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authorYabin Cui <yabinc@google.com>2021-12-06 23:17:33 +0000
committerAutomerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>2021-12-06 23:17:33 +0000
commit5c1363140253f90b21a9eba613d688ec1fb96b27 (patch)
tree2ccdf935c0674b7e995b91bea4357fe67b1f3cbe
parent191788d96f6a34df8082e2a9a958864bae277f64 (diff)
parent3f2d39aee11f7549db9de4bdabde4d95ee676463 (diff)
downloadnative-5c1363140253f90b21a9eba613d688ec1fb96b27.tar.gz
Merge "atrace.rc: keep tracepoint directories world readable/executable." am: 3f2d39aee1
Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/1912034 Change-Id: Ie65a084546658d263da71f2804e475db696f0f96
-rw-r--r--cmds/atrace/atrace.rc278
1 files changed, 278 insertions, 0 deletions
diff --git a/cmds/atrace/atrace.rc b/cmds/atrace/atrace.rc
index 34ccb21c1e..97ccda4338 100644
--- a/cmds/atrace/atrace.rc
+++ b/cmds/atrace/atrace.rc
@@ -11,6 +11,284 @@ on late-init
# Grant unix world read/write permissions to kernel tracepoints.
# Access control to these files is now entirely in selinux policy.
+ chmod 0755 /sys/kernel/debug/tracing/events
+ chmod 0755 /sys/kernel/debug/tracing/events/binder
+ chmod 0755 /sys/kernel/debug/tracing/events/binder/binder_lock
+ chmod 0755 /sys/kernel/debug/tracing/events/binder/binder_locked
+ chmod 0755 /sys/kernel/debug/tracing/events/binder/binder_set_priority
+ chmod 0755 /sys/kernel/debug/tracing/events/binder/binder_transaction
+ chmod 0755 /sys/kernel/debug/tracing/events/binder/binder_transaction_alloc_buf
+ chmod 0755 /sys/kernel/debug/tracing/events/binder/binder_transaction_received
+ chmod 0755 /sys/kernel/debug/tracing/events/binder/binder_unlock
+ chmod 0755 /sys/kernel/debug/tracing/events/block
+ chmod 0755 /sys/kernel/debug/tracing/events/block/block_rq_complete
+ chmod 0755 /sys/kernel/debug/tracing/events/block/block_rq_issue
+ chmod 0755 /sys/kernel/debug/tracing/events/cgroup
+ chmod 0755 /sys/kernel/debug/tracing/events/clk
+ chmod 0755 /sys/kernel/debug/tracing/events/clk/clk_disable
+ chmod 0755 /sys/kernel/debug/tracing/events/clk/clk_enable
+ chmod 0755 /sys/kernel/debug/tracing/events/clk/clk_set_rate
+ chmod 0755 /sys/kernel/debug/tracing/events/cpufreq_interactive
+ chmod 0755 /sys/kernel/debug/tracing/events/cpuhp
+ chmod 0755 /sys/kernel/debug/tracing/events/cpuhp/cpuhp_enter
+ chmod 0755 /sys/kernel/debug/tracing/events/cpuhp/cpuhp_exit
+ chmod 0755 /sys/kernel/debug/tracing/events/cpuhp/cpuhp_pause
+ chmod 0755 /sys/kernel/debug/tracing/events/dma_fence
+ chmod 0755 /sys/kernel/debug/tracing/events/ext4
+ chmod 0755 /sys/kernel/debug/tracing/events/ext4/ext4_da_write_begin
+ chmod 0755 /sys/kernel/debug/tracing/events/ext4/ext4_da_write_end
+ chmod 0755 /sys/kernel/debug/tracing/events/ext4/ext4_es_lookup_extent_enter
+ chmod 0755 /sys/kernel/debug/tracing/events/ext4/ext4_es_lookup_extent_exit
+ chmod 0755 /sys/kernel/debug/tracing/events/ext4/ext4_load_inode
