website-struct

Struct: rcu_state

Status

Regular

• In 4.4: ✅

  struct rcu_state {
      struct rcu_node node[5];
      struct rcu_node * level[3];
      u8 flavor_mask;
      struct rcu_data *rda;
      call_rcu_func_t call;
      int ncpus;
      u8 boost;
      long unsigned int gpnum;
      long unsigned int completed;
      struct task_struct *gp_kthread;
      wait_queue_head_t gp_wq;
      short int gp_flags;
      short int gp_state;
      raw_spinlock_t orphan_lock;
      struct callback_head *orphan_nxtlist;
      struct callback_head **orphan_nxttail;
      struct callback_head *orphan_donelist;
      struct callback_head **orphan_donetail;
      long int qlen_lazy;
      long int qlen;
      struct mutex barrier_mutex;
      atomic_t barrier_cpu_count;
      struct completion barrier_completion;
      long unsigned int barrier_sequence;
      long unsigned int expedited_sequence;
      atomic_long_t expedited_workdone0;
      atomic_long_t expedited_workdone1;
      atomic_long_t expedited_workdone2;
      atomic_long_t expedited_workdone3;
      atomic_long_t expedited_normal;
      atomic_t expedited_need_qs;
      wait_queue_head_t expedited_wq;
      int ncpus_snap;
      long unsigned int jiffies_force_qs;
      long unsigned int n_force_qs;
      long unsigned int n_force_qs_lh;
      long unsigned int n_force_qs_ngp;
      long unsigned int gp_start;
      long unsigned int gp_activity;
      long unsigned int jiffies_stall;
      long unsigned int jiffies_resched;
      long unsigned int n_force_qs_gpstart;
      long unsigned int gp_max;
      const char *name;
      char abbr;
      struct list_head flavors;
  };
  

• In 4.8: ✅

  struct rcu_state {
      struct rcu_node node[5];
      struct rcu_node * level[3];
      u8 flavor_mask;
      struct rcu_data *rda;
      call_rcu_func_t call;
      int ncpus;
      u8 boost;
      long unsigned int gpnum;
      long unsigned int completed;
      struct task_struct *gp_kthread;
      struct swait_queue_head gp_wq;
      short int gp_flags;
      short int gp_state;
      raw_spinlock_t orphan_lock;
      struct callback_head *orphan_nxtlist;
      struct callback_head **orphan_nxttail;
      struct callback_head *orphan_donelist;
      struct callback_head **orphan_donetail;
      long int qlen_lazy;
      long int qlen;
      struct mutex barrier_mutex;
      atomic_t barrier_cpu_count;
      struct completion barrier_completion;
      long unsigned int barrier_sequence;
      struct mutex exp_mutex;
      struct mutex exp_wake_mutex;
      long unsigned int expedited_sequence;
      atomic_long_t expedited_normal;
      atomic_t expedited_need_qs;
      struct swait_queue_head expedited_wq;
      int ncpus_snap;
      long unsigned int jiffies_force_qs;
      long unsigned int jiffies_kick_kthreads;
      long unsigned int n_force_qs;
      long unsigned int n_force_qs_lh;
      long unsigned int n_force_qs_ngp;
      long unsigned int gp_start;
      long unsigned int gp_activity;
      long unsigned int jiffies_stall;
      long unsigned int jiffies_resched;
      long unsigned int n_force_qs_gpstart;
      long unsigned int gp_max;
      const char *name;
      char abbr;
      struct list_head flavors;
  };
  

• In 4.10: ✅

  struct rcu_state {
      struct rcu_node node[131];
      struct rcu_node * level[4];
      u8 flavor_mask;
      struct rcu_data *rda;
      call_rcu_func_t call;
      int ncpus;
      u8 boost;
      long unsigned int gpnum;
      long unsigned int completed;
      struct task_struct *gp_kthread;
      struct swait_queue_head gp_wq;
      short int gp_flags;
      short int gp_state;
      raw_spinlock_t orphan_lock;
      struct callback_head *orphan_nxtlist;
      struct callback_head **orphan_nxttail;
      struct callback_head *orphan_donelist;
      struct callback_head **orphan_donetail;
      long int qlen_lazy;
      long int qlen;
      struct mutex barrier_mutex;
      atomic_t barrier_cpu_count;
      struct completion barrier_completion;
      long unsigned int barrier_sequence;
      struct mutex exp_mutex;
      struct mutex exp_wake_mutex;
      long unsigned int expedited_sequence;
      atomic_long_t expedited_normal;
      atomic_t expedited_need_qs;
      struct swait_queue_head expedited_wq;
      int ncpus_snap;
      long unsigned int jiffies_force_qs;
      long unsigned int jiffies_kick_kthreads;
      long unsigned int n_force_qs;
      long unsigned int n_force_qs_lh;
      long unsigned int n_force_qs_ngp;
      long unsigned int gp_start;
      long unsigned int gp_activity;
      long unsigned int jiffies_stall;
      long unsigned int jiffies_resched;
      long unsigned int n_force_qs_gpstart;
      long unsigned int gp_max;
      const char *name;
      char abbr;
      struct list_head flavors;
  };
  

