# tracer: function_graph
#
# CPU  DURATION                  FUNCTION CALLS
# |     |   |                     |   |   |   |
  6)               |  __x64_sys_process_vm_readv() {
  6)               |    irq_enter_rcu() {
  6)   0.872 us    |      irqtime_account_irq();
  6)   2.805 us    |    }
  6)               |    __sysvec_irq_work() {
  6)               |      __wake_up() {
  6)   0.651 us    |        _raw_spin_lock_irqsave();
  6)               |        __wake_up_common() {
  6)               |          pollwake() {
  6)               |            default_wake_function() {
  6)               |              try_to_wake_up() {
  6)   0.651 us    |                _raw_spin_lock_irqsave();
  6)               |                select_task_rq_fair() {
  6)   0.662 us    |                  __rcu_read_lock();
  6)   0.741 us    |                  available_idle_cpu();
  6)   0.661 us    |                  cpus_share_cache();
  6)   0.691 us    |                  available_idle_cpu();
  6)   0.662 us    |                  __rcu_read_unlock();
  6)   7.174 us    |                }
  6)               |                set_task_cpu() {
  6)               |                  migrate_task_rq_fair() {
  6)               |                    remove_entity_load_avg() {
  6)   0.671 us    |                      __update_load_avg_blocked_se();
  6)   0.661 us    |                      _raw_spin_lock_irqsave();
  6)   0.652 us    |                      _raw_spin_unlock_irqrestore();
  6)   4.289 us    |                    }
  6)   0.651 us    |                    __rcu_read_lock();
  6)   0.651 us    |                    __rcu_read_unlock();
  6)   7.975 us    |                  }
  6)   0.682 us    |                  set_task_rq_fair();
  6) + 10.540 us   |                }
  6)               |                ttwu_queue_wakelist() {
  6)               |                  __smp_call_single_queue() {
  6)   0.782 us    |                    call_function_single_prep_ipi();
  6)               |                    native_send_call_func_single_ipi() {
  6)   0.681 us    |                      default_send_IPI_single_phys();
  6)   1.843 us    |                    }
  6)   4.458 us    |                  }
  6)   5.760 us    |                }
  6)   0.662 us    |                _raw_spin_unlock_irqrestore();
  6) + 28.323 us   |              }
  6) + 29.506 us   |            }
  6) + 30.748 us   |          }
  6) + 32.150 us   |        }
  6)   0.651 us    |        _raw_spin_unlock_irqrestore();
  6) + 35.827 us   |      }
  6) + 37.361 us   |    }
  6)               |    irq_exit_rcu() {
  6)   0.751 us    |      irqtime_account_irq();
  6)   0.672 us    |      sched_core_idle_cpu();
  6)   3.226 us    |    }
  6)               |    process_vm_rw() {
  6)               |      process_vm_rw_core.constprop.0() {
  6)               |        find_get_task_by_vpid() {
  6)   0.661 us    |          __rcu_read_lock();
  6)   0.671 us    |          __rcu_read_unlock();
  6)   3.306 us    |        }
  6)               |        mm_access() {
  6)               |          down_read_killable() {
  6)   0.651 us    |            __cond_resched();
  6)   1.883 us    |          }
  6)   0.662 us    |          _raw_spin_lock();
  6)   0.651 us    |          _raw_spin_unlock();
  6)               |          ptrace_may_access() {
  6)   0.651 us    |            _raw_spin_lock();
  6)               |            __ptrace_may_access() {
  6)   0.661 us    |              __rcu_read_lock();
  6)               |              ns_capable() {
  6)               |                security_capable() {
  6)   0.651 us    |                  cap_capable();
  6)   0.651 us    |                  bpf_lsm_capable();
  6)   3.065 us    |                }
  6)   4.278 us    |              }
  6)   0.632 us    |              __rcu_read_unlock();
  6)               |              security_ptrace_access_check() {
  6)               |                cap_ptrace_access_check() {
  6)   0.641 us    |                  __rcu_read_lock();
  6)   0.652 us    |                  __rcu_read_unlock();
  6)   3.056 us    |                }