+ chmod 0755 /sys/kernel/debug/tracing/events/ext4/ext4_sync_file_enter
+ chmod 0755 /sys/kernel/debug/tracing/events/ext4/ext4_sync_file_exit
+ chmod 0755 /sys/kernel/debug/tracing/events/f2fs
+ chmod 0755 /sys/kernel/debug/tracing/events/f2fs/f2fs_get_data_block
+ chmod 0755 /sys/kernel/debug/tracing/events/f2fs/f2fs_iget
+ chmod 0755 /sys/kernel/debug/tracing/events/f2fs/f2fs_sync_file_enter
+ chmod 0755 /sys/kernel/debug/tracing/events/f2fs/f2fs_sync_file_exit
+ chmod 0755 /sys/kernel/debug/tracing/events/f2fs/f2fs_write_begin
+ chmod 0755 /sys/kernel/debug/tracing/events/f2fs/f2fs_write_end
+ chmod 0755 /sys/kernel/debug/tracing/events/fence
+ chmod 0755 /sys/kernel/debug/tracing/events/filemap
+ chmod 0755 /sys/kernel/debug/tracing/events/filemap/mm_filemap_add_to_page_cache
+ chmod 0755 /sys/kernel/debug/tracing/events/filemap/mm_filemap_delete_from_page_cache
+ chmod 0755 /sys/kernel/debug/tracing/events/gpu_mem
+ chmod 0755 /sys/kernel/debug/tracing/events/gpu_mem/gpu_mem_total
+ chmod 0755 /sys/kernel/debug/tracing/events/i2c
+ chmod 0755 /sys/kernel/debug/tracing/events/i2c/i2c_read
+ chmod 0755 /sys/kernel/debug/tracing/events/i2c/i2c_reply
+ chmod 0755 /sys/kernel/debug/tracing/events/i2c/i2c_result
+ chmod 0755 /sys/kernel/debug/tracing/events/i2c/i2c_write
+ chmod 0755 /sys/kernel/debug/tracing/events/i2c/smbus_read
+ chmod 0755 /sys/kernel/debug/tracing/events/i2c/smbus_reply
+ chmod 0755 /sys/kernel/debug/tracing/events/i2c/smbus_result
+ chmod 0755 /sys/kernel/debug/tracing/events/i2c/smbus_write
+ chmod 0755 /sys/kernel/debug/tracing/events/ion
+ chmod 0755 /sys/kernel/debug/tracing/events/ion/ion_stat
+ chmod 0755 /sys/kernel/debug/tracing/events/ipi
+ chmod 0755 /sys/kernel/debug/tracing/events/ipi/ipi_entry
+ chmod 0755 /sys/kernel/debug/tracing/events/ipi/ipi_exit
+ chmod 0755 /sys/kernel/debug/tracing/events/ipi/ipi_raise
+ chmod 0755 /sys/kernel/debug/tracing/events/irq
+ chmod 0755 /sys/kernel/debug/tracing/events/irq/irq_handler_entry
+ chmod 0755 /sys/kernel/debug/tracing/events/irq/irq_handler_exit
+ chmod 0755 /sys/kernel/debug/tracing/events/irq/softirq_entry
+ chmod 0755 /sys/kernel/debug/tracing/events/irq/softirq_exit
+ chmod 0755 /sys/kernel/debug/tracing/events/irq/softirq_raise
+ chmod 0755 /sys/kernel/debug/tracing/events/irq/tasklet_entry
+ chmod 0755 /sys/kernel/debug/tracing/events/irq/tasklet_exit
+ chmod 0755 /sys/kernel/debug/tracing/events/irq/tasklet_hi_entry
+ chmod 0755 /sys/kernel/debug/tracing/events/irq/tasklet_hi_exit
+ chmod 0755 /sys/kernel/debug/tracing/events/kmem
+ chmod 0755 /sys/kernel/debug/tracing/events/kmem/ion_heap_grow
+ chmod 0755 /sys/kernel/debug/tracing/events/kmem/ion_heap_shrink
+ chmod 0755 /sys/kernel/debug/tracing/events/kmem/rss_stat
+ chmod 0755 /sys/kernel/debug/tracing/events/lowmemorykiller
+ chmod 0755 /sys/kernel/debug/tracing/events/lowmemorykiller/lowmemory_kill