• In 4.13: ✅

  struct rcu_state {
      struct rcu_node node[521];
      struct rcu_node * level[4];
      struct rcu_data *rda;
      call_rcu_func_t call;
      int ncpus;
      u8 boost;
      long unsigned int gpnum;
      long unsigned int completed;
      struct task_struct *gp_kthread;
      struct swait_queue_head gp_wq;
      short int gp_flags;
      short int gp_state;
      raw_spinlock_t orphan_lock;
      struct rcu_cblist orphan_pend;
      struct rcu_cblist orphan_done;
      struct mutex barrier_mutex;
      atomic_t barrier_cpu_count;
      struct completion barrier_completion;
      long unsigned int barrier_sequence;
      struct mutex exp_mutex;
      struct mutex exp_wake_mutex;
      long unsigned int expedited_sequence;
      atomic_t expedited_need_qs;
      struct swait_queue_head expedited_wq;
      int ncpus_snap;
      long unsigned int jiffies_force_qs;
      long unsigned int jiffies_kick_kthreads;
      long unsigned int n_force_qs;
      long unsigned int n_force_qs_lh;
      long unsigned int n_force_qs_ngp;
      long unsigned int gp_start;
      long unsigned int gp_activity;
      long unsigned int jiffies_stall;
      long unsigned int jiffies_resched;
      long unsigned int n_force_qs_gpstart;
      long unsigned int gp_max;
      const char *name;
      char abbr;
      struct list_head flavors;
  };
  

• In 4.15: ✅

  struct rcu_state {
      struct rcu_node node[521];
      struct rcu_node * level[4];
      struct rcu_data *rda;
      call_rcu_func_t call;
      int ncpus;
      u8 boost;
      long unsigned int gpnum;
      long unsigned int completed;
      struct task_struct *gp_kthread;
      struct swait_queue_head gp_wq;
      short int gp_flags;
      short int gp_state;
      struct mutex barrier_mutex;
      atomic_t barrier_cpu_count;
      struct completion barrier_completion;
      long unsigned int barrier_sequence;
      struct mutex exp_mutex;
      struct mutex exp_wake_mutex;
      long unsigned int expedited_sequence;
      atomic_t expedited_need_qs;
      struct swait_queue_head expedited_wq;
      int ncpus_snap;
      long unsigned int jiffies_force_qs;
      long unsigned int jiffies_kick_kthreads;
      long unsigned int n_force_qs;
      long unsigned int n_force_qs_lh;
      long unsigned int n_force_qs_ngp;
      long unsigned int gp_start;
      long unsigned int gp_activity;
      long unsigned int jiffies_stall;
      long unsigned int jiffies_resched;
      long unsigned int n_force_qs_gpstart;
      long unsigned int gp_max;
      const char *name;
      char abbr;
      struct list_head flavors;
  };
  

• In 4.18: ✅

  struct rcu_state {
      struct rcu_node node[521];
      struct rcu_node * level[4];
      struct rcu_data *rda;
      call_rcu_func_t call;
      int ncpus;
      u8 boost;
      long unsigned int gpnum;
      long unsigned int completed;
      struct task_struct *gp_kthread;
      struct swait_queue_head gp_wq;
      short int gp_flags;
      short int gp_state;
      struct mutex barrier_mutex;
      atomic_t barrier_cpu_count;
      struct completion barrier_completion;
      long unsigned int barrier_sequence;
      struct mutex exp_mutex;
      struct mutex exp_wake_mutex;
      long unsigned int expedited_sequence;
      atomic_t expedited_need_qs;
      struct swait_queue_head expedited_wq;
      int ncpus_snap;
      long unsigned int jiffies_force_qs;
      long unsigned int jiffies_kick_kthreads;
      long unsigned int n_force_qs;
      long unsigned int gp_start;
      long unsigned int gp_activity;
      long unsigned int jiffies_stall;
      long unsigned int jiffies_resched;
      long unsigned int n_force_qs_gpstart;
      long unsigned int gp_max;
      const char *name;
      char abbr;
      struct list_head flavors;
  };
  

• In 5.0: ✅

  struct rcu_state {
      struct rcu_node node[521];
      struct rcu_node * level[4];
      int ncpus;
      u8 boost;
      long unsigned int gp_seq;
      struct task_struct *gp_kthread;
      struct swait_queue_head gp_wq;
      short int gp_flags;
      short int gp_state;
      struct mutex barrier_mutex;
      atomic_t barrier_cpu_count;
      struct completion barrier_completion;
      long unsigned int barrier_sequence;
      struct mutex exp_mutex;
      struct mutex exp_wake_mutex;
      long unsigned int expedited_sequence;
      atomic_t expedited_need_qs;
      struct swait_queue_head expedited_wq;
      int ncpus_snap;
      long unsigned int jiffies_force_qs;
      long unsigned int jiffies_kick_kthreads;
      long unsigned int n_force_qs;
      long unsigned int gp_start;
      long unsigned int gp_end;
      long unsigned int gp_activity;
      long unsigned int gp_req_activity;
      long unsigned int jiffies_stall;
      long unsigned int jiffies_resched;
      long unsigned int n_force_qs_gpstart;
      long unsigned int gp_max;
      const char *name;
      char abbr;
      raw_spinlock_t ofl_lock;
  };
  

