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funcgraph_example.txt
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funcgraph_example.txt
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Demonstrations of funcgraph, the Linux ftrace version.
I'll start by showing do_nanosleep(), since it's usually a low frequency
function that can be easily triggered (run "vmstat 1"):
# ./funcgraph do_nanosleep
Tracing "do_nanosleep"... Ctrl-C to end.
0) | do_nanosleep() {
0) | hrtimer_start_range_ns() {
0) | __hrtimer_start_range_ns() {
0) | lock_hrtimer_base.isra.24() {
0) 0.198 us | _raw_spin_lock_irqsave();
0) 0.908 us | }
0) 0.061 us | idle_cpu();
0) 0.117 us | ktime_get();
0) 0.371 us | enqueue_hrtimer();
0) 0.075 us | _raw_spin_unlock_irqrestore();
0) 3.447 us | }
0) 3.998 us | }
0) | schedule() {
0) | __schedule() {
0) 0.050 us | rcu_note_context_switch();
0) 0.055 us | _raw_spin_lock_irq();
0) | deactivate_task() {
0) | dequeue_task() {
0) 0.142 us | update_rq_clock();
0) | dequeue_task_fair() {
0) | dequeue_entity() {
0) | update_curr() {
0) 0.086 us | cpuacct_charge();
0) 0.757 us | }
0) 0.052 us | clear_buddies();
0) 0.103 us | update_cfs_load();
0) | update_cfs_shares() {
0) | reweight_entity() {
0) 0.077 us | update_curr();
0) 0.438 us | }
0) 0.794 us | }
0) 3.067 us | }
0) 0.064 us | set_next_buddy();
0) 0.066 us | update_cfs_load();
0) 0.085 us | update_cfs_shares();
0) | hrtick_update() {
0) 0.063 us | hrtick_start_fair();
0) 0.367 us | }
0) 5.188 us | }
0) 5.923 us | }
0) 6.228 us | }
0) | put_prev_task_fair() {
0) 0.078 us | put_prev_entity();
0) | put_prev_entity() {
0) 0.070 us | update_curr();
0) 0.074 us | __enqueue_entity();
0) 0.737 us | }
0) 1.367 us | }
0) | pick_next_task_fair() {
0) | pick_next_entity() {
0) 0.052 us | wakeup_preempt_entity.isra.95();
0) 0.070 us | clear_buddies();
0) 0.676 us | }
0) | set_next_entity() {
0) 0.052 us | update_stats_wait_end();
0) 0.435 us | }
0) | pick_next_entity() {
0) 0.065 us | clear_buddies();
0) 0.376 us | }
0) | set_next_entity() {
0) 0.067 us | update_stats_wait_end();
0) 0.374 us | }
0) 0.051 us | hrtick_start_fair();
0) 3.879 us | }
0) 0.057 us | paravirt_start_context_switch();
0) | xen_load_sp0() {
0) 0.050 us | paravirt_get_lazy_mode();
0) 0.057 us | __xen_mc_entry();
0) 0.056 us | paravirt_get_lazy_mode();
0) 1.441 us | }
0) | xen_load_tls() {
0) 0.049 us | paravirt_get_lazy_mode();
0) 0.051 us | paravirt_get_lazy_mode();
0) | load_TLS_descriptor() {
0) | arbitrary_virt_to_machine() {
0) 0.081 us | __virt_addr_valid();
0) 0.052 us | __phys_addr();
0) 0.084 us | get_phys_to_machine();
0) 1.115 us | }
0) 0.053 us | __xen_mc_entry();
0) 1.744 us | }
0) | load_TLS_descriptor() {
0) | arbitrary_virt_to_machine() {
0) 0.053 us | __virt_addr_valid();
0) 0.056 us | __phys_addr();
0) 0.057 us | get_phys_to_machine();
0) 0.990 us | }
0) 0.053 us | __xen_mc_entry();
0) 1.583 us | } /* load_TLS_descriptor */
0) | load_TLS_descriptor() {
0) | arbitrary_virt_to_machine() {
0) 0.057 us | __virt_addr_valid();
0) 0.051 us | __phys_addr();
0) 0.053 us | get_phys_to_machine();
0) 0.978 us | }
0) 0.052 us | __xen_mc_entry();
0) 1.586 us | }
0) 0.052 us | paravirt_get_lazy_mode();
0) 6.630 us | }
0) | xen_end_context_switch() {
0) 0.666 us | xen_mc_flush();
0) 0.050 us | paravirt_end_context_switch();
0) 1.286 us | }
0) 0.172 us | xen_write_msr_safe();
------------------------------------------
0) platfor-3210 => vmstat-2854
------------------------------------------
0) | do_nanosleep() {
0) | hrtimer_start_range_ns() {
0) | __hrtimer_start_range_ns() {
0) | lock_hrtimer_base.isra.24() {
0) 0.217 us | _raw_spin_lock_irqsave();
0) 0.831 us | }
0) 0.066 us | idle_cpu();
0) 0.123 us | ktime_get();
0) 1.172 us | enqueue_hrtimer();
0) 0.089 us | _raw_spin_unlock_irqrestore();
0) 4.050 us | }
0) 4.523 us | }
[...]
The default output shows the function call graph, including all child kernel
functions, along with the function duration times. These times are printed on
either the return line for the function ("}"), or for leaf functions, on the
same line.
The format of this output is documented in the function graph section of the
kernel source file Documentation/trace/ftrace.txt.
This particular example shows the workings of do_nanosleep, in the first dozen
lines, and then schedule() is called to sleep this thread and run another. The
inner workings of schedule() is included in the output.
This output is great for determining the behavior of a certain kernel function,
and to identify functions that can be studied in more details using other, lower
overhead, tools (eg, funccount(8), functrace(8), kprobe(8)). The overheads
of funcgraph are moderate, since all kernel functions are traced in case
they are executed, then included in the output if they are.
Now, if you want to start understanding the general behavior of the kernel,
without a certain kernel function in mind, you may be better to begin with
CPU stack profiling using perf and generating a flame graph. Such an approach
has low overhead, as you are in control of the frequency of event collection
(eg, gathering CPU stacks at 99 Hertz). For instructions, see:
http://www.brendangregg.com/perf.html#FlameGraphs
On newer Linux kernels, you can use the -m option to limit the function
depth. Eg, 3 levels only:
# ./funcgraph -m 3 do_nanosleep
Tracing "do_nanosleep"... Ctrl-C to end.
1) | do_nanosleep() {
1) | hrtimer_start_range_ns() {
1) 1.115 us | __hrtimer_start_range_ns();
1) 1.919 us | }
1) | schedule() {
1) | __schedule() {
1) 1000131 us | }
1) 11.006 us | xen_evtchn_do_upcall();
1) 1000149 us | }
1) | hrtimer_cancel() {
1) 0.212 us | hrtimer_try_to_cancel();
1) 0.699 us | }
1) 1000154 us | }
Neat.