+ chmod 0755 /sys/kernel/debug/tracing/events/mm_event
+ chmod 0755 /sys/kernel/debug/tracing/events/mm_event/mm_event_record
+ chmod 0755 /sys/kernel/debug/tracing/events/oom
+ chmod 0755 /sys/kernel/debug/tracing/events/oom/mark_victim
+ chmod 0755 /sys/kernel/debug/tracing/events/oom/oom_score_adj_update
+ chmod 0755 /sys/kernel/debug/tracing/events/power
+ chmod 0755 /sys/kernel/debug/tracing/events/power/clock_disable
+ chmod 0755 /sys/kernel/debug/tracing/events/power/clock_enable
+ chmod 0755 /sys/kernel/debug/tracing/events/power/clock_set_rate
+ chmod 0755 /sys/kernel/debug/tracing/events/power/cpu_frequency
+ chmod 0755 /sys/kernel/debug/tracing/events/power/cpu_frequency_limits
+ chmod 0755 /sys/kernel/debug/tracing/events/power/cpu_idle
+ chmod 0755 /sys/kernel/debug/tracing/events/power/gpu_frequency
+ chmod 0755 /sys/kernel/debug/tracing/events/power/suspend_resume
+ chmod 0755 /sys/kernel/debug/tracing/events/sched
+ chmod 0755 /sys/kernel/debug/tracing/events/sched/sched_blocked_reason
+ chmod 0755 /sys/kernel/debug/tracing/events/sched/sched_cpu_hotplug
+ chmod 0755 /sys/kernel/debug/tracing/events/sched/sched_pi_setprio
+ chmod 0755 /sys/kernel/debug/tracing/events/sched/sched_process_exit
+ chmod 0755 /sys/kernel/debug/tracing/events/sched/sched_switch
+ chmod 0755 /sys/kernel/debug/tracing/events/sched/sched_wakeup
+ chmod 0755 /sys/kernel/debug/tracing/events/sched/sched_wakeup_new
+ chmod 0755 /sys/kernel/debug/tracing/events/sched/sched_waking
+ chmod 0755 /sys/kernel/debug/tracing/events/signal
+ chmod 0755 /sys/kernel/debug/tracing/events/signal/signal_deliver
+ chmod 0755 /sys/kernel/debug/tracing/events/signal/signal_generate
+ chmod 0755 /sys/kernel/debug/tracing/events/sync
+ chmod 0755 /sys/kernel/debug/tracing/events/task
+ chmod 0755 /sys/kernel/debug/tracing/events/task/task_newtask
+ chmod 0755 /sys/kernel/debug/tracing/events/task/task_rename
+ chmod 0755 /sys/kernel/debug/tracing/events/thermal
+ chmod 0755 /sys/kernel/debug/tracing/events/thermal/cdev_update
+ chmod 0755 /sys/kernel/debug/tracing/events/thermal/thermal_temperature
+ chmod 0755 /sys/kernel/debug/tracing/events/vmscan
+ chmod 0755 /sys/kernel/debug/tracing/events/vmscan/mm_vmscan_direct_reclaim_begin
+ chmod 0755 /sys/kernel/debug/tracing/events/vmscan/mm_vmscan_direct_reclaim_end
+ chmod 0755 /sys/kernel/debug/tracing/events/vmscan/mm_vmscan_kswapd_sleep
+ chmod 0755 /sys/kernel/debug/tracing/events/vmscan/mm_vmscan_kswapd_wake
+ chmod 0755 /sys/kernel/debug/tracing/options
+ chmod 0755 /sys/kernel/debug/tracing/per_cpu
+ chmod 0755 /sys/kernel/debug/tracing/per_cpu/cpu0
+ chmod 0755 /sys/kernel/debug/tracing/per_cpu/cpu1
+ chmod 0755 /sys/kernel/debug/tracing/per_cpu/cpu2
+ chmod 0755 /sys/kernel/debug/tracing/per_cpu/cpu3
+ chmod 0755 /sys/kernel/debug/tracing/per_cpu/cpu4
+ chmod 0755 /sys/kernel/debug/tracing/per_cpu/cpu5
+ chmod 0755 /sys/kernel/debug/tracing/per_cpu/cpu6