• In 5.3: ✅

  struct rcu_state {
      struct rcu_node node[521];
      struct rcu_node * level[4];
      int ncpus;
      u8 boost;
      long unsigned int gp_seq;
      struct task_struct *gp_kthread;
      struct swait_queue_head gp_wq;
      short int gp_flags;
      short int gp_state;
      long unsigned int gp_wake_time;
      long unsigned int gp_wake_seq;
      struct mutex barrier_mutex;
      atomic_t barrier_cpu_count;
      struct completion barrier_completion;
      long unsigned int barrier_sequence;
      struct mutex exp_mutex;
      struct mutex exp_wake_mutex;
      long unsigned int expedited_sequence;
      atomic_t expedited_need_qs;
      struct swait_queue_head expedited_wq;
      int ncpus_snap;
      long unsigned int jiffies_force_qs;
      long unsigned int jiffies_kick_kthreads;
      long unsigned int n_force_qs;
      long unsigned int gp_start;
      long unsigned int gp_end;
      long unsigned int gp_activity;
      long unsigned int gp_req_activity;
      long unsigned int jiffies_stall;
      long unsigned int jiffies_resched;
      long unsigned int n_force_qs_gpstart;
      long unsigned int gp_max;
      const char *name;
      char abbr;
      raw_spinlock_t ofl_lock;
  };
  

• In 5.4: ✅

  struct rcu_state {
      struct rcu_node node[521];
      struct rcu_node * level[4];
      int ncpus;
      u8 boost;
      long unsigned int gp_seq;
      struct task_struct *gp_kthread;
      struct swait_queue_head gp_wq;
      short int gp_flags;
      short int gp_state;
      long unsigned int gp_wake_time;
      long unsigned int gp_wake_seq;
      struct mutex barrier_mutex;
      atomic_t barrier_cpu_count;
      struct completion barrier_completion;
      long unsigned int barrier_sequence;
      struct mutex exp_mutex;
      struct mutex exp_wake_mutex;
      long unsigned int expedited_sequence;
      atomic_t expedited_need_qs;
      struct swait_queue_head expedited_wq;
      int ncpus_snap;
      long unsigned int jiffies_force_qs;
      long unsigned int jiffies_kick_kthreads;
      long unsigned int n_force_qs;
      long unsigned int gp_start;
      long unsigned int gp_end;
      long unsigned int gp_activity;
      long unsigned int gp_req_activity;
      long unsigned int jiffies_stall;
      long unsigned int jiffies_resched;
      long unsigned int n_force_qs_gpstart;
      long unsigned int gp_max;
      const char *name;
      char abbr;
      raw_spinlock_t ofl_lock;
  };
  

• In 5.8: ✅

  struct rcu_state {
      struct rcu_node node[521];
      struct rcu_node * level[4];
      int ncpus;
      u8 boost;
      long unsigned int gp_seq;
      struct task_struct *gp_kthread;
      struct swait_queue_head gp_wq;
      short int gp_flags;
      short int gp_state;
      long unsigned int gp_wake_time;
      long unsigned int gp_wake_seq;
      struct mutex barrier_mutex;
      atomic_t barrier_cpu_count;
      struct completion barrier_completion;
      long unsigned int barrier_sequence;
      struct mutex exp_mutex;
      struct mutex exp_wake_mutex;
      long unsigned int expedited_sequence;
      atomic_t expedited_need_qs;
      struct swait_queue_head expedited_wq;
      int ncpus_snap;
      u8 cbovld;
      u8 cbovldnext;
      long unsigned int jiffies_force_qs;
      long unsigned int jiffies_kick_kthreads;
      long unsigned int n_force_qs;
      long unsigned int gp_start;
      long unsigned int gp_end;
      long unsigned int gp_activity;
      long unsigned int gp_req_activity;
      long unsigned int jiffies_stall;
      long unsigned int jiffies_resched;
      long unsigned int n_force_qs_gpstart;
      long unsigned int gp_max;
      const char *name;
      char abbr;
      raw_spinlock_t ofl_lock;
  };
  

