Merge "Update filesystem permissions in atrace.rc to give selinux control." am: bf5e6b1a99 am: 2cffba66f3
am: 0ee727d91a
Change-Id: I33cff50f908b3b7d038deb19c2745aa6dd9130d8
diff --git a/cmds/atrace/atrace.rc b/cmds/atrace/atrace.rc
index 3ea1d56..89ce1e5 100644
--- a/cmds/atrace/atrace.rc
+++ b/cmds/atrace/atrace.rc
@@ -6,141 +6,86 @@
chmod 0222 /sys/kernel/debug/tracing/trace_marker
chmod 0222 /sys/kernel/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/tracing/trace_clock
- chown root shell /sys/kernel/debug/tracing/buffer_size_kb
- chown root shell /sys/kernel/tracing/buffer_size_kb
- chown root shell /sys/kernel/debug/tracing/options/overwrite
- chown root shell /sys/kernel/tracing/options/overwrite
- chown root shell /sys/kernel/debug/tracing/options/print-tgid
- chown root shell /sys/kernel/tracing/options/print-tgid
- chown root shell /sys/kernel/debug/tracing/saved_cmdlines_size
- chown root shell /sys/kernel/tracing/saved_cmdlines_size
- chown root shell /sys/kernel/debug/tracing/events/sched/sched_switch/enable
- chown root shell /sys/kernel/tracing/events/sched/sched_switch/enable
- chown root shell /sys/kernel/debug/tracing/events/sched/sched_wakeup/enable
- chown root shell /sys/kernel/tracing/events/sched/sched_wakeup/enable
- chown root shell /sys/kernel/debug/tracing/events/sched/sched_blocked_reason/enable
- chown root shell /sys/kernel/tracing/events/sched/sched_blocked_reason/enable
- chown root shell /sys/kernel/debug/tracing/events/sched/sched_cpu_hotplug/enable
- chown root shell /sys/kernel/tracing/events/sched/sched_cpu_hotplug/enable
- chown root shell /sys/kernel/debug/tracing/events/cgroup/enable
- chown root shell /sys/kernel/tracing/events/cgroup/enable
- chown root shell /sys/kernel/debug/tracing/events/power/cpu_frequency/enable
- chown root shell /sys/kernel/tracing/events/power/cpu_frequency/enable
- chown root shell /sys/kernel/debug/tracing/events/power/cpu_idle/enable
- chown root shell /sys/kernel/tracing/events/power/cpu_idle/enable
- chown root shell /sys/kernel/debug/tracing/events/power/clock_set_rate/enable
- chown root shell /sys/kernel/tracing/events/power/clock_set_rate/enable
- chown root shell /sys/kernel/debug/tracing/events/power/cpu_frequency_limits/enable
- chown root shell /sys/kernel/tracing/events/power/cpu_frequency_limits/enable
- chown root shell /sys/kernel/debug/tracing/events/cpufreq_interactive/enable
- chown root shell /sys/kernel/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/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/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/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/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/tracing/events/binder/binder_transaction/enable
- chown root shell /sys/kernel/debug/tracing/events/binder/binder_transaction_received/enable
- chown root shell /sys/kernel/tracing/events/binder/binder_transaction_received/enable
- chown root shell /sys/kernel/debug/tracing/events/binder/binder_lock/enable
- chown root shell /sys/kernel/tracing/events/binder/binder_lock/enable
- chown root shell /sys/kernel/debug/tracing/events/binder/binder_locked/enable
- chown root shell /sys/kernel/tracing/events/binder/binder_locked/enable
- chown root shell /sys/kernel/debug/tracing/events/binder/binder_unlock/enable
- chown root shell /sys/kernel/tracing/events/binder/binder_unlock/enable
- chown root shell /sys/kernel/debug/tracing/events/lowmemorykiller/enable
- chown root shell /sys/kernel/tracing/events/lowmemorykiller/enable
+# Grant unix world read/write permissions to kernel tracepoints.