Now do_sys_open() to 3 levels:
0) | do_sys_open() {
0) | getname() {
0) 0.296 us | getname_flags();
0) 0.768 us | }
0) | get_unused_fd_flags() {
0) 0.397 us | __alloc_fd();
0) 0.827 us | }
0) | do_filp_open() {
0) 4.166 us | path_openat();
0) 4.617 us | }
0) | __fsnotify_parent() {
0) 0.083 us | dget_parent();
0) 0.063 us | dput();
0) 0.883 us | }
0) 0.058 us | fsnotify();
0) | fd_install() {
0) 0.133 us | __fd_install();
0) 0.525 us | }
0) | putname() {
0) 0.198 us | final_putname();
0) 0.512 us | }
0) 10.777 us | }
[...]
I can then pick the highest latency child function, then run funcgraph again
using it as the target.
Without timestamps (-D to elide duration):
# ./funcgraph -Dm 3 do_sys_open
Tracing "do_sys_open"... Ctrl-C to end.
1) do_sys_open() {
1) getname() {
1) getname_flags();
1) }
1) get_unused_fd_flags() {
1) __alloc_fd();
1) }
1) do_filp_open() {
1) path_openat();
1) }
1) __fsnotify_parent();
1) fsnotify();
1) fd_install() {
1) __fd_install();
1) }
1) putname() {
1) final_putname();
1) }
1) }
Beautiful.
I could elide the CPU column as well, but I want to leave it: if it changes
half-way through some output, you know the CPU buffer has switched, and the
output may be shuffled.
For this example, I trace vfs_read() calls by process ID 5363: which is a bash
shell. I also include headers (-H) and absolute timestamps (-t). While
tracing, in that bash shell, I typed the word "hello":
# ./funcgraph -Htp 5363 vfs_read
Tracing "vfs_read" for PID 5363... Ctrl-C to end.
# tracer: function_graph
#
# TIME CPU DURATION FUNCTION CALLS
# | | | | | | | |
7238523.638008 | 0) | finish_task_switch() {
7238523.638012 | 0) | xen_evtchn_do_upcall() {
7238523.638012 | 0) | irq_enter() {
7238523.638013 | 0) 0.153 us | rcu_irq_enter();
7238523.638014 | 0) 1.144 us | }
7238523.638014 | 0) 0.056 us | exit_idle();
7238523.638014 | 0) | __xen_evtchn_do_upcall() {
7238523.638015 | 0) | evtchn_2l_handle_events() {
7238523.638015 | 0) 0.057 us | irq_from_virq();
7238523.638015 | 0) | evtchn_from_irq() {
7238523.638015 | 0) | irq_get_irq_data() {
7238523.638016 | 0) 0.058 us | irq_to_desc();
7238523.638016 | 0) 0.565 us | }
7238523.638016 | 0) 0.966 us | }
7238523.638016 | 0) | get_evtchn_to_irq() {
7238523.638017 | 0) 0.050 us | evtchn_2l_max_channels();
7238523.638017 | 0) 0.386 us | }
7238523.638017 | 0) | generic_handle_irq() {
7238523.638017 | 0) 0.058 us | irq_to_desc();
7238523.638018 | 0) | handle_percpu_irq() {
7238523.638018 | 0) | ack_dynirq() {
7238523.638018 | 0) | evtchn_from_irq() {
7238523.638018 | 0) | irq_get_irq_data() {
7238523.638019 | 0) 0.049 us | irq_to_desc();
7238523.638019 | 0) 0.441 us | }
7238523.638019 | 0) 0.772 us | }
7238523.638019 | 0) 0.049 us | irq_move_irq();
7238523.638020 | 0) 0.060 us | evtchn_2l_clear_pending();
7238523.638020 | 0) 1.810 us | }
7238523.638020 | 0) | handle_irq_event_percpu() {
7238523.638020 | 0) | xen_irq_work_interrupt() {
7238523.638021 | 0) | irq_enter() {
7238523.638021 | 0) 0.056 us | rcu_irq_enter();
7238523.638021 | 0) 0.384 us | }
7238523.638021 | 0) | __wake_up() {
7238523.638022 | 0) 0.059 us | _raw_spin_lock_irqsave();
7238523.638022 | 0) | __wake_up_common() {
7238523.638022 | 0) | autoremove_wake_function() {
7238523.638023 | 0) | default_wake_function() {
7238523.638023 | 0) | try_to_wake_up() {
7238523.638023 | 0) 0.220 us | _raw_spin_lock_irqsave();
7238523.638024 | 0) 0.270 us | task_waking_fair();
7238523.638024 | 0) | select_task_rq_fair() {
7238523.638025 | 0) 0.055 us | source_load();
7238523.638025 | 0) 0.056 us | target_load();
7238523.638025 | 0) 0.060 us | idle_cpu();
7238523.638026 | 0) 0.054 us | cpus_share_cache();
7238523.638026 | 0) 0.083 us | idle_cpu();
7238523.638026 | 0) 2.060 us | }
7238523.638027 | 0) 0.051 us | _raw_spin_lock();
7238523.638027 | 0) | ttwu_do_activate.constprop.124() {
7238523.638027 | 0) | activate_task() {
7238523.638027 | 0) | enqueue_task() {
7238523.638028 | 0) 0.120 us | update_rq_clock();
7238523.638028 | 0) | enqueue_task_fair() {
7238523.638028 | 0) | enqueue_entity() {
7238523.638028 | 0) 0.147 us | update_curr();
7238523.638029 | 0) 0.055 us | __compute_runnable_contrib.part.51();
7238523.638029 | 0) 0.066 us | __update_entity_load_avg_contrib();
7238523.638029 | 0) 0.141 us | update_cfs_rq_blocked_load();
7238523.638030 | 0) 0.068 us | account_entity_enqueue();
7238523.638030 | 0) 0.351 us | update_cfs_shares();
7238523.638031 | 0) 0.053 us | place_entity();
7238523.638031 | 0) 0.082 us | __enqueue_entity();
7238523.638032 | 0) 0.050 us | update_cfs_rq_blocked_load();
7238523.638032 | 0) 3.922 us | }
7238523.638032 | 0) | enqueue_entity() {
7238523.638033 | 0) 0.058 us | update_curr();
7238523.638033 | 0) 0.056 us | __compute_runnable_contrib.part.51();
7238523.638033 | 0) 0.078 us | __update_entity_load_avg_contrib();
7238523.638034 | 0) 0.055 us | update_cfs_rq_blocked_load();
7238523.638034 | 0) 0.064 us | account_entity_enqueue();
7238523.638034 | 0) 0.059 us | update_cfs_shares();