+ chmod 0755 /sys/kernel/debug/tracing/per_cpu/cpu7
+ chmod 0755 /sys/kernel/debug/tracing/per_cpu/cpu8
+ chmod 0755 /sys/kernel/debug/tracing/per_cpu/cpu9
+ chmod 0755 /sys/kernel/debug/tracing/per_cpu/cpu10
+ chmod 0755 /sys/kernel/debug/tracing/per_cpu/cpu11
+ chmod 0755 /sys/kernel/debug/tracing/per_cpu/cpu12
+ chmod 0755 /sys/kernel/debug/tracing/per_cpu/cpu13
+ chmod 0755 /sys/kernel/debug/tracing/per_cpu/cpu14
+ chmod 0755 /sys/kernel/debug/tracing/per_cpu/cpu15
+ chmod 0755 /sys/kernel/debug/tracing/per_cpu/cpu16
+ chmod 0755 /sys/kernel/debug/tracing/per_cpu/cpu17
+ chmod 0755 /sys/kernel/debug/tracing/per_cpu/cpu18
+ chmod 0755 /sys/kernel/debug/tracing/per_cpu/cpu19
+ chmod 0755 /sys/kernel/debug/tracing/per_cpu/cpu20
+ chmod 0755 /sys/kernel/debug/tracing/per_cpu/cpu21
+ chmod 0755 /sys/kernel/debug/tracing/per_cpu/cpu22
+ chmod 0755 /sys/kernel/debug/tracing/per_cpu/cpu23
+ chmod 0755 /sys/kernel/tracing/events
+ chmod 0755 /sys/kernel/tracing/events/binder
+ chmod 0755 /sys/kernel/tracing/events/binder/binder_lock
+ chmod 0755 /sys/kernel/tracing/events/binder/binder_locked
+ chmod 0755 /sys/kernel/tracing/events/binder/binder_set_priority
+ chmod 0755 /sys/kernel/tracing/events/binder/binder_transaction
+ chmod 0755 /sys/kernel/tracing/events/binder/binder_transaction_alloc_buf
+ chmod 0755 /sys/kernel/tracing/events/binder/binder_transaction_received
+ chmod 0755 /sys/kernel/tracing/events/binder/binder_unlock
+ chmod 0755 /sys/kernel/tracing/events/block
+ chmod 0755 /sys/kernel/tracing/events/block/block_rq_complete
+ chmod 0755 /sys/kernel/tracing/events/block/block_rq_issue
+ chmod 0755 /sys/kernel/tracing/events/cgroup
+ chmod 0755 /sys/kernel/tracing/events/clk
+ chmod 0755 /sys/kernel/tracing/events/clk/clk_disable
+ chmod 0755 /sys/kernel/tracing/events/clk/clk_enable
+ chmod 0755 /sys/kernel/tracing/events/clk/clk_set_rate
+ chmod 0755 /sys/kernel/tracing/events/cpufreq_interactive
+ chmod 0755 /sys/kernel/tracing/events/cpuhp
+ chmod 0755 /sys/kernel/tracing/events/cpuhp/cpuhp_enter
+ chmod 0755 /sys/kernel/tracing/events/cpuhp/cpuhp_exit
+ chmod 0755 /sys/kernel/tracing/events/cpuhp/cpuhp_pause
+ chmod 0755 /sys/kernel/tracing/events/dma_fence
+ chmod 0755 /sys/kernel/tracing/events/ext4
+ chmod 0755 /sys/kernel/tracing/events/ext4/ext4_da_write_begin
+ chmod 0755 /sys/kernel/tracing/events/ext4/ext4_da_write_end
+ chmod 0755 /sys/kernel/tracing/events/ext4/ext4_es_lookup_extent_enter
+ chmod 0755 /sys/kernel/tracing/events/ext4/ext4_es_lookup_extent_exit
+ chmod 0755 /sys/kernel/tracing/events/ext4/ext4_load_inode
+ chmod 0755 /sys/kernel/tracing/events/ext4/ext4_sync_file_enter
+ chmod 0755 /sys/kernel/tracing/events/ext4/ext4_sync_file_exit
+ chmod 0755 /sys/kernel/tracing/events/f2fs
+ chmod 0755 /sys/kernel/tracing/events/f2fs/f2fs_get_data_block
+ chmod 0755 /sys/kernel/tracing/events/f2fs/f2fs_iget
+ chmod 0755 /sys/kernel/tracing/events/f2fs/f2fs_sync_file_enter