+# Access control to these files is now entirely in selinux policy.
+ chmod 0666 /sys/kernel/debug/tracing/trace_clock
+ chmod 0666 /sys/kernel/tracing/trace_clock
+ chmod 0666 /sys/kernel/debug/tracing/buffer_size_kb
+ chmod 0666 /sys/kernel/tracing/buffer_size_kb
+ chmod 0666 /sys/kernel/debug/tracing/options/overwrite
+ chmod 0666 /sys/kernel/tracing/options/overwrite
+ chmod 0666 /sys/kernel/debug/tracing/options/print-tgid
+ chmod 0666 /sys/kernel/tracing/options/print-tgid
+ chmod 0666 /sys/kernel/debug/tracing/saved_cmdlines_size
+ chmod 0666 /sys/kernel/tracing/saved_cmdlines_size
+ chmod 0666 /sys/kernel/debug/tracing/events/sched/sched_switch/enable
+ chmod 0666 /sys/kernel/tracing/events/sched/sched_switch/enable
+ chmod 0666 /sys/kernel/debug/tracing/events/sched/sched_wakeup/enable
+ chmod 0666 /sys/kernel/tracing/events/sched/sched_wakeup/enable
+ chmod 0666 /sys/kernel/debug/tracing/events/sched/sched_blocked_reason/enable
+ chmod 0666 /sys/kernel/tracing/events/sched/sched_blocked_reason/enable
+ chmod 0666 /sys/kernel/debug/tracing/events/sched/sched_cpu_hotplug/enable
+ chmod 0666 /sys/kernel/tracing/events/sched/sched_cpu_hotplug/enable
+ chmod 0666 /sys/kernel/debug/tracing/events/cgroup/enable
+ chmod 0666 /sys/kernel/tracing/events/cgroup/enable
+ chmod 0666 /sys/kernel/debug/tracing/events/power/cpu_frequency/enable
+ chmod 0666 /sys/kernel/tracing/events/power/cpu_frequency/enable
+ chmod 0666 /sys/kernel/debug/tracing/events/power/cpu_idle/enable
+ chmod 0666 /sys/kernel/tracing/events/power/cpu_idle/enable
+ chmod 0666 /sys/kernel/debug/tracing/events/power/clock_set_rate/enable
+ chmod 0666 /sys/kernel/tracing/events/power/clock_set_rate/enable
+ chmod 0666 /sys/kernel/debug/tracing/events/power/cpu_frequency_limits/enable
+ chmod 0666 /sys/kernel/tracing/events/power/cpu_frequency_limits/enable
+ chmod 0666 /sys/kernel/debug/tracing/events/cpufreq_interactive/enable
+ chmod 0666 /sys/kernel/tracing/events/cpufreq_interactive/enable
+ chmod 0666 /sys/kernel/debug/tracing/events/vmscan/mm_vmscan_direct_reclaim_begin/enable
+ chmod 0666 /sys/kernel/tracing/events/vmscan/mm_vmscan_direct_reclaim_begin/enable
+ chmod 0666 /sys/kernel/debug/tracing/events/vmscan/mm_vmscan_direct_reclaim_end/enable
+ chmod 0666 /sys/kernel/tracing/events/vmscan/mm_vmscan_direct_reclaim_end/enable
+ chmod 0666 /sys/kernel/debug/tracing/events/vmscan/mm_vmscan_kswapd_wake/enable
+ chmod 0666 /sys/kernel/tracing/events/vmscan/mm_vmscan_kswapd_wake/enable
+ chmod 0666 /sys/kernel/debug/tracing/events/vmscan/mm_vmscan_kswapd_sleep/enable
+ chmod 0666 /sys/kernel/tracing/events/vmscan/mm_vmscan_kswapd_sleep/enable
+ chmod 0666 /sys/kernel/debug/tracing/tracing_on
+ chmod 0666 /sys/kernel/tracing/tracing_on
+ chmod 0666 /sys/kernel/debug/tracing/events/binder/binder_transaction/enable
+ chmod 0666 /sys/kernel/tracing/events/binder/binder_transaction/enable