7238523.638035 | 0) 0.050 us | place_entity();
7238523.638036 | 0) 0.057 us | __enqueue_entity();
7238523.638036 | 0) 3.829 us | }
7238523.638037 | 0) 0.057 us | hrtick_update();
7238523.638037 | 0) 8.876 us | }
7238523.638037 | 0) 9.698 us | }
7238523.638037 | 0) 10.113 us | }
7238523.638038 | 0) | ttwu_do_wakeup() {
7238523.638038 | 0) | check_preempt_curr() {
7238523.638038 | 0) | resched_task() {
7238523.638038 | 0) | xen_smp_send_reschedule() {
7238523.638038 | 0) | xen_send_IPI_one() {
7238523.638039 | 0) | notify_remote_via_irq() {
7238523.638039 | 0) | evtchn_from_irq() {
7238523.638039 | 0) | irq_get_irq_data() {
7238523.638039 | 0) 0.051 us | irq_to_desc();
7238523.638039 | 0) 0.518 us | }
7238523.638040 | 0) 0.955 us | }
7238523.638041 | 0) 2.001 us | }
7238523.638041 | 0) 2.391 us | }
7238523.638041 | 0) 2.745 us | }
7238523.638041 | 0) 3.183 us | }
7238523.638042 | 0) 3.663 us | }
7238523.638042 | 0) 4.621 us | }
7238523.638043 | 0) 15.443 us | }
7238523.638043 | 0) 0.067 us | _raw_spin_unlock();
7238523.638043 | 0) 0.167 us | ttwu_stat();
7238523.638044 | 0) 0.087 us | _raw_spin_unlock_irqrestore();
7238523.638044 | 0) 21.447 us | }
7238523.638045 | 0) 21.940 us | }
7238523.638045 | 0) 22.406 us | }
7238523.638045 | 0) 23.071 us | }
7238523.638045 | 0) 0.073 us | _raw_spin_unlock_irqrestore();
7238523.638046 | 0) 24.382 us | }
7238523.638046 | 0) | irq_exit() {
7238523.638047 | 0) 0.085 us | idle_cpu();
7238523.638047 | 0) 0.093 us | rcu_irq_exit();
7238523.638048 | 0) 1.242 us | }
7238523.638048 | 0) 27.410 us | }
7238523.638049 | 0) 0.139 us | add_interrupt_randomness();
7238523.638049 | 0) 0.089 us | note_interrupt();
7238523.638050 | 0) 29.582 us | }
7238523.638050 | 0) 32.112 us | }
7238523.638050 | 0) 32.951 us | }
7238523.638051 | 0) 35.765 us | }
7238523.638051 | 0) 36.170 us | }
7238523.638051 | 0) | irq_exit() {
7238523.638051 | 0) 0.082 us | idle_cpu();
7238523.638052 | 0) 0.071 us | rcu_irq_exit();
7238523.638053 | 0) 1.328 us | }
7238523.638053 | 0) 40.563 us | }
7238523.638054 | 0) | __mmdrop() {
7238523.638054 | 0) | pgd_free() {
7238523.638055 | 0) 0.151 us | _raw_spin_lock();
7238523.638055 | 0) 0.069 us | _raw_spin_unlock();
7238523.638056 | 0) | xen_pgd_free() {
7238523.638056 | 0) 0.067 us | xen_get_user_pgd();
7238523.638057 | 0) | free_pages() {
7238523.638057 | 0) | __free_pages() {
7238523.638057 | 0) | free_hot_cold_page() {
7238523.638058 | 0) 0.080 us | free_pages_prepare();
7238523.638058 | 0) 0.363 us | get_pfnblock_flags_mask();
7238523.638059 | 0) 1.626 us | }
7238523.638059 | 0) 2.317 us | }
7238523.638060 | 0) 2.847 us | }
7238523.638060 | 0) 3.908 us | }
7238523.638060 | 0) | free_pages() {
7238523.638060 | 0) | __free_pages() {
7238523.638061 | 0) | free_hot_cold_page() {
7238523.638061 | 0) 0.083 us | free_pages_prepare();
7238523.638061 | 0) 0.139 us | get_pfnblock_flags_mask();
7238523.638062 | 0) 1.062 us | }
7238523.638062 | 0) 1.534 us | }
7238523.638062 | 0) 2.038 us | }
7238523.638063 | 0) 8.268 us | }
7238523.638064 | 0) 0.160 us | destroy_context();
7238523.638065 | 0) 0.384 us | kmem_cache_free();
7238523.638066 | 0) 11.433 us | }
7238523.638066 | 0) 54.448 us | }
7238523.638066 | 0) 19354026 us | } /* __schedule */
7238523.638067 | 0) 19354026 us | } /* schedule */
7238523.638067 | 0) 19354027 us | } /* schedule_timeout */
7238523.638067 | 0) 0.121 us | down_read();
7238523.638068 | 0) | copy_from_read_buf() {
7238523.638069 | 0) | tty_audit_add_data() {
7238523.638070 | 0) 0.220 us | _raw_spin_lock_irqsave();
7238523.638071 | 0) 0.097 us | _raw_spin_unlock_irqrestore();
7238523.638071 | 0) 0.078 us | _raw_spin_lock_irqsave();
7238523.638072 | 0) 0.077 us | _raw_spin_unlock_irqrestore();
7238523.638072 | 0) 2.795 us | }
7238523.638073 | 0) 4.183 us | }
7238523.638073 | 0) 0.084 us | copy_from_read_buf();
7238523.638074 | 0) 0.078 us | n_tty_set_room();
7238523.638074 | 0) 0.082 us | n_tty_write_wakeup();
7238523.638075 | 0) | __wake_up() {
7238523.638075 | 0) 0.084 us | _raw_spin_lock_irqsave();
7238523.638076 | 0) | __wake_up_common() {
7238523.638076 | 0) 0.095 us | pollwake();
7238523.638077 | 0) 0.819 us | }
7238523.638077 | 0) 0.074 us | _raw_spin_unlock_irqrestore();
7238523.638078 | 0) 2.463 us | }
7238523.638078 | 0) 0.071 us | n_tty_set_room();
7238523.638078 | 0) 0.082 us | up_read();
7238523.638079 | 0) | remove_wait_queue() {
7238523.638079 | 0) 0.082 us | _raw_spin_lock_irqsave();
7238523.638080 | 0) 0.086 us | _raw_spin_unlock_irqrestore();
7238523.638080 | 0) 1.239 us | }
7238523.638081 | 0) 0.142 us | mutex_unlock();
7238523.638081 | 0) 19354047 us | } /* n_tty_read */
7238523.638082 | 0) | tty_ldisc_deref() {
7238523.638082 | 0) 0.064 us | ldsem_up_read();
7238523.638082 | 0) 0.554 us | }
7238523.638083 | 0) 0.074 us | get_seconds();
7238523.638083 | 0) 19354052 us | } /* tty_read */
7238523.638084 | 0) 0.352 us | __fsnotify_parent();
7238523.638085 | 0) 0.178 us | fsnotify();
7238523.638085 | 0) 19354058 us | } /* vfs_read */
7238523.638156 | 0) | vfs_read() {