+ chmod 0755 /sys/kernel/tracing/events/f2fs/f2fs_sync_file_exit
+ chmod 0755 /sys/kernel/tracing/events/f2fs/f2fs_write_begin
+ chmod 0755 /sys/kernel/tracing/events/f2fs/f2fs_write_end
+ chmod 0755 /sys/kernel/tracing/events/fence
+ chmod 0755 /sys/kernel/tracing/events/filemap
+ chmod 0755 /sys/kernel/tracing/events/filemap/mm_filemap_add_to_page_cache
+ chmod 0755 /sys/kernel/tracing/events/filemap/mm_filemap_delete_from_page_cache
+ chmod 0755 /sys/kernel/tracing/events/gpu_mem
+ chmod 0755 /sys/kernel/tracing/events/gpu_mem/gpu_mem_total
+ chmod 0755 /sys/kernel/tracing/events/i2c
+ chmod 0755 /sys/kernel/tracing/events/i2c/i2c_read
+ chmod 0755 /sys/kernel/tracing/events/i2c/i2c_reply
+ chmod 0755 /sys/kernel/tracing/events/i2c/i2c_result
+ chmod 0755 /sys/kernel/tracing/events/i2c/i2c_write
+ chmod 0755 /sys/kernel/tracing/events/i2c/smbus_read
+ chmod 0755 /sys/kernel/tracing/events/i2c/smbus_reply
+ chmod 0755 /sys/kernel/tracing/events/i2c/smbus_result
+ chmod 0755 /sys/kernel/tracing/events/i2c/smbus_write
+ chmod 0755 /sys/kernel/tracing/events/ion
+ chmod 0755 /sys/kernel/tracing/events/ion/ion_stat
+ chmod 0755 /sys/kernel/tracing/events/ipi
+ chmod 0755 /sys/kernel/tracing/events/ipi/ipi_entry
+ chmod 0755 /sys/kernel/tracing/events/ipi/ipi_exit
+ chmod 0755 /sys/kernel/tracing/events/ipi/ipi_raise
+ chmod 0755 /sys/kernel/tracing/events/irq
+ chmod 0755 /sys/kernel/tracing/events/irq/irq_handler_entry
+ chmod 0755 /sys/kernel/tracing/events/irq/irq_handler_exit
+ chmod 0755 /sys/kernel/tracing/events/irq/softirq_entry
+ chmod 0755 /sys/kernel/tracing/events/irq/softirq_exit
+ chmod 0755 /sys/kernel/tracing/events/irq/softirq_raise
+ chmod 0755 /sys/kernel/tracing/events/irq/tasklet_entry
+ chmod 0755 /sys/kernel/tracing/events/irq/tasklet_exit
+ chmod 0755 /sys/kernel/tracing/events/irq/tasklet_hi_entry
+ chmod 0755 /sys/kernel/tracing/events/irq/tasklet_hi_exit
+ chmod 0755 /sys/kernel/tracing/events/kmem
+ chmod 0755 /sys/kernel/tracing/events/kmem/ion_heap_grow
+ chmod 0755 /sys/kernel/tracing/events/kmem/ion_heap_shrink
+ chmod 0755 /sys/kernel/tracing/events/kmem/rss_stat
+ chmod 0755 /sys/kernel/tracing/events/lowmemorykiller
+ chmod 0755 /sys/kernel/tracing/events/lowmemorykiller/lowmemory_kill
+ chmod 0755 /sys/kernel/tracing/events/mm_event
+ chmod 0755 /sys/kernel/tracing/events/mm_event/mm_event_record
+ chmod 0755 /sys/kernel/tracing/events/oom
+ chmod 0755 /sys/kernel/tracing/events/oom/mark_victim
+ chmod 0755 /sys/kernel/tracing/events/oom/oom_score_adj_update
+ chmod 0755 /sys/kernel/tracing/events/power
+ chmod 0755 /sys/kernel/tracing/events/power/clock_disable
+ chmod 0755 /sys/kernel/tracing/events/power/clock_enable
+ chmod 0755 /sys/kernel/tracing/events/power/clock_set_rate
+ chmod 0755 /sys/kernel/tracing/events/power/cpu_frequency
+ chmod 0755 /sys/kernel/tracing/events/power/cpu_frequency_limits
+ chmod 0755 /sys/kernel/tracing/events/power/cpu_idle