+ chmod 0666 /sys/kernel/debug/tracing/events/binder/binder_transaction_received/enable
+ chmod 0666 /sys/kernel/tracing/events/binder/binder_transaction_received/enable
+ chmod 0666 /sys/kernel/debug/tracing/events/binder/binder_lock/enable
+ chmod 0666 /sys/kernel/tracing/events/binder/binder_lock/enable
+ chmod 0666 /sys/kernel/debug/tracing/events/binder/binder_locked/enable
+ chmod 0666 /sys/kernel/tracing/events/binder/binder_locked/enable
+ chmod 0666 /sys/kernel/debug/tracing/events/binder/binder_unlock/enable
+ chmod 0666 /sys/kernel/tracing/events/binder/binder_unlock/enable
+ chmod 0666 /sys/kernel/debug/tracing/events/i2c/enable
+ chmod 0666 /sys/kernel/tracing/events/i2c/enable
+ chmod 0666 /sys/kernel/debug/tracing/events/i2c/i2c_read/enable
+ chmod 0666 /sys/kernel/tracing/events/i2c/i2c_read/enable
+ chmod 0666 /sys/kernel/debug/tracing/events/i2c/i2c_write/enable
+ chmod 0666 /sys/kernel/tracing/events/i2c/i2c_write/enable
+ chmod 0666 /sys/kernel/debug/tracing/events/i2c/i2c_result/enable
+ chmod 0666 /sys/kernel/tracing/events/i2c/i2c_result/enable
+ chmod 0666 /sys/kernel/debug/tracing/events/i2c/i2c_reply/enable
+ chmod 0666 /sys/kernel/tracing/events/i2c/i2c_reply/enable
+ chmod 0666 /sys/kernel/debug/tracing/events/i2c/smbus_read/enable
+ chmod 0666 /sys/kernel/tracing/events/i2c/smbus_read/enable
+ chmod 0666 /sys/kernel/debug/tracing/events/i2c/smbus_write/enable
+ chmod 0666 /sys/kernel/tracing/events/i2c/smbus_write/enable
+ chmod 0666 /sys/kernel/debug/tracing/events/i2c/smbus_result/enable
+ chmod 0666 /sys/kernel/tracing/events/i2c/smbus_result/enable
+ chmod 0666 /sys/kernel/debug/tracing/events/i2c/smbus_reply/enable
+ chmod 0666 /sys/kernel/tracing/events/i2c/smbus_reply/enable
+ chmod 0666 /sys/kernel/debug/tracing/events/lowmemorykiller/enable
+ chmod 0666 /sys/kernel/tracing/events/lowmemorykiller/enable
- chown root shell /sys/kernel/debug/tracing/tracing_on
- chown root shell /sys/kernel/tracing/tracing_on
-
- chmod 0664 /sys/kernel/debug/tracing/trace_clock
- chmod 0664 /sys/kernel/tracing/trace_clock
- chmod 0664 /sys/kernel/debug/tracing/buffer_size_kb
- chmod 0664 /sys/kernel/tracing/buffer_size_kb
- chmod 0664 /sys/kernel/debug/tracing/options/overwrite
- chmod 0664 /sys/kernel/tracing/options/overwrite
- chmod 0664 /sys/kernel/debug/tracing/options/print-tgid
- chmod 0664 /sys/kernel/tracing/options/print-tgid
- chmod 0664 /sys/kernel/debug/tracing/saved_cmdlines_size
- chmod 0664 /sys/kernel/tracing/saved_cmdlines_size
- chmod 0664 /sys/kernel/debug/tracing/events/sched/sched_switch/enable
- chmod 0664 /sys/kernel/tracing/events/sched/sched_switch/enable
- chmod 0664 /sys/kernel/debug/tracing/events/sched/sched_wakeup/enable
- chmod 0664 /sys/kernel/tracing/events/sched/sched_wakeup/enable
- chmod 0664 /sys/kernel/debug/tracing/events/sched/sched_blocked_reason/enable