7238523.638157 | 0) | rw_verify_area() {
7238523.638157 | 0) | security_file_permission() {
7238523.638158 | 0) | apparmor_file_permission() {
7238523.638158 | 0) 0.183 us | common_file_perm();
7238523.638159 | 0) 0.778 us | }
7238523.638159 | 0) 0.081 us | __fsnotify_parent();
7238523.638160 | 0) 0.104 us | fsnotify();
7238523.638160 | 0) 2.662 us | }
7238523.638161 | 0) 3.337 us | }
7238523.638161 | 0) | tty_read() {
7238523.638161 | 0) 0.067 us | tty_paranoia_check();
7238523.638162 | 0) | tty_ldisc_ref_wait() {
7238523.638162 | 0) 0.080 us | } /* ldsem_down_read */
7238523.638163 | 0) 0.637 us | }
7238523.638163 | 0) | n_tty_read() {
7238523.638164 | 0) 0.078 us | _raw_spin_lock_irq();
7238523.638164 | 0) 0.090 us | mutex_lock_interruptible();
7238523.638165 | 0) 0.078 us | down_read();
7238523.638165 | 0) | add_wait_queue() {
7238523.638166 | 0) 0.070 us | _raw_spin_lock_irqsave();
7238523.638166 | 0) 0.084 us | _raw_spin_unlock_irqrestore();
7238523.638167 | 0) 1.111 us | }
7238523.638167 | 0) 0.083 us | tty_hung_up_p();
7238523.638168 | 0) 0.080 us | n_tty_set_room();
7238523.638169 | 0) 0.068 us | up_read();
7238523.638169 | 0) | schedule_timeout() {
7238523.638170 | 0) | schedule() {
7238523.638170 | 0) | __schedule() {
7238523.638171 | 0) 0.078 us | rcu_note_context_switch();
7238523.638171 | 0) 0.081 us | _raw_spin_lock_irq();
7238523.638172 | 0) | deactivate_task() {
7238523.638172 | 0) | dequeue_task() {
7238523.638172 | 0) 0.181 us | update_rq_clock();
7238523.638173 | 0) | dequeue_task_fair() {
7238523.638174 | 0) | dequeue_entity() {
7238523.638174 | 0) | update_curr() {
7238523.638174 | 0) 0.257 us | cpuacct_charge();
7238523.638175 | 0) 0.982 us | }
7238523.638175 | 0) 0.079 us | update_cfs_rq_blocked_load();
7238523.638176 | 0) 0.080 us | clear_buddies();
7238523.638177 | 0) 0.096 us | account_entity_dequeue();
7238523.638177 | 0) | update_cfs_shares() {
7238523.638178 | 0) 0.113 us | update_curr();
7238523.638178 | 0) 0.087 us | account_entity_dequeue();
7238523.638179 | 0) 0.073 us | account_entity_enqueue();
7238523.638179 | 0) 1.948 us | }
7238523.638180 | 0) 5.913 us | }
7238523.638180 | 0) | dequeue_entity() {
7238523.638180 | 0) 0.086 us | update_curr();
7238523.638181 | 0) 0.079 us | update_cfs_rq_blocked_load();
7238523.638182 | 0) 0.076 us | clear_buddies();
7238523.638182 | 0) 0.076 us | account_entity_dequeue();
7238523.638183 | 0) 0.104 us | update_cfs_shares();
7238523.638183 | 0) 3.171 us | }
7238523.638184 | 0) 0.076 us | hrtick_update();
7238523.638184 | 0) 10.785 us | }
7238523.638184 | 0) 12.057 us | }
7238523.638185 | 0) 12.704 us | }
7238523.638185 | 0) | pick_next_task_fair() {
7238523.638185 | 0) 0.074 us | check_cfs_rq_runtime();
7238523.638186 | 0) | pick_next_entity() {
7238523.638186 | 0) 0.067 us | clear_buddies();
7238523.638187 | 0) 0.544 us | }
7238523.638187 | 0) | put_prev_entity() {
7238523.638187 | 0) 0.079 us | check_cfs_rq_runtime();
7238523.638188 | 0) 0.612 us | }
7238523.638188 | 0) | put_prev_entity() {
7238523.638188 | 0) 0.076 us | check_cfs_rq_runtime();
7238523.638189 | 0) 0.618 us | }
7238523.638189 | 0) | set_next_entity() {
7238523.638190 | 0) 0.078 us | update_stats_wait_end();
7238523.638190 | 0) 0.712 us | }
7238523.638190 | 0) 5.023 us | }
7238523.638191 | 0) 0.086 us | paravirt_start_context_switch();
7238523.638192 | 0) 0.070 us | xen_read_cr0();
7238523.638193 | 0) | xen_write_cr0() {
7238523.638193 | 0) 0.085 us | paravirt_get_lazy_mode();
7238523.638194 | 0) 0.085 us | __xen_mc_entry();
7238523.638194 | 0) 0.077 us | paravirt_get_lazy_mode();
7238523.638195 | 0) 1.822 us | }
7238523.638195 | 0) | xen_load_sp0() {
7238523.638195 | 0) 0.074 us | paravirt_get_lazy_mode();
7238523.638196 | 0) 0.085 us | __xen_mc_entry();
7238523.638196 | 0) 0.078 us | paravirt_get_lazy_mode();
7238523.638197 | 0) 1.754 us | }
7238523.638197 | 0) | xen_load_tls() {
7238523.638198 | 0) 0.069 us | paravirt_get_lazy_mode();
7238523.638198 | 0) 0.082 us | paravirt_get_lazy_mode();
7238523.638199 | 0) 0.127 us | load_TLS_descriptor();
7238523.638199 | 0) 0.080 us | load_TLS_descriptor();
7238523.638200 | 0) 0.094 us | load_TLS_descriptor();
7238523.638201 | 0) 0.081 us | paravirt_get_lazy_mode();
7238523.638202 | 0) 4.155 us | }
7238523.638202 | 0) | xen_end_context_switch() {
7238523.638202 | 0) 0.699 us | xen_mc_flush();
7238523.638204 | 0) 0.089 us | paravirt_end_context_switch();
7238523.638204 | 0) 1.915 us | }
7238523.797630 | 0) | finish_task_switch() {
7238523.797634 | 0) | xen_evtchn_do_upcall() {
7238523.797634 | 0) | irq_enter() {
7238523.797634 | 0) 0.134 us | rcu_irq_enter();
7238523.797635 | 0) 0.688 us | }
7238523.797635 | 0) 0.055 us | exit_idle();
7238523.797635 | 0) | __xen_evtchn_do_upcall() {
7238523.797636 | 0) | evtchn_2l_handle_events() {
7238523.797636 | 0) 0.048 us | irq_from_virq();
7238523.797636 | 0) | evtchn_from_irq() {
7238523.797636 | 0) | irq_get_irq_data() {
7238523.797637 | 0) 0.061 us | irq_to_desc();