• In 5.11: ✅

  struct rcu_state {
      struct rcu_node node[521];
      struct rcu_node * level[4];
      int ncpus;
      int n_online_cpus;
      u8 boost;
      long unsigned int gp_seq;
      long unsigned int gp_max;
      struct task_struct *gp_kthread;
      struct swait_queue_head gp_wq;
      short int gp_flags;
      short int gp_state;
      long unsigned int gp_wake_time;
      long unsigned int gp_wake_seq;
      struct mutex barrier_mutex;
      atomic_t barrier_cpu_count;
      struct completion barrier_completion;
      long unsigned int barrier_sequence;
      struct mutex exp_mutex;
      struct mutex exp_wake_mutex;
      long unsigned int expedited_sequence;
      atomic_t expedited_need_qs;
      struct swait_queue_head expedited_wq;
      int ncpus_snap;
      u8 cbovld;
      u8 cbovldnext;
      long unsigned int jiffies_force_qs;
      long unsigned int jiffies_kick_kthreads;
      long unsigned int n_force_qs;
      long unsigned int gp_start;
      long unsigned int gp_end;
      long unsigned int gp_activity;
      long unsigned int gp_req_activity;
      long unsigned int jiffies_stall;
      long unsigned int jiffies_resched;
      long unsigned int n_force_qs_gpstart;
      const char *name;
      char abbr;
      raw_spinlock_t ofl_lock;
  };
  

• In 5.13: ✅

  struct rcu_state {
      struct rcu_node node[521];
      struct rcu_node * level[4];
      int ncpus;
      int n_online_cpus;
      u8 boost;
      long unsigned int gp_seq;
      long unsigned int gp_max;
      struct task_struct *gp_kthread;
      struct swait_queue_head gp_wq;
      short int gp_flags;
      short int gp_state;
      long unsigned int gp_wake_time;
      long unsigned int gp_wake_seq;
      struct mutex barrier_mutex;
      atomic_t barrier_cpu_count;
      struct completion barrier_completion;
      long unsigned int barrier_sequence;
      struct mutex exp_mutex;
      struct mutex exp_wake_mutex;
      long unsigned int expedited_sequence;
      atomic_t expedited_need_qs;
      struct swait_queue_head expedited_wq;
      int ncpus_snap;
      u8 cbovld;
      u8 cbovldnext;
      long unsigned int jiffies_force_qs;
      long unsigned int jiffies_kick_kthreads;
      long unsigned int n_force_qs;
      long unsigned int gp_start;
      long unsigned int gp_end;
      long unsigned int gp_activity;
      long unsigned int gp_req_activity;
      long unsigned int jiffies_stall;
      long unsigned int jiffies_resched;
      long unsigned int n_force_qs_gpstart;
      const char *name;
      char abbr;
      raw_spinlock_t ofl_lock;
  };
  

• In 5.15: ✅

  struct rcu_state {
      struct rcu_node node[521];
      struct rcu_node * level[4];
      int ncpus;
      int n_online_cpus;
      u8 boost;
      long unsigned int gp_seq;
      long unsigned int gp_max;
      struct task_struct *gp_kthread;
      struct swait_queue_head gp_wq;
      short int gp_flags;
      short int gp_state;
      long unsigned int gp_wake_time;
      long unsigned int gp_wake_seq;
      struct mutex barrier_mutex;
      atomic_t barrier_cpu_count;
      struct completion barrier_completion;
      long unsigned int barrier_sequence;
      struct mutex exp_mutex;
      struct mutex exp_wake_mutex;
      long unsigned int expedited_sequence;
      atomic_t expedited_need_qs;
      struct swait_queue_head expedited_wq;
      int ncpus_snap;
      u8 cbovld;
      u8 cbovldnext;
      long unsigned int jiffies_force_qs;
      long unsigned int jiffies_kick_kthreads;
      long unsigned int n_force_qs;
      long unsigned int gp_start;
      long unsigned int gp_end;
      long unsigned int gp_activity;
      long unsigned int gp_req_activity;
      long unsigned int jiffies_stall;
      long unsigned int jiffies_resched;
      long unsigned int n_force_qs_gpstart;
      const char *name;
      char abbr;
      raw_spinlock_t ofl_lock;
  };
  

• In 5.19: ✅

  struct rcu_state {
      struct rcu_node node[521];
      struct rcu_node * level[4];
      int ncpus;
      int n_online_cpus;
      long unsigned int gp_seq;
      long unsigned int gp_max;
      struct task_struct *gp_kthread;
      struct swait_queue_head gp_wq;
      short int gp_flags;
      short int gp_state;
      long unsigned int gp_wake_time;
      long unsigned int gp_wake_seq;
      struct mutex barrier_mutex;
      atomic_t barrier_cpu_count;
      struct completion barrier_completion;
      long unsigned int barrier_sequence;
      raw_spinlock_t barrier_lock;
      struct mutex exp_mutex;
      struct mutex exp_wake_mutex;
      long unsigned int expedited_sequence;
      atomic_t expedited_need_qs;
      struct swait_queue_head expedited_wq;
      int ncpus_snap;
      u8 cbovld;
      u8 cbovldnext;
      long unsigned int jiffies_force_qs;
      long unsigned int jiffies_kick_kthreads;
      long unsigned int n_force_qs;
      long unsigned int gp_start;
      long unsigned int gp_end;
      long unsigned int gp_activity;
      long unsigned int gp_req_activity;
      long unsigned int jiffies_stall;
      long unsigned int jiffies_resched;
      long unsigned int n_force_qs_gpstart;
      const char *name;
      char abbr;
      arch_spinlock_t ofl_lock;
      int nocb_is_setup;
  };
  