+ chmod 0755 /sys/kernel/tracing/events/power/gpu_frequency
+ chmod 0755 /sys/kernel/tracing/events/power/suspend_resume
+ chmod 0755 /sys/kernel/tracing/events/sched
+ chmod 0755 /sys/kernel/tracing/events/sched/sched_blocked_reason
+ chmod 0755 /sys/kernel/tracing/events/sched/sched_cpu_hotplug
+ chmod 0755 /sys/kernel/tracing/events/sched/sched_pi_setprio
+ chmod 0755 /sys/kernel/tracing/events/sched/sched_process_exit
+ chmod 0755 /sys/kernel/tracing/events/sched/sched_switch
+ chmod 0755 /sys/kernel/tracing/events/sched/sched_wakeup
+ chmod 0755 /sys/kernel/tracing/events/sched/sched_wakeup_new
+ chmod 0755 /sys/kernel/tracing/events/sched/sched_waking
+ chmod 0755 /sys/kernel/tracing/events/signal
+ chmod 0755 /sys/kernel/tracing/events/signal/signal_deliver
+ chmod 0755 /sys/kernel/tracing/events/signal/signal_generate
+ chmod 0755 /sys/kernel/tracing/events/sync
+ chmod 0755 /sys/kernel/tracing/events/task
+ chmod 0755 /sys/kernel/tracing/events/task/task_newtask
+ chmod 0755 /sys/kernel/tracing/events/task/task_rename
+ chmod 0755 /sys/kernel/tracing/events/thermal
+ chmod 0755 /sys/kernel/tracing/events/thermal/cdev_update
+ chmod 0755 /sys/kernel/tracing/events/thermal/thermal_temperature
+ chmod 0755 /sys/kernel/tracing/events/vmscan
+ chmod 0755 /sys/kernel/tracing/events/vmscan/mm_vmscan_direct_reclaim_begin
+ chmod 0755 /sys/kernel/tracing/events/vmscan/mm_vmscan_direct_reclaim_end
+ chmod 0755 /sys/kernel/tracing/events/vmscan/mm_vmscan_kswapd_sleep
+ chmod 0755 /sys/kernel/tracing/events/vmscan/mm_vmscan_kswapd_wake
+ chmod 0755 /sys/kernel/tracing/options
+ chmod 0755 /sys/kernel/tracing/per_cpu
+ chmod 0755 /sys/kernel/tracing/per_cpu/cpu0
+ chmod 0755 /sys/kernel/tracing/per_cpu/cpu1
+ chmod 0755 /sys/kernel/tracing/per_cpu/cpu2
+ chmod 0755 /sys/kernel/tracing/per_cpu/cpu3
+ chmod 0755 /sys/kernel/tracing/per_cpu/cpu4
+ chmod 0755 /sys/kernel/tracing/per_cpu/cpu5
+ chmod 0755 /sys/kernel/tracing/per_cpu/cpu6
+ chmod 0755 /sys/kernel/tracing/per_cpu/cpu7
+ chmod 0755 /sys/kernel/tracing/per_cpu/cpu8
+ chmod 0755 /sys/kernel/tracing/per_cpu/cpu9
+ chmod 0755 /sys/kernel/tracing/per_cpu/cpu10
+ chmod 0755 /sys/kernel/tracing/per_cpu/cpu11
+ chmod 0755 /sys/kernel/tracing/per_cpu/cpu12
+ chmod 0755 /sys/kernel/tracing/per_cpu/cpu13
+ chmod 0755 /sys/kernel/tracing/per_cpu/cpu14
+ chmod 0755 /sys/kernel/tracing/per_cpu/cpu15
+ chmod 0755 /sys/kernel/tracing/per_cpu/cpu16
+ chmod 0755 /sys/kernel/tracing/per_cpu/cpu17
+ chmod 0755 /sys/kernel/tracing/per_cpu/cpu18
+ chmod 0755 /sys/kernel/tracing/per_cpu/cpu19
+ chmod 0755 /sys/kernel/tracing/per_cpu/cpu20
+ chmod 0755 /sys/kernel/tracing/per_cpu/cpu21
+ chmod 0755 /sys/kernel/tracing/per_cpu/cpu22
+ chmod 0755 /sys/kernel/tracing/per_cpu/cpu23
chmod 0666 /sys/kernel/debug/tracing/trace_clock
chmod 0666 /sys/kernel/tracing/trace_clock
chmod 0666 /sys/kernel/debug/tracing/buffer_size_kb