7238523.797637 | 0) 0.564 us | }
7238523.797637 | 0) 0.954 us | }
7238523.797638 | 0) | get_evtchn_to_irq() {
7238523.797638 | 0) 0.057 us | evtchn_2l_max_channels();
7238523.797638 | 0) 0.409 us | }
7238523.797638 | 0) | generic_handle_irq() {
7238523.797638 | 0) 0.052 us | irq_to_desc();
7238523.797639 | 0) | handle_percpu_irq() {
7238523.797639 | 0) | ack_dynirq() {
7238523.797639 | 0) | evtchn_from_irq() {
7238523.797639 | 0) | irq_get_irq_data() {
7238523.797640 | 0) 0.057 us | irq_to_desc();
7238523.797640 | 0) 0.440 us | }
7238523.797640 | 0) 0.746 us | }
7238523.797640 | 0) 0.056 us | irq_move_irq();
7238523.797641 | 0) 0.058 us | evtchn_2l_clear_pending();
7238523.797641 | 0) 1.729 us | }
7238523.797641 | 0) | handle_irq_event_percpu() {
7238523.797641 | 0) | xen_irq_work_interrupt() {
7238523.797642 | 0) | irq_enter() {
7238523.797642 | 0) 0.053 us | rcu_irq_enter();
7238523.797642 | 0) 0.396 us | }
7238523.797642 | 0) | __wake_up() {
7238523.797643 | 0) 0.053 us | _raw_spin_lock_irqsave();
7238523.797643 | 0) | __wake_up_common() {
7238523.797643 | 0) | autoremove_wake_function() {
7238523.797644 | 0) | default_wake_function() {
7238523.797644 | 0) | try_to_wake_up() {
7238523.797644 | 0) 0.228 us | _raw_spin_lock_irqsave();
7238523.797645 | 0) 0.194 us | task_waking_fair();
7238523.797645 | 0) | select_task_rq_fair() {
7238523.797645 | 0) 0.051 us | source_load();
7238523.797646 | 0) 0.050 us | target_load();
7238523.797646 | 0) 0.067 us | idle_cpu();
7238523.797647 | 0) 0.050 us | cpus_share_cache();
7238523.797647 | 0) 0.068 us | idle_cpu();
7238523.797647 | 0) 1.983 us | }
7238523.797648 | 0) 0.051 us | _raw_spin_lock();
7238523.797648 | 0) | ttwu_do_activate.constprop.124() {
7238523.797648 | 0) | activate_task() {
7238523.797648 | 0) | enqueue_task() {
7238523.797648 | 0) 0.135 us | update_rq_clock();
7238523.797649 | 0) | enqueue_task_fair() {
7238523.797649 | 0) | enqueue_entity() {
7238523.797649 | 0) 0.059 us | update_curr();
7238523.797650 | 0) 0.073 us | __compute_runnable_contrib.part.51();
7238523.797650 | 0) 0.066 us | __update_entity_load_avg_contrib();
7238523.797650 | 0) 0.059 us | update_cfs_rq_blocked_load();
7238523.797651 | 0) 0.064 us | account_entity_enqueue();
7238523.797651 | 0) 0.137 us | update_cfs_shares();
7238523.797651 | 0) 0.054 us | place_entity();
7238523.797652 | 0) 0.074 us | __enqueue_entity();
7238523.797652 | 0) 3.085 us | }
7238523.797652 | 0) | enqueue_entity() {
7238523.797653 | 0) 0.058 us | update_curr();
7238523.797654 | 0) 0.049 us | update_cfs_rq_blocked_load();
7238523.797654 | 0) 0.057 us | account_entity_enqueue();
7238523.797655 | 0) 0.066 us | update_cfs_shares();
7238523.797655 | 0) 0.049 us | place_entity();
7238523.797655 | 0) 0.051 us | __enqueue_entity();
7238523.797656 | 0) 3.432 us | }
7238523.797656 | 0) 0.049 us | hrtick_update();
7238523.797657 | 0) 7.552 us | }
7238523.797657 | 0) 8.414 us | }
7238523.797657 | 0) 8.753 us | }
7238523.797657 | 0) | ttwu_do_wakeup() {
7238523.797657 | 0) | check_preempt_curr() {
7238523.797657 | 0) | resched_task() {
7238523.797658 | 0) | xen_smp_send_reschedule() {
7238523.797658 | 0) | xen_send_IPI_one() {
7238523.797658 | 0) | notify_remote_via_irq() {
7238523.797658 | 0) | evtchn_from_irq() {
7238523.797658 | 0) | irq_get_irq_data() {
7238523.797659 | 0) 0.069 us | irq_to_desc();
7238523.797659 | 0) 0.504 us | }
7238523.797659 | 0) 0.869 us | }
7238523.797660 | 0) 1.940 us | } /* notify_remote_via_irq */
7238523.797660 | 0) 2.319 us | }
7238523.797660 | 0) 2.712 us | }
7238523.797661 | 0) 3.147 us | }
7238523.797661 | 0) 3.625 us | }
7238523.797662 | 0) 4.525 us | }
7238523.797662 | 0) 13.961 us | }
7238523.797662 | 0) 0.069 us | _raw_spin_unlock();
7238523.797663 | 0) 0.168 us | ttwu_stat();
7238523.797663 | 0) 0.076 us | _raw_spin_unlock_irqrestore();
7238523.797664 | 0) 19.821 us | }
7238523.797664 | 0) 20.301 us | }
7238523.797664 | 0) 20.796 us | }
7238523.797664 | 0) 21.367 us | }
7238523.797665 | 0) 0.071 us | _raw_spin_unlock_irqrestore();
7238523.797665 | 0) 22.621 us | }
7238523.797666 | 0) | irq_exit() {
7238523.797666 | 0) 0.085 us | idle_cpu();
7238523.797666 | 0) 0.106 us | rcu_irq_exit();
7238523.797667 | 0) 1.220 us | }
7238523.797667 | 0) 25.712 us | }
7238523.797668 | 0) 0.138 us | add_interrupt_randomness();
7238523.797668 | 0) 0.092 us | note_interrupt();
7238523.797669 | 0) 27.713 us | }
7238523.797669 | 0) 30.163 us | }
7238523.797669 | 0) 31.017 us | }
7238523.797670 | 0) 33.953 us | }
7238523.797670 | 0) 34.384 us | }
7238523.797670 | 0) | irq_exit() {
7238523.797671 | 0) 0.079 us | idle_cpu();
7238523.797671 | 0) 0.072 us | rcu_irq_exit();
7238523.797672 | 0) 1.023 us | }
7238523.797672 | 0) 37.789 us | }
7238523.797672 | 0) 39.298 us | }
7238523.797673 | 0) 159502.1 us | }
7238523.797673 | 0) 159502.8 us | }
7238523.797673 | 0) 159503.5 us | }
7238523.797674 | 0) 0.112 us | down_read();
7238523.797675 | 0) | copy_from_read_buf() {
7238523.797676 | 0) | tty_audit_add_data() {