• In 6.2: ✅

  struct rcu_state {
      struct rcu_node node[521];
      struct rcu_node * level[4];
      int ncpus;
      int n_online_cpus;
      long unsigned int gp_seq;
      long unsigned int gp_max;
      struct task_struct *gp_kthread;
      struct swait_queue_head gp_wq;
      short int gp_flags;
      short int gp_state;
      long unsigned int gp_wake_time;
      long unsigned int gp_wake_seq;
      long unsigned int gp_seq_polled;
      long unsigned int gp_seq_polled_snap;
      long unsigned int gp_seq_polled_exp_snap;
      struct mutex barrier_mutex;
      atomic_t barrier_cpu_count;
      struct completion barrier_completion;
      long unsigned int barrier_sequence;
      raw_spinlock_t barrier_lock;
      struct mutex exp_mutex;
      struct mutex exp_wake_mutex;
      long unsigned int expedited_sequence;
      atomic_t expedited_need_qs;
      struct swait_queue_head expedited_wq;
      int ncpus_snap;
      u8 cbovld;
      u8 cbovldnext;
      long unsigned int jiffies_force_qs;
      long unsigned int jiffies_kick_kthreads;
      long unsigned int n_force_qs;
      long unsigned int gp_start;
      long unsigned int gp_end;
      long unsigned int gp_activity;
      long unsigned int gp_req_activity;
      long unsigned int jiffies_stall;
      long unsigned int jiffies_resched;
      long unsigned int n_force_qs_gpstart;
      const char *name;
      char abbr;
      arch_spinlock_t ofl_lock;
      int nocb_is_setup;
  };
  

• In 6.5: ✅

  struct rcu_state {
      struct rcu_node node[521];
      struct rcu_node * level[4];
      int ncpus;
      int n_online_cpus;
      long unsigned int gp_seq;
      long unsigned int gp_max;
      struct task_struct *gp_kthread;
      struct swait_queue_head gp_wq;
      short int gp_flags;
      short int gp_state;
      long unsigned int gp_wake_time;
      long unsigned int gp_wake_seq;
      long unsigned int gp_seq_polled;
      long unsigned int gp_seq_polled_snap;
      long unsigned int gp_seq_polled_exp_snap;
      struct mutex barrier_mutex;
      atomic_t barrier_cpu_count;
      struct completion barrier_completion;
      long unsigned int barrier_sequence;
      raw_spinlock_t barrier_lock;
      struct mutex exp_mutex;
      struct mutex exp_wake_mutex;
      long unsigned int expedited_sequence;
      atomic_t expedited_need_qs;
      struct swait_queue_head expedited_wq;
      int ncpus_snap;
      u8 cbovld;
      u8 cbovldnext;
      long unsigned int jiffies_force_qs;
      long unsigned int jiffies_kick_kthreads;
      long unsigned int n_force_qs;
      long unsigned int gp_start;
      long unsigned int gp_end;
      long unsigned int gp_activity;
      long unsigned int gp_req_activity;
      long unsigned int jiffies_stall;
      long unsigned int jiffies_resched;
      long unsigned int n_force_qs_gpstart;
      const char *name;
      char abbr;
      arch_spinlock_t ofl_lock;
      int nocb_is_setup;
  };
  

• In 6.8: ✅

  struct rcu_state {
      struct rcu_node node[521];
      struct rcu_node * level[4];
      int ncpus;
      int n_online_cpus;
      long unsigned int gp_seq;
      long unsigned int gp_max;
      struct task_struct *gp_kthread;
      struct swait_queue_head gp_wq;
      short int gp_flags;
      short int gp_state;
      long unsigned int gp_wake_time;
      long unsigned int gp_wake_seq;
      long unsigned int gp_seq_polled;
      long unsigned int gp_seq_polled_snap;
      long unsigned int gp_seq_polled_exp_snap;
      struct mutex barrier_mutex;
      atomic_t barrier_cpu_count;
      struct completion barrier_completion;
      long unsigned int barrier_sequence;
      raw_spinlock_t barrier_lock;
      struct mutex exp_mutex;
      struct mutex exp_wake_mutex;
      long unsigned int expedited_sequence;
      atomic_t expedited_need_qs;
      struct swait_queue_head expedited_wq;
      int ncpus_snap;
      u8 cbovld;
      u8 cbovldnext;
      long unsigned int jiffies_force_qs;
      long unsigned int jiffies_kick_kthreads;
      long unsigned int n_force_qs;
      long unsigned int gp_start;
      long unsigned int gp_end;
      long unsigned int gp_activity;
      long unsigned int gp_req_activity;
      long unsigned int jiffies_stall;
      int nr_fqs_jiffies_stall;
      long unsigned int jiffies_resched;
      long unsigned int n_force_qs_gpstart;
      const char *name;
      char abbr;
      arch_spinlock_t ofl_lock;
      int nocb_is_setup;
  };
  