  6)   0.651 us    |                hook_ptrace_access_check();
  6)               |                yama_ptrace_access_check() {
  6)   0.641 us    |                  __rcu_read_lock();
  6)               |                  task_is_descendant() {
  6)   0.651 us    |                    __rcu_read_lock();
  6)   0.682 us    |                    __rcu_read_unlock();
  6)   3.236 us    |                  }
  6)   0.661 us    |                  __rcu_read_lock();
  6)               |                    irq_enter_rcu() {
  6)   0.741 us    |                      irqtime_account_irq();
  6)   2.044 us    |                    }
  6)               |                    __sysvec_irq_work() {
  6)               |                      __wake_up() {
  6)   0.661 us    |                        _raw_spin_lock_irqsave();
  6)   0.691 us    |                        __wake_up_common();
  6)   0.652 us    |                        _raw_spin_unlock_irqrestore();
  6)   4.298 us    |                      }
  6)   5.731 us    |                    }
  6)               |                    irq_exit_rcu() {
  6)   0.762 us    |                      irqtime_account_irq();
  6)   0.721 us    |                      sched_core_idle_cpu();
  6)   3.216 us    |                    }
  6)   0.672 us    |                  __rcu_read_unlock();
  6)   0.681 us    |                  __rcu_read_unlock();
  6) + 24.025 us   |                }
  6)   0.672 us    |                bpf_lsm_ptrace_access_check();
  6) + 31.369 us   |              }
  6) + 40.506 us   |            }
  6)   0.661 us    |            _raw_spin_unlock();
  6) + 44.263 us   |          }
  6)   0.662 us    |          up_read();
  6) + 51.627 us   |        }
  6)               |        down_read() {
  6)   0.651 us    |          __cond_resched();
  6)   1.963 us    |        }
  6)               |        pin_user_pages_remote() {
  6)               |          __gup_longterm_locked() {
  6)               |            __get_user_pages() {
  6)               |              gup_vma_lookup() {
  6)               |                find_vma() {
  6)   0.652 us    |                  __rcu_read_lock();
  6)   0.671 us    |                  __rcu_read_unlock();
  6)   3.306 us    |                }
  6)   4.508 us    |              }
  6)               |              check_vma_flags() {
  6)   0.821 us    |                vma_is_secretmem();
  6)   2.174 us    |              }
  6)   0.661 us    |              __cond_resched();
  6)   0.972 us    |              vma_pgtable_walk_begin();
  6)               |              follow_page_pte() {
  6)               |                __pte_offset_map_lock() {
  6)               |                  __pte_offset_map() {
  6)   0.651 us    |                    __rcu_read_lock();
  6)   1.864 us    |                  }
  6)   0.651 us    |                  _raw_spin_lock();
  6)   4.268 us    |                }
  6)   0.682 us    |                vm_normal_page();
  6)               |                try_grab_folio() {
  6)   0.671 us    |                  mod_node_page_state();
  6)   2.063 us    |                }
  6)               |                mark_page_accessed() {
  6)   0.651 us    |                  folio_mark_accessed();
  6)   1.834 us    |                }
  6)   0.651 us    |                _raw_spin_unlock();
  6)   0.651 us    |                __rcu_read_unlock();
  6) + 14.126 us   |              }
  6)   0.642 us    |              vma_pgtable_walk_end();
  6) + 27.231 us   |            }
  6) + 28.714 us   |          }
  6) + 29.966 us   |        }
  6)   0.662 us    |        up_read();
  6)               |        unpin_user_pages_dirty_lock() {
  6)               |          unpin_user_pages() {
  6)               |            gup_put_folio() {
  6)   0.652 us    |              mod_node_page_state();
  6)   1.904 us    |            }
  6)   3.276 us    |          }
  6)   4.589 us    |        }
  6)               |        mmput() {
  6)   0.651 us    |          __cond_resched();
  6)   1.833 us    |        }
  6) + 99.407 us   |      }
  6)   0.671 us    |      kfree();
  6) ! 102.913 us  |    }
  6) ! 152.927 us  |  }