7238523.797676 | 0) 0.226 us | _raw_spin_lock_irqsave();
7238523.797677 | 0) 0.075 us | _raw_spin_unlock_irqrestore();
7238523.797677 | 0) 0.101 us | _raw_spin_lock_irqsave();
7238523.797678 | 0) 0.068 us | _raw_spin_unlock_irqrestore();
7238523.797679 | 0) 2.656 us | }
7238523.797679 | 0) 3.762 us | }
7238523.797679 | 0) 0.145 us | copy_from_read_buf();
7238523.797680 | 0) 0.068 us | n_tty_set_room();
7238523.797680 | 0) 0.058 us | n_tty_write_wakeup();
7238523.797681 | 0) | __wake_up() {
7238523.797682 | 0) 0.060 us | _raw_spin_lock_irqsave();
7238523.797682 | 0) | __wake_up_common() {
7238523.797683 | 0) 0.083 us | pollwake();
7238523.797683 | 0) 0.739 us | }
7238523.797683 | 0) 0.069 us | _raw_spin_unlock_irqrestore();
7238523.797684 | 0) 2.745 us | }
7238523.797684 | 0) 0.061 us | n_tty_set_room();
7238523.797685 | 0) 0.074 us | up_read();
7238523.797685 | 0) | remove_wait_queue() {
7238523.797685 | 0) 0.075 us | _raw_spin_lock_irqsave();
7238523.797686 | 0) 0.070 us | _raw_spin_unlock_irqrestore();
7238523.797686 | 0) 1.110 us | }
7238523.797687 | 0) 0.146 us | mutex_unlock();
7238523.797687 | 0) 159524.0 us | }
7238523.797688 | 0) | tty_ldisc_deref() {
7238523.797688 | 0) 0.070 us | ldsem_up_read();
7238523.797689 | 0) 0.739 us | }
7238523.797689 | 0) 0.066 us | get_seconds();
7238523.797690 | 0) 159528.3 us | }
7238523.797690 | 0) 0.298 us | __fsnotify_parent();
7238523.797691 | 0) 0.179 us | fsnotify();
7238523.797692 | 0) 159534.6 us | }
7238523.797762 | 0) | vfs_read() {
7238523.797763 | 0) | rw_verify_area() {
7238523.797763 | 0) | security_file_permission() {
7238523.797764 | 0) | apparmor_file_permission() {
7238523.797764 | 0) 0.165 us | common_file_perm();
7238523.797765 | 0) 0.732 us | }
7238523.797765 | 0) 0.081 us | __fsnotify_parent();
7238523.797766 | 0) 0.094 us | fsnotify();
7238523.797766 | 0) 2.711 us | }
7238523.797767 | 0) 3.386 us | }
7238523.797767 | 0) | tty_read() {
7238523.797767 | 0) 0.077 us | tty_paranoia_check();
7238523.797768 | 0) | tty_ldisc_ref_wait() {
7238523.797768 | 0) 0.083 us | ldsem_down_read();
7238523.797769 | 0) 0.686 us | }
7238523.797769 | 0) | n_tty_read() {
7238523.797770 | 0) 0.071 us | _raw_spin_lock_irq();
7238523.797770 | 0) 0.111 us | mutex_lock_interruptible();
7238523.797771 | 0) 0.072 us | down_read();
7238523.797771 | 0) | add_wait_queue() {
7238523.797772 | 0) 0.083 us | _raw_spin_lock_irqsave();
7238523.797772 | 0) 0.085 us | _raw_spin_unlock_irqrestore();
7238523.797773 | 0) 1.124 us | }
7238523.797773 | 0) 0.066 us | tty_hung_up_p();
7238523.797774 | 0) 0.090 us | n_tty_set_room();
7238523.797774 | 0) 0.064 us | up_read();
7238523.797775 | 0) | schedule_timeout() {
7238523.797775 | 0) | schedule() {
7238523.797775 | 0) | __schedule() {
7238523.797776 | 0) 0.083 us | rcu_note_context_switch();
7238523.797776 | 0) 0.078 us | _raw_spin_lock_irq();
7238523.797777 | 0) | deactivate_task() {
7238523.797777 | 0) | dequeue_task() {
7238523.797777 | 0) 0.191 us | update_rq_clock();
7238523.797778 | 0) | dequeue_task_fair() {
7238523.797778 | 0) | dequeue_entity() {
7238523.797779 | 0) | update_curr() {
7238523.797779 | 0) 0.179 us | cpuacct_charge();
7238523.797780 | 0) 0.902 us | }
7238523.797780 | 0) 0.070 us | __update_entity_load_avg_contrib();
7238523.797781 | 0) 0.152 us | update_cfs_rq_blocked_load();
7238523.797781 | 0) 0.073 us | clear_buddies();
7238523.797782 | 0) 0.074 us | account_entity_dequeue();
7238523.797783 | 0) | update_cfs_shares() {
7238523.797783 | 0) 0.111 us | update_curr();
7238523.797783 | 0) 0.082 us | account_entity_dequeue();
7238523.797784 | 0) 0.081 us | account_entity_enqueue();
7238523.797785 | 0) 2.330 us | }
7238523.797785 | 0) 6.633 us | } /* dequeue_entity */
7238523.797786 | 0) | dequeue_entity() {
7238523.797786 | 0) 0.078 us | update_curr();
7238523.797787 | 0) 0.086 us | update_cfs_rq_blocked_load();
7238523.797787 | 0) 0.076 us | clear_buddies();
7238523.797788 | 0) 0.079 us | account_entity_dequeue();
7238523.797789 | 0) 0.074 us | update_cfs_shares();
7238523.797789 | 0) 3.287 us | }
7238523.797789 | 0) 0.074 us | hrtick_update();
7238523.797790 | 0) 11.606 us | }
7238523.797790 | 0) 12.879 us | }
7238523.797790 | 0) 13.406 us | }
7238523.797791 | 0) | pick_next_task_fair() {
7238523.797791 | 0) 0.073 us | check_cfs_rq_runtime();
7238523.797792 | 0) | pick_next_entity() {
7238523.797792 | 0) 0.076 us | clear_buddies();
7238523.797793 | 0) 0.663 us | }
7238523.797793 | 0) | put_prev_entity() {
7238523.797793 | 0) 0.076 us | check_cfs_rq_runtime();
7238523.797794 | 0) 0.598 us | }
7238523.797794 | 0) | put_prev_entity() {
7238523.797794 | 0) 0.078 us | check_cfs_rq_runtime();
7238523.797795 | 0) 0.618 us | }
7238523.797795 | 0) | set_next_entity() {
7238523.797795 | 0) 0.096 us | update_stats_wait_end();
7238523.797796 | 0) 0.738 us | }
7238523.797796 | 0) 5.222 us | }
7238523.797797 | 0) 0.078 us | paravirt_start_context_switch();
7238523.797798 | 0) 0.071 us | xen_read_cr0();
7238523.797799 | 0) | xen_write_cr0() {