- chmod 0664 /sys/kernel/tracing/events/sched/sched_blocked_reason/enable
- chmod 0664 /sys/kernel/debug/tracing/events/sched/sched_cpu_hotplug/enable
- chmod 0664 /sys/kernel/tracing/events/sched/sched_cpu_hotplug/enable
- chmod 0664 /sys/kernel/debug/tracing/events/cgroup/enable
- chmod 0664 /sys/kernel/tracing/events/cgroup/enable
- chmod 0664 /sys/kernel/debug/tracing/events/power/cpu_frequency/enable
- chmod 0664 /sys/kernel/tracing/events/power/cpu_frequency/enable
- chmod 0664 /sys/kernel/debug/tracing/events/power/cpu_idle/enable
- chmod 0664 /sys/kernel/tracing/events/power/cpu_idle/enable
- chmod 0664 /sys/kernel/debug/tracing/events/power/clock_set_rate/enable
- chmod 0664 /sys/kernel/tracing/events/power/clock_set_rate/enable
- chmod 0664 /sys/kernel/debug/tracing/events/power/cpu_frequency_limits/enable
- chmod 0664 /sys/kernel/tracing/events/power/cpu_frequency_limits/enable
- chmod 0664 /sys/kernel/debug/tracing/events/cpufreq_interactive/enable
- chmod 0664 /sys/kernel/tracing/events/cpufreq_interactive/enable
- chmod 0664 /sys/kernel/debug/tracing/events/vmscan/mm_vmscan_direct_reclaim_begin/enable
- chmod 0664 /sys/kernel/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/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/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/tracing/events/vmscan/mm_vmscan_kswapd_sleep/enable
- chmod 0664 /sys/kernel/debug/tracing/tracing_on
- chmod 0664 /sys/kernel/tracing/tracing_on
- chmod 0664 /sys/kernel/debug/tracing/events/binder/binder_transaction/enable
- chmod 0664 /sys/kernel/tracing/events/binder/binder_transaction/enable
- chmod 0664 /sys/kernel/debug/tracing/events/binder/binder_transaction_received/enable
- chmod 0664 /sys/kernel/tracing/events/binder/binder_transaction_received/enable
- chmod 0664 /sys/kernel/debug/tracing/events/binder/binder_lock/enable
- chmod 0664 /sys/kernel/tracing/events/binder/binder_lock/enable
- chmod 0664 /sys/kernel/debug/tracing/events/binder/binder_locked/enable
- chmod 0664 /sys/kernel/tracing/events/binder/binder_locked/enable
- chmod 0664 /sys/kernel/debug/tracing/events/binder/binder_unlock/enable
- chmod 0664 /sys/kernel/tracing/events/binder/binder_unlock/enable
- chmod 0664 /sys/kernel/debug/tracing/events/i2c/enable
- chmod 0664 /sys/kernel/tracing/events/i2c/enable
- chmod 0664 /sys/kernel/debug/tracing/events/i2c/i2c_read/enable
- chmod 0664 /sys/kernel/tracing/events/i2c/i2c_read/enable
- chmod 0664 /sys/kernel/debug/tracing/events/i2c/i2c_write/enable
- chmod 0664 /sys/kernel/tracing/events/i2c/i2c_write/enable
- chmod 0664 /sys/kernel/debug/tracing/events/i2c/i2c_result/enable
- chmod 0664 /sys/kernel/tracing/events/i2c/i2c_result/enable
- chmod 0664 /sys/kernel/debug/tracing/events/i2c/i2c_reply/enable
- chmod 0664 /sys/kernel/tracing/events/i2c/i2c_reply/enable
- chmod 0664 /sys/kernel/debug/tracing/events/i2c/smbus_read/enable
