website-struct

Struct: blk_mq_hw_ctx

Status

Regular

• In 4.4: ✅

  struct blk_mq_hw_ctx {
      spinlock_t lock;
      struct list_head dispatch;
      long unsigned int state;
      struct delayed_work run_work;
      struct delayed_work delay_work;
      cpumask_var_t cpumask;
      int next_cpu;
      int next_cpu_batch;
      long unsigned int flags;
      struct request_queue *queue;
      struct blk_flush_queue *fq;
      void *driver_data;
      struct blk_mq_ctxmap ctx_map;
      unsigned int nr_ctx;
      struct blk_mq_ctx **ctxs;
      atomic_t wait_index;
      struct blk_mq_tags *tags;
      long unsigned int queued;
      long unsigned int run;
      long unsigned int dispatched[10];
      unsigned int numa_node;
      unsigned int queue_num;
      atomic_t nr_active;
      struct blk_mq_cpu_notifier cpu_notifier;
      struct kobject kobj;
      long unsigned int poll_invoked;
      long unsigned int poll_success;
  };
  

• In 4.8: ✅

  struct blk_mq_hw_ctx {
      spinlock_t lock;
      struct list_head dispatch;
      long unsigned int state;
      struct delayed_work run_work;
      struct delayed_work delay_work;
      cpumask_var_t cpumask;
      int next_cpu;
      int next_cpu_batch;
      long unsigned int flags;
      struct request_queue *queue;
      struct blk_flush_queue *fq;
      void *driver_data;
      struct blk_mq_ctxmap ctx_map;
      unsigned int nr_ctx;
      struct blk_mq_ctx **ctxs;
      atomic_t wait_index;
      struct blk_mq_tags *tags;
      long unsigned int queued;
      long unsigned int run;
      long unsigned int dispatched[10];
      unsigned int numa_node;
      unsigned int queue_num;
      atomic_t nr_active;
      struct blk_mq_cpu_notifier cpu_notifier;
      struct kobject kobj;
      long unsigned int poll_invoked;
      long unsigned int poll_success;
  };
  

• In 4.10: ✅

  struct blk_mq_hw_ctx {
      spinlock_t lock;
      struct list_head dispatch;
      long unsigned int state;
      struct work_struct run_work;
      cpumask_var_t cpumask;
      int next_cpu;
      int next_cpu_batch;
      long unsigned int flags;
      struct request_queue *queue;
      struct blk_flush_queue *fq;
      void *driver_data;
      struct sbitmap ctx_map;
      struct blk_mq_ctx **ctxs;
      unsigned int nr_ctx;
      atomic_t wait_index;
      struct blk_mq_tags *tags;
      struct srcu_struct queue_rq_srcu;
      long unsigned int queued;
      long unsigned int run;
      long unsigned int dispatched[7];
      unsigned int numa_node;
      unsigned int queue_num;
      atomic_t nr_active;
      struct delayed_work delay_work;
      struct hlist_node cpuhp_dead;
      struct kobject kobj;
      long unsigned int poll_considered;
      long unsigned int poll_invoked;
      long unsigned int poll_success;
  };
  

• In 4.13: ✅

  struct blk_mq_hw_ctx {
      spinlock_t lock;
      struct list_head dispatch;
      long unsigned int state;
      struct delayed_work run_work;
      cpumask_var_t cpumask;
      int next_cpu;
      int next_cpu_batch;
      long unsigned int flags;
      void *sched_data;
      struct request_queue *queue;
      struct blk_flush_queue *fq;
      void *driver_data;
      struct sbitmap ctx_map;
      struct blk_mq_ctx **ctxs;
      unsigned int nr_ctx;
      wait_queue_entry_t dispatch_wait;
      atomic_t wait_index;
      struct blk_mq_tags *tags;
      struct blk_mq_tags *sched_tags;
      long unsigned int queued;
      long unsigned int run;
      long unsigned int dispatched[7];
      unsigned int numa_node;
      unsigned int queue_num;
      atomic_t nr_active;
      struct hlist_node cpuhp_dead;
      struct kobject kobj;
      long unsigned int poll_considered;
      long unsigned int poll_invoked;
      long unsigned int poll_success;
      struct dentry *debugfs_dir;
      struct dentry *sched_debugfs_dir;
      struct srcu_struct queue_rq_srcu[0];
  };
  

• In 4.15: ✅

  struct blk_mq_hw_ctx {
      spinlock_t lock;
      struct list_head dispatch;
      long unsigned int state;
      struct delayed_work run_work;
      cpumask_var_t cpumask;
      int next_cpu;
      int next_cpu_batch;
      long unsigned int flags;
      void *sched_data;
      struct request_queue *queue;
      struct blk_flush_queue *fq;
      void *driver_data;
      struct sbitmap ctx_map;
      struct blk_mq_ctx *dispatch_from;
      struct blk_mq_ctx **ctxs;
      unsigned int nr_ctx;
      wait_queue_entry_t dispatch_wait;
      atomic_t wait_index;
      struct blk_mq_tags *tags;
      struct blk_mq_tags *sched_tags;
      long unsigned int queued;
      long unsigned int run;
      long unsigned int dispatched[7];
      unsigned int numa_node;
      unsigned int queue_num;
      atomic_t nr_active;
      struct hlist_node cpuhp_dead;
      struct kobject kobj;
      long unsigned int poll_considered;
      long unsigned int poll_invoked;
      long unsigned int poll_success;
      struct dentry *debugfs_dir;
      struct dentry *sched_debugfs_dir;
      struct srcu_struct queue_rq_srcu[0];
  };
  