7238523.797799 | 0) 0.078 us | paravirt_get_lazy_mode();
7238523.797800 | 0) 0.084 us | __xen_mc_entry();
7238523.797800 | 0) 0.076 us | paravirt_get_lazy_mode();
7238523.797801 | 0) 1.798 us | }
7238523.797801 | 0) | xen_load_sp0() {
7238523.797801 | 0) 0.080 us | paravirt_get_lazy_mode();
7238523.797802 | 0) 0.076 us | __xen_mc_entry();
7238523.797802 | 0) 0.073 us | paravirt_get_lazy_mode();
7238523.797803 | 0) 1.623 us | }
7238523.797803 | 0) | xen_load_tls() {
7238523.797803 | 0) 0.082 us | paravirt_get_lazy_mode();
7238523.797804 | 0) 0.084 us | paravirt_get_lazy_mode();
7238523.797804 | 0) 0.136 us | load_TLS_descriptor();
7238523.797805 | 0) 0.072 us | load_TLS_descriptor();
7238523.797806 | 0) 0.080 us | load_TLS_descriptor();
7238523.797806 | 0) 0.088 us | paravirt_get_lazy_mode();
7238523.797807 | 0) 3.360 us | }
7238523.797807 | 0) | xen_end_context_switch() {
7238523.797807 | 0) 0.601 us | xen_mc_flush();
7238523.797808 | 0) 0.098 us | paravirt_end_context_switch();
7238523.797809 | 0) 1.902 us | }
7238524.005649 | 0) | finish_task_switch() {
7238524.005653 | 0) | xen_evtchn_do_upcall() {
7238524.005653 | 0) | irq_enter() {
7238524.005653 | 0) 0.138 us | rcu_irq_enter();
7238524.005654 | 0) 0.753 us | }
7238524.005654 | 0) 0.056 us | exit_idle();
7238524.005655 | 0) | __xen_evtchn_do_upcall() {
7238524.005655 | 0) | evtchn_2l_handle_events() {
7238524.005655 | 0) 0.057 us | irq_from_virq();
7238524.005656 | 0) | evtchn_from_irq() {
7238524.005656 | 0) | irq_get_irq_data() {
7238524.005656 | 0) 0.050 us | irq_to_desc();
7238524.005656 | 0) 0.499 us | }
7238524.005657 | 0) 0.958 us | }
7238524.005657 | 0) | get_evtchn_to_irq() {
7238524.005657 | 0) 0.057 us | evtchn_2l_max_channels();
7238524.005658 | 0) 0.400 us | }
7238524.005659 | 0) | generic_handle_irq() {
7238524.005659 | 0) 0.052 us | irq_to_desc();
7238524.005659 | 0) | handle_percpu_irq() {
7238524.005659 | 0) | ack_dynirq() {
7238524.005659 | 0) | evtchn_from_irq() {
7238524.005660 | 0) | irq_get_irq_data() {
7238524.005660 | 0) 0.056 us | irq_to_desc();
7238524.005660 | 0) 0.439 us | }
7238524.005660 | 0) 0.739 us | }
7238524.005661 | 0) 0.051 us | irq_move_irq();
7238524.005661 | 0) 0.051 us | evtchn_2l_clear_pending();
7238524.005661 | 0) 1.963 us | }
7238524.005662 | 0) | handle_irq_event_percpu() {
7238524.005662 | 0) | xen_irq_work_interrupt() {
7238524.005662 | 0) | irq_enter() {
7238524.005662 | 0) 0.053 us | rcu_irq_enter();
7238524.005663 | 0) 0.392 us | }
7238524.005663 | 0) | __wake_up() {
7238524.005663 | 0) 0.058 us | _raw_spin_lock_irqsave();
7238524.005664 | 0) | __wake_up_common() {
7238524.005664 | 0) | autoremove_wake_function() {
7238524.005664 | 0) | default_wake_function() {
7238524.005665 | 0) | try_to_wake_up() {
7238524.005665 | 0) 0.226 us | _raw_spin_lock_irqsave();
7238524.005665 | 0) 0.392 us | task_waking_fair();
7238524.005666 | 0) | select_task_rq_fair() {
7238524.005666 | 0) 0.067 us | source_load();
7238524.005667 | 0) 0.057 us | target_load();
7238524.005667 | 0) 0.065 us | idle_cpu();
7238524.005668 | 0) 0.050 us | cpus_share_cache();
7238524.005668 | 0) 0.080 us | idle_cpu();
7238524.005668 | 0) 2.053 us | }
7238524.005669 | 0) 0.051 us | _raw_spin_lock();
7238524.005669 | 0) | ttwu_do_activate.constprop.124() {
7238524.005669 | 0) | activate_task() {
7238524.005669 | 0) | enqueue_task() {
7238524.005669 | 0) 0.165 us | update_rq_clock();
7238524.005670 | 0) | enqueue_task_fair() {
7238524.005670 | 0) | enqueue_entity() {
7238524.005670 | 0) 0.065 us | update_curr();
7238524.005671 | 0) 0.078 us | __compute_runnable_contrib.part.51();
7238524.005671 | 0) 0.070 us | __update_entity_load_avg_contrib();
7238524.005671 | 0) 0.051 us | update_cfs_rq_blocked_load();
7238524.005672 | 0) 0.069 us | account_entity_enqueue();
7238524.005672 | 0) 0.132 us | update_cfs_shares();
7238524.005673 | 0) 0.054 us | place_entity();
7238524.005673 | 0) 0.081 us | __enqueue_entity();
7238524.005673 | 0) 3.111 us | }
7238524.005673 | 0) | enqueue_entity() {
7238524.005674 | 0) 0.059 us | update_curr();
7238524.005674 | 0) 0.057 us | update_cfs_rq_blocked_load();
7238524.005674 | 0) 0.067 us | account_entity_enqueue();
7238524.005675 | 0) 0.082 us | update_cfs_shares();
7238524.005675 | 0) 0.120 us | place_entity();
7238524.005675 | 0) 0.051 us | __enqueue_entity();
7238524.005676 | 0) 2.075 us | }
7238524.005676 | 0) 0.049 us | hrtick_update();
7238524.005676 | 0) 6.167 us | }
7238524.005676 | 0) 6.979 us | }
7238524.005676 | 0) 7.317 us | }
7238524.005677 | 0) | ttwu_do_wakeup() {
7238524.005677 | 0) | check_preempt_curr() {
7238524.005677 | 0) | resched_task() {
7238524.005677 | 0) | xen_smp_send_reschedule() {
7238524.005677 | 0) | xen_send_IPI_one() {
7238524.005678 | 0) | notify_remote_via_irq() {
7238524.005678 | 0) | evtchn_from_irq() {
7238524.005678 | 0) | irq_get_irq_data() {
7238524.005678 | 0) 0.051 us | irq_to_desc();
7238524.005679 | 0) 0.545 us | }
7238524.005679 | 0) 0.910 us | }