- chmod 0664 /sys/kernel/tracing/events/i2c/smbus_read/enable
- chmod 0664 /sys/kernel/debug/tracing/events/i2c/smbus_write/enable
- chmod 0664 /sys/kernel/tracing/events/i2c/smbus_write/enable
- chmod 0664 /sys/kernel/debug/tracing/events/i2c/smbus_result/enable
- chmod 0664 /sys/kernel/tracing/events/i2c/smbus_result/enable
- chmod 0664 /sys/kernel/debug/tracing/events/i2c/smbus_reply/enable
- chmod 0664 /sys/kernel/tracing/events/i2c/smbus_reply/enable
- chmod 0664 /sys/kernel/debug/tracing/events/lowmemorykiller/enable
- chmod 0664 /sys/kernel/tracing/events/lowmemorykiller/enable
-
- # Tracing disabled by default
+# Tracing disabled by default
write /sys/kernel/debug/tracing/tracing_on 0
write /sys/kernel/tracing/tracing_on 0
-# Allow only the shell group to read and truncate the kernel trace.
- chown root shell /sys/kernel/debug/tracing/trace
- chown root shell /sys/kernel/tracing/trace
- chmod 0660 /sys/kernel/debug/tracing/trace
- chmod 0660 /sys/kernel/tracing/trace
+# Read and truncate the kernel trace.
+ chmod 0666 /sys/kernel/debug/tracing/trace
+ chmod 0666 /sys/kernel/tracing/trace
on property:persist.debug.atrace.boottrace=1
start boottrace
diff --git a/cmds/atrace/atrace_userdebug.rc b/cmds/atrace/atrace_userdebug.rc
index 5fd28e2..9d632cc 100644
--- a/cmds/atrace/atrace_userdebug.rc
+++ b/cmds/atrace/atrace_userdebug.rc
@@ -1,47 +1,43 @@
## 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
-# Allow the shell group to enable kernel tracepoints:
+# Grant unix world read/write permissions to enable kernel tracepoints.
+# Access control to these files is now entirely in selinux policy.
on post-fs
- chown root shell /sys/kernel/debug/tracing/events/sync/enable
- chown root shell /sys/kernel/debug/tracing/events/workqueue/enable
- chown root shell /sys/kernel/debug/tracing/events/regulator/enable
- chown root shell /sys/kernel/debug/tracing/events/pagecache/enable
+ chmod 0666 /sys/kernel/tracing/events/sync/enable
+ chmod 0666 /sys/kernel/debug/tracing/events/sync/enable
+ 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/pagecache/enable
+ chmod 0666 /sys/kernel/debug/tracing/events/pagecache/enable
# irq
- chown root shell /sys/kernel/debug/tracing/events/irq/enable
- chown root shell /sys/kernel/debug/tracing/events/ipi/enable
+ 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
# disk
- chown root shell /sys/kernel/debug/tracing/events/f2fs/f2fs_sync_file_enter/enable
- chown root shell /sys/kernel/debug/tracing/events/f2fs/f2fs_sync_file_exit/enable
- chown root shell /sys/kernel/debug/tracing/events/f2fs/f2fs_write_begin/enable
- chown root shell /sys/kernel/debug/tracing/events/f2fs/f2fs_write_end/enable
- chown root shell /sys/kernel/debug/tracing/events/ext4/ext4_da_write_begin/enable
- chown root shell /sys/kernel/debug/tracing/events/ext4/ext4_da_write_end/enable
- chown root shell /sys/kernel/debug/tracing/events/ext4/ext4_sync_file_enter/enable