Arch

• In arm64: ✅

  struct rcu_state {
      struct rcu_node node[17];
      struct rcu_node * level[3];
      int ncpus;
      u8 boost;
      long unsigned int gp_seq;
      struct task_struct *gp_kthread;
      struct swait_queue_head gp_wq;
      short int gp_flags;
      short int gp_state;
      long unsigned int gp_wake_time;
      long unsigned int gp_wake_seq;
      struct mutex barrier_mutex;
      atomic_t barrier_cpu_count;
      struct completion barrier_completion;
      long unsigned int barrier_sequence;
      struct mutex exp_mutex;
      struct mutex exp_wake_mutex;
      long unsigned int expedited_sequence;
      atomic_t expedited_need_qs;
      struct swait_queue_head expedited_wq;
      int ncpus_snap;
      long unsigned int jiffies_force_qs;
      long unsigned int jiffies_kick_kthreads;
      long unsigned int n_force_qs;
      long unsigned int gp_start;
      long unsigned int gp_end;
      long unsigned int gp_activity;
      long unsigned int gp_req_activity;
      long unsigned int jiffies_stall;
      long unsigned int jiffies_resched;
      long unsigned int n_force_qs_gpstart;
      long unsigned int gp_max;
      const char *name;
      char abbr;
      raw_spinlock_t ofl_lock;
  };
  

• In armhf: ✅

  struct rcu_state {
      struct rcu_node node[1];
      struct rcu_node * level[2];
      int ncpus;
      u8 boost;
      long unsigned int gp_seq;
      struct task_struct *gp_kthread;
      struct swait_queue_head gp_wq;
      short int gp_flags;
      short int gp_state;
      long unsigned int gp_wake_time;
      long unsigned int gp_wake_seq;
      struct mutex barrier_mutex;
      atomic_t barrier_cpu_count;
      struct completion barrier_completion;
      long unsigned int barrier_sequence;
      struct mutex exp_mutex;
      struct mutex exp_wake_mutex;
      long unsigned int expedited_sequence;
      atomic_t expedited_need_qs;
      struct swait_queue_head expedited_wq;
      int ncpus_snap;
      long unsigned int jiffies_force_qs;
      long unsigned int jiffies_kick_kthreads;
      long unsigned int n_force_qs;
      long unsigned int gp_start;
      long unsigned int gp_end;
      long unsigned int gp_activity;
      long unsigned int gp_req_activity;
      long unsigned int jiffies_stall;
      long unsigned int jiffies_resched;
      long unsigned int n_force_qs_gpstart;
      long unsigned int gp_max;
      const char *name;
      char abbr;
      raw_spinlock_t ofl_lock;
  };
  

• In ppc64el: ✅

  struct rcu_state {
      struct rcu_node node[131];
      struct rcu_node * level[4];
      int ncpus;
      u8 boost;
      long unsigned int gp_seq;
      struct task_struct *gp_kthread;
      struct swait_queue_head gp_wq;
      short int gp_flags;
      short int gp_state;
      long unsigned int gp_wake_time;
      long unsigned int gp_wake_seq;
      struct mutex barrier_mutex;
      atomic_t barrier_cpu_count;
      struct completion barrier_completion;
      long unsigned int barrier_sequence;
      struct mutex exp_mutex;
      struct mutex exp_wake_mutex;
      long unsigned int expedited_sequence;
      atomic_t expedited_need_qs;
      struct swait_queue_head expedited_wq;
      int ncpus_snap;
      long unsigned int jiffies_force_qs;
      long unsigned int jiffies_kick_kthreads;
      long unsigned int n_force_qs;
      long unsigned int gp_start;
      long unsigned int gp_end;
      long unsigned int gp_activity;
      long unsigned int gp_req_activity;
      long unsigned int jiffies_stall;
      long unsigned int jiffies_resched;
      long unsigned int n_force_qs_gpstart;
      long unsigned int gp_max;
      const char *name;
      char abbr;
      raw_spinlock_t ofl_lock;
  };
  

• In riscv64: ✅

  struct rcu_state {
      struct rcu_node node[1];
      struct rcu_node * level[2];
      int ncpus;
      u8 boost;
      long unsigned int gp_seq;
      struct task_struct *gp_kthread;
      struct swait_queue_head gp_wq;
      short int gp_flags;
      short int gp_state;
      long unsigned int gp_wake_time;
      long unsigned int gp_wake_seq;
      struct mutex barrier_mutex;
      atomic_t barrier_cpu_count;
      struct completion barrier_completion;
      long unsigned int barrier_sequence;
      struct mutex exp_mutex;
      struct mutex exp_wake_mutex;
      long unsigned int expedited_sequence;
      atomic_t expedited_need_qs;
      struct swait_queue_head expedited_wq;
      int ncpus_snap;
      long unsigned int jiffies_force_qs;
      long unsigned int jiffies_kick_kthreads;
      long unsigned int n_force_qs;
      long unsigned int gp_start;
      long unsigned int gp_end;
      long unsigned int gp_activity;
      long unsigned int gp_req_activity;
      long unsigned int jiffies_stall;
      long unsigned int jiffies_resched;
      long unsigned int n_force_qs_gpstart;
      long unsigned int gp_max;
      const char *name;
      char abbr;
      raw_spinlock_t ofl_lock;
  };
  