7238524.005680 | 0) 1.962 us | } /* notify_remote_via_irq */
7238524.005680 | 0) 2.332 us | }
7238524.005680 | 0) 2.684 us | }
7238524.005681 | 0) 3.606 us | }
7238524.005681 | 0) 4.064 us | }
7238524.005682 | 0) 5.129 us | }
7238524.005682 | 0) 13.194 us | }
7238524.005683 | 0) 0.066 us | _raw_spin_unlock();
7238524.005683 | 0) 0.165 us | ttwu_stat();
7238524.005684 | 0) 0.070 us | _raw_spin_unlock_irqrestore();
7238524.005684 | 0) 19.634 us | }
7238524.005685 | 0) 20.080 us | }
7238524.005685 | 0) 20.608 us | }
7238524.005685 | 0) 21.348 us | }
7238524.005685 | 0) 0.084 us | _raw_spin_unlock_irqrestore();
7238524.005686 | 0) 22.728 us | }
7238524.005686 | 0) | irq_exit() {
7238524.005687 | 0) 0.077 us | idle_cpu();
7238524.005687 | 0) 0.093 us | rcu_irq_exit();
7238524.005688 | 0) 1.101 us | }
7238524.005688 | 0) 25.644 us | }
7238524.005688 | 0) 0.138 us | add_interrupt_randomness();
7238524.005689 | 0) 0.083 us | note_interrupt();
7238524.005689 | 0) 27.672 us | }
7238524.005690 | 0) 30.410 us | }
7238524.005690 | 0) 31.458 us | }
7238524.005690 | 0) 35.276 us | }
7238524.005691 | 0) 35.797 us | }
7238524.005691 | 0) | irq_exit() {
7238524.005691 | 0) 0.066 us | idle_cpu();
7238524.005692 | 0) 0.080 us | rcu_irq_exit();
7238524.005692 | 0) 1.110 us | }
7238524.005693 | 0) 39.440 us | }
7238524.005693 | 0) 41.142 us | }
7238524.005694 | 0) 207918.1 us | }
7238524.005694 | 0) 207918.7 us | }
7238524.005694 | 0) 207919.4 us | }
7238524.005695 | 0) 0.068 us | down_read();
7238524.005696 | 0) | copy_from_read_buf() {
7238524.005697 | 0) | tty_audit_add_data() {
7238524.005697 | 0) 0.233 us | _raw_spin_lock_irqsave();
7238524.005698 | 0) 0.076 us | _raw_spin_unlock_irqrestore();
7238524.005699 | 0) 0.076 us | _raw_spin_lock_irqsave();
7238524.005699 | 0) 0.078 us | _raw_spin_unlock_irqrestore();
7238524.005700 | 0) 2.696 us | }
7238524.005700 | 0) 4.335 us | }
7238524.005701 | 0) 0.086 us | copy_from_read_buf();
7238524.005701 | 0) 0.074 us | n_tty_set_room();
7238524.005702 | 0) 0.085 us | n_tty_write_wakeup();
7238524.005702 | 0) | __wake_up() {
7238524.005703 | 0) 0.061 us | _raw_spin_lock_irqsave();
7238524.005703 | 0) | __wake_up_common() {
7238524.005703 | 0) 0.080 us | pollwake();
7238524.005704 | 0) 0.687 us | }
7238524.005704 | 0) 0.063 us | _raw_spin_unlock_irqrestore();
7238524.005705 | 0) 2.040 us | }
7238524.005705 | 0) 0.071 us | n_tty_set_room();
7238524.005706 | 0) 0.074 us | up_read();
7238524.005706 | 0) | remove_wait_queue() {
7238524.005706 | 0) 0.074 us | _raw_spin_lock_irqsave();
7238524.005707 | 0) 0.069 us | _raw_spin_unlock_irqrestore();
7238524.005707 | 0) 1.076 us | }
7238524.005708 | 0) 0.139 us | mutex_unlock();
7238524.005708 | 0) 207939.0 us | }
7238524.005709 | 0) | tty_ldisc_deref() {
7238524.005709 | 0) 0.077 us | ldsem_up_read();
7238524.005710 | 0) 0.702 us | }
7238524.005710 | 0) 0.068 us | get_seconds();
7238524.005711 | 0) 207943.4 us | }
7238524.005712 | 0) 0.301 us | __fsnotify_parent();
7238524.005713 | 0) 0.157 us | fsnotify();
7238524.005713 | 0) 207950.3 us | }
7238524.005783 | 0) | vfs_read() {
7238524.005784 | 0) | rw_verify_area() {
7238524.005784 | 0) | security_file_permission() {
7238524.005785 | 0) | apparmor_file_permission() {
7238524.005785 | 0) 0.164 us | common_file_perm();
7238524.005786 | 0) 0.790 us | }
7238524.005786 | 0) 0.080 us | __fsnotify_parent();
7238524.005787 | 0) 0.094 us | fsnotify();
7238524.005787 | 0) 2.683 us | }
7238524.005788 | 0) 3.313 us | }
7238524.005788 | 0) | tty_read() {
7238524.005788 | 0) 0.087 us | tty_paranoia_check();
7238524.005789 | 0) | tty_ldisc_ref_wait() {
7238524.005789 | 0) 0.080 us | ldsem_down_read();
7238524.005790 | 0) 0.683 us | }
7238524.005790 | 0) | n_tty_read() {
7238524.005791 | 0) 0.080 us | _raw_spin_lock_irq();
7238524.005791 | 0) 0.104 us | mutex_lock_interruptible();
7238524.005792 | 0) 0.070 us | down_read();
7238524.005792 | 0) | add_wait_queue() {
7238524.005793 | 0) 0.079 us | _raw_spin_lock_irqsave();
7238524.005793 | 0) 0.087 us | _raw_spin_unlock_irqrestore();
7238524.005794 | 0) 1.147 us | }
7238524.005794 | 0) 0.078 us | tty_hung_up_p();
7238524.005795 | 0) 0.071 us | n_tty_set_room();
7238524.005795 | 0) 0.077 us | up_read();
7238524.005796 | 0) | schedule_timeout() {
7238524.005796 | 0) | schedule() {
7238524.005796 | 0) | __schedule() {
7238524.005797 | 0) 0.087 us | rcu_note_context_switch();
7238524.005797 | 0) 0.075 us | _raw_spin_lock_irq();
7238524.005798 | 0) | deactivate_task() {
7238524.005798 | 0) | dequeue_task() {
7238524.005798 | 0) 0.177 us | update_rq_clock();
7238524.005799 | 0) | dequeue_task_fair() {
7238524.005799 | 0) | dequeue_entity() {
7238524.005800 | 0) | update_curr() {
7238524.005800 | 0) 0.334 us | cpuacct_charge();
7238524.005801 | 0) 1.199 us | }
7238524.005802 | 0) 0.081 us | __update_entity_load_avg_contrib();
7238524.005802 | 0) 0.064 us | update_cfs_rq_blocked_load();
7238524.005803 | 0) 0.076 us | clear_buddies();
7238524.005803 | 0) 0.079 us | account_entity_dequeue();