- chown root shell /sys/kernel/debug/tracing/events/ext4/ext4_sync_file_exit/enable
- chown root shell /sys/kernel/debug/tracing/events/block/block_rq_issue/enable
- chown root shell /sys/kernel/debug/tracing/events/block/block_rq_complete/enable
-
- chmod 0664 /sys/kernel/debug/tracing/events/sync/enable
- chmod 0664 /sys/kernel/debug/tracing/events/workqueue/enable
- chmod 0664 /sys/kernel/debug/tracing/events/regulator/enable
- chmod 0664 /sys/kernel/debug/tracing/events/pagecache/enable
-
- # irq
- chmod 0664 /sys/kernel/debug/tracing/events/irq/enable
- chmod 0664 /sys/kernel/debug/tracing/events/ipi/enable
-
- # disk
- chmod 0664 /sys/kernel/debug/tracing/events/f2fs/f2fs_sync_file_enter/enable
- chmod 0664 /sys/kernel/debug/tracing/events/f2fs/f2fs_sync_file_exit/enable
- chmod 0664 /sys/kernel/debug/tracing/events/f2fs/f2fs_write_begin/enable
- chmod 0664 /sys/kernel/debug/tracing/events/f2fs/f2fs_write_end/enable
- chmod 0664 /sys/kernel/debug/tracing/events/ext4/ext4_da_write_begin/enable
- chmod 0664 /sys/kernel/debug/tracing/events/ext4/ext4_da_write_end/enable
- chmod 0664 /sys/kernel/debug/tracing/events/ext4/ext4_sync_file_enter/enable
- chmod 0664 /sys/kernel/debug/tracing/events/ext4/ext4_sync_file_exit/enable
- chmod 0664 /sys/kernel/debug/tracing/events/block/block_rq_issue/enable
- chmod 0664 /sys/kernel/debug/tracing/events/block/block_rq_complete/enable
+ chmod 0666 /sys/kernel/tracing/events/f2fs/f2fs_sync_file_enter/enable
+ chmod 0666 /sys/kernel/debug/tracing/events/f2fs/f2fs_sync_file_enter/enable
+ chmod 0666 /sys/kernel/tracing/events/f2fs/f2fs_sync_file_exit/enable
+ chmod 0666 /sys/kernel/debug/tracing/events/f2fs/f2fs_sync_file_exit/enable
+ chmod 0666 /sys/kernel/tracing/events/f2fs/f2fs_write_begin/enable
+ chmod 0666 /sys/kernel/debug/tracing/events/f2fs/f2fs_write_begin/enable
+ chmod 0666 /sys/kernel/tracing/events/f2fs/f2fs_write_end/enable
+ chmod 0666 /sys/kernel/debug/tracing/events/f2fs/f2fs_write_end/enable
+ chmod 0666 /sys/kernel/tracing/events/ext4/ext4_da_write_begin/enable
+ chmod 0666 /sys/kernel/debug/tracing/events/ext4/ext4_da_write_begin/enable
+ chmod 0666 /sys/kernel/tracing/events/ext4/ext4_da_write_end/enable
+ chmod 0666 /sys/kernel/debug/tracing/events/ext4/ext4_da_write_end/enable
+ chmod 0666 /sys/kernel/tracing/events/ext4/ext4_sync_file_enter/enable
+ chmod 0666 /sys/kernel/debug/tracing/events/ext4/ext4_sync_file_enter/enable
+ chmod 0666 /sys/kernel/tracing/events/ext4/ext4_sync_file_exit/enable
+ chmod 0666 /sys/kernel/debug/tracing/events/ext4/ext4_sync_file_exit/enable
+ chmod 0666 /sys/kernel/tracing/events/block/block_rq_issue/enable
+ chmod 0666 /sys/kernel/debug/tracing/events/block/block_rq_issue/enable
+ chmod 0666 /sys/kernel/tracing/events/block/block_rq_complete/enable
+ chmod 0666 /sys/kernel/debug/tracing/events/block/block_rq_complete/enable