Flavor

• In aws: ✅

  struct rcu_state {
      struct rcu_node node[521];
      struct rcu_node * level[4];
      int ncpus;
      u8 boost;
      long unsigned int gp_seq;
      struct task_struct *gp_kthread;
      struct swait_queue_head gp_wq;
      short int gp_flags;
      short int gp_state;
      long unsigned int gp_wake_time;
      long unsigned int gp_wake_seq;
      struct mutex barrier_mutex;
      atomic_t barrier_cpu_count;
      struct completion barrier_completion;
      long unsigned int barrier_sequence;
      struct mutex exp_mutex;
      struct mutex exp_wake_mutex;
      long unsigned int expedited_sequence;
      atomic_t expedited_need_qs;
      struct swait_queue_head expedited_wq;
      int ncpus_snap;
      long unsigned int jiffies_force_qs;
      long unsigned int jiffies_kick_kthreads;
      long unsigned int n_force_qs;
      long unsigned int gp_start;
      long unsigned int gp_end;
      long unsigned int gp_activity;
      long unsigned int gp_req_activity;
      long unsigned int jiffies_stall;
      long unsigned int jiffies_resched;
      long unsigned int n_force_qs_gpstart;
      long unsigned int gp_max;
      const char *name;
      char abbr;
      raw_spinlock_t ofl_lock;
  };
  

• In azure: ✅

  struct rcu_state {
      struct rcu_node node[521];
      struct rcu_node * level[4];
      int ncpus;
      u8 boost;
      long unsigned int gp_seq;
      struct task_struct *gp_kthread;
      struct swait_queue_head gp_wq;
      short int gp_flags;
      short int gp_state;
      long unsigned int gp_wake_time;
      long unsigned int gp_wake_seq;
      struct mutex barrier_mutex;
      atomic_t barrier_cpu_count;
      struct completion barrier_completion;
      long unsigned int barrier_sequence;
      struct mutex exp_mutex;
      struct mutex exp_wake_mutex;
      long unsigned int expedited_sequence;
      atomic_t expedited_need_qs;
      struct swait_queue_head expedited_wq;
      int ncpus_snap;
      long unsigned int jiffies_force_qs;
      long unsigned int jiffies_kick_kthreads;
      long unsigned int n_force_qs;
      long unsigned int gp_start;
      long unsigned int gp_end;
      long unsigned int gp_activity;
      long unsigned int gp_req_activity;
      long unsigned int jiffies_stall;
      long unsigned int jiffies_resched;
      long unsigned int n_force_qs_gpstart;
      long unsigned int gp_max;
      const char *name;
      char abbr;
      raw_spinlock_t ofl_lock;
  };
  

• In gcp: ✅

  struct rcu_state {
      struct rcu_node node[521];
      struct rcu_node * level[4];
      int ncpus;
      u8 boost;
      long unsigned int gp_seq;
      struct task_struct *gp_kthread;
      struct swait_queue_head gp_wq;
      short int gp_flags;
      short int gp_state;
      long unsigned int gp_wake_time;
      long unsigned int gp_wake_seq;
      struct mutex barrier_mutex;
      atomic_t barrier_cpu_count;
      struct completion barrier_completion;
      long unsigned int barrier_sequence;
      struct mutex exp_mutex;
      struct mutex exp_wake_mutex;
      long unsigned int expedited_sequence;
      atomic_t expedited_need_qs;
      struct swait_queue_head expedited_wq;
      int ncpus_snap;
      long unsigned int jiffies_force_qs;
      long unsigned int jiffies_kick_kthreads;
      long unsigned int n_force_qs;
      long unsigned int gp_start;
      long unsigned int gp_end;
      long unsigned int gp_activity;
      long unsigned int gp_req_activity;
      long unsigned int jiffies_stall;
      long unsigned int jiffies_resched;
      long unsigned int n_force_qs_gpstart;
      long unsigned int gp_max;
      const char *name;
      char abbr;
      raw_spinlock_t ofl_lock;
  };
  

• In lowlatency: ✅

  struct rcu_state {
      struct rcu_node node[521];
      struct rcu_node * level[4];
      int ncpus;
      u8 boost;
      long unsigned int gp_seq;
      struct task_struct *gp_kthread;
      struct swait_queue_head gp_wq;
      short int gp_flags;
      short int gp_state;
      long unsigned int gp_wake_time;
      long unsigned int gp_wake_seq;
      struct mutex barrier_mutex;
      atomic_t barrier_cpu_count;
      struct completion barrier_completion;
      long unsigned int barrier_sequence;
      struct mutex exp_mutex;
      struct mutex exp_wake_mutex;
      long unsigned int expedited_sequence;
      atomic_t expedited_need_qs;
      struct swait_queue_head expedited_wq;
      int ncpus_snap;
      long unsigned int jiffies_force_qs;
      long unsigned int jiffies_kick_kthreads;
      long unsigned int n_force_qs;
      long unsigned int gp_start;
      long unsigned int gp_end;
      long unsigned int gp_activity;
      long unsigned int gp_req_activity;
      long unsigned int jiffies_stall;
      long unsigned int jiffies_resched;
      long unsigned int n_force_qs_gpstart;
      long unsigned int gp_max;
      const char *name;
      char abbr;
      raw_spinlock_t ofl_lock;
  };
  

