free_buffer	u:object_r:debugfs_wifi_tracing:s0
+/sys/kernel(/debug)?/tracing/instances/wifi/trace	u:object_r:debugfs_wifi_tracing:s0
+/sys/kernel(/debug)?/tracing/instances/wifi/tracing_on	u:object_r:debugfs_wifi_tracing:s0
 
 #############################
 # asec containers