Differences

Regular

• Changed between 4.4 and 4.8 ⚠️

  • Field added. struct mutex exp_mutex
  • Field added. struct mutex exp_wake_mutex
  • Field added. long unsigned int jiffies_kick_kthreads
  • Field removed. atomic_long_t expedited_workdone0
  • Field removed. atomic_long_t expedited_workdone1
  • Field removed. atomic_long_t expedited_workdone2
  • Field removed. atomic_long_t expedited_workdone3
  • Field type changed. wait_queue_head_t gp_wq ➡️ struct swait_queue_head gp_wq
  • Field type changed. wait_queue_head_t expedited_wq ➡️ struct swait_queue_head expedited_wq
• Changed between 4.8 and 4.10 ⚠️

  • Field type changed. struct rcu_node node[5] ➡️ struct rcu_node node[131]
  • Field type changed. struct rcu_node * level[3] ➡️ struct rcu_node * level[4]
• Changed between 4.10 and 4.13 ⚠️

  • Field added. struct rcu_cblist orphan_pend
  • Field added. struct rcu_cblist orphan_done
  • Field removed. u8 flavor_mask
  • Field removed. struct callback_head *orphan_nxtlist
  • Field removed. struct callback_head **orphan_nxttail
  • Field removed. struct callback_head *orphan_donelist
  • Field removed. struct callback_head **orphan_donetail
  • Field removed. long int qlen_lazy
  • Field removed. long int qlen
  • Field removed. atomic_long_t expedited_normal
  • Field type changed. struct rcu_node node[131] ➡️ struct rcu_node node[521]
• Changed between 4.13 and 4.15 ⚠️

  • Field removed. raw_spinlock_t orphan_lock
  • Field removed. struct rcu_cblist orphan_pend
  • Field removed. struct rcu_cblist orphan_done
• Changed between 4.15 and 4.18 ⚠️

  • Field removed. long unsigned int n_force_qs_lh
  • Field removed. long unsigned int n_force_qs_ngp
• Changed between 4.18 and 5.0 ⚠️

  • Field added. long unsigned int gp_seq
  • Field added. long unsigned int gp_end
  • Field added. long unsigned int gp_req_activity
  • Field added. raw_spinlock_t ofl_lock
  • Field removed. struct rcu_data *rda
  • Field removed. call_rcu_func_t call
  • Field removed. long unsigned int gpnum
  • Field removed. long unsigned int completed
  • Field removed. struct list_head flavors
• Changed between 5.0 and 5.3 ⚠️

  • Field added. long unsigned int gp_wake_time
  • Field added. long unsigned int gp_wake_seq
• No changes between 5.3 and 5.4 ✅
• Changed between 5.4 and 5.8 ⚠️

  • Field added. u8 cbovld
  • Field added. u8 cbovldnext
• Changed between 5.8 and 5.11 ⚠️

  • Field added. int n_online_cpus
• No changes between 5.11 and 5.13 ✅
• No changes between 5.13 and 5.15 ✅
• Changed between 5.15 and 5.19 ⚠️

  • Field added. raw_spinlock_t barrier_lock
  • Field added. int nocb_is_setup
  • Field removed. u8 boost
  • Field type changed. raw_spinlock_t ofl_lock ➡️ arch_spinlock_t ofl_lock
• Changed between 5.19 and 6.2 ⚠️

  • Field added. long unsigned int gp_seq_polled
  • Field added. long unsigned int gp_seq_polled_snap
  • Field added. long unsigned int gp_seq_polled_exp_snap
• No changes between 6.2 and 6.5 ✅
• Changed between 6.5 and 6.8 ⚠️

  • Field added. int nr_fqs_jiffies_stall

Arch

• Changed between amd64 and arm64 ⚠️

  • Field type changed. struct rcu_node node[521] ➡️ struct rcu_node node[17]
  • Field type changed. struct rcu_node * level[4] ➡️ struct rcu_node * level[3]
• Changed between amd64 and armhf ⚠️

  • Field type changed. struct rcu_node node[521] ➡️ struct rcu_node node[1]
  • Field type changed. struct rcu_node * level[4] ➡️ struct rcu_node * level[2]
• Changed between amd64 and ppc64el ⚠️

  • Field type changed. struct rcu_node node[521] ➡️ struct rcu_node node[131]
• Changed between amd64 and riscv64 ⚠️

  • Field type changed. struct rcu_node node[521] ➡️ struct rcu_node node[1]
  • Field type changed. struct rcu_node * level[4] ➡️ struct rcu_node * level[2]

Flavor

• No changes between generic and aws ✅
• No changes between generic and azure ✅
• No changes between generic and gcp ✅
• No changes between generic and lowlatency ✅