• In 4.18: ✅

  struct blk_mq_hw_ctx {
      spinlock_t lock;
      struct list_head dispatch;
      long unsigned int state;
      struct delayed_work run_work;
      cpumask_var_t cpumask;
      int next_cpu;
      int next_cpu_batch;
      long unsigned int flags;
      void *sched_data;
      struct request_queue *queue;
      struct blk_flush_queue *fq;
      void *driver_data;
      struct sbitmap ctx_map;
      struct blk_mq_ctx *dispatch_from;
      struct blk_mq_ctx **ctxs;
      unsigned int nr_ctx;
      wait_queue_entry_t dispatch_wait;
      atomic_t wait_index;
      struct blk_mq_tags *tags;
      struct blk_mq_tags *sched_tags;
      long unsigned int queued;
      long unsigned int run;
      long unsigned int dispatched[7];
      unsigned int numa_node;
      unsigned int queue_num;
      atomic_t nr_active;
      unsigned int nr_expired;
      struct hlist_node cpuhp_dead;
      struct kobject kobj;
      long unsigned int poll_considered;
      long unsigned int poll_invoked;
      long unsigned int poll_success;
      struct dentry *debugfs_dir;
      struct dentry *sched_debugfs_dir;
      struct srcu_struct srcu[0];
  };
  

• In 5.0: ✅

  struct blk_mq_hw_ctx {
      spinlock_t lock;
      struct list_head dispatch;
      long unsigned int state;
      struct delayed_work run_work;
      cpumask_var_t cpumask;
      int next_cpu;
      int next_cpu_batch;
      long unsigned int flags;
      void *sched_data;
      struct request_queue *queue;
      struct blk_flush_queue *fq;
      void *driver_data;
      struct sbitmap ctx_map;
      struct blk_mq_ctx *dispatch_from;
      unsigned int dispatch_busy;
      short unsigned int type;
      short unsigned int nr_ctx;
      struct blk_mq_ctx **ctxs;
      spinlock_t dispatch_wait_lock;
      wait_queue_entry_t dispatch_wait;
      atomic_t wait_index;
      struct blk_mq_tags *tags;
      struct blk_mq_tags *sched_tags;
      long unsigned int queued;
      long unsigned int run;
      long unsigned int dispatched[7];
      unsigned int numa_node;
      unsigned int queue_num;
      atomic_t nr_active;
      unsigned int nr_expired;
      struct hlist_node cpuhp_dead;
      struct kobject kobj;
      long unsigned int poll_considered;
      long unsigned int poll_invoked;
      long unsigned int poll_success;
      struct dentry *debugfs_dir;
      struct dentry *sched_debugfs_dir;
      struct srcu_struct srcu[0];
  };
  

• In 5.3: ✅

  struct blk_mq_hw_ctx {
      spinlock_t lock;
      struct list_head dispatch;
      long unsigned int state;
      struct delayed_work run_work;
      cpumask_var_t cpumask;
      int next_cpu;
      int next_cpu_batch;
      long unsigned int flags;
      void *sched_data;
      struct request_queue *queue;
      struct blk_flush_queue *fq;
      void *driver_data;
      struct sbitmap ctx_map;
      struct blk_mq_ctx *dispatch_from;
      unsigned int dispatch_busy;
      short unsigned int type;
      short unsigned int nr_ctx;
      struct blk_mq_ctx **ctxs;
      spinlock_t dispatch_wait_lock;
      wait_queue_entry_t dispatch_wait;
      atomic_t wait_index;
      struct blk_mq_tags *tags;
      struct blk_mq_tags *sched_tags;
      long unsigned int queued;
      long unsigned int run;
      long unsigned int dispatched[7];
      unsigned int numa_node;
      unsigned int queue_num;
      atomic_t nr_active;
      struct hlist_node cpuhp_dead;
      struct kobject kobj;
      long unsigned int poll_considered;
      long unsigned int poll_invoked;
      long unsigned int poll_success;
      struct dentry *debugfs_dir;
      struct dentry *sched_debugfs_dir;
      struct list_head hctx_list;
      struct srcu_struct srcu[0];
  };
  

• In 5.4: ✅

  struct blk_mq_hw_ctx {
      spinlock_t lock;
      struct list_head dispatch;
      long unsigned int state;
      struct delayed_work run_work;
      cpumask_var_t cpumask;
      int next_cpu;
      int next_cpu_batch;
      long unsigned int flags;
      void *sched_data;
      struct request_queue *queue;
      struct blk_flush_queue *fq;
      void *driver_data;
      struct sbitmap ctx_map;
      struct blk_mq_ctx *dispatch_from;
      unsigned int dispatch_busy;
      short unsigned int type;
      short unsigned int nr_ctx;
      struct blk_mq_ctx **ctxs;
      spinlock_t dispatch_wait_lock;
      wait_queue_entry_t dispatch_wait;
      atomic_t wait_index;
      struct blk_mq_tags *tags;
      struct blk_mq_tags *sched_tags;
      long unsigned int queued;
      long unsigned int run;
      long unsigned int dispatched[7];
      unsigned int numa_node;
      unsigned int queue_num;
      atomic_t nr_active;
      struct hlist_node cpuhp_dead;
      struct kobject kobj;
      long unsigned int poll_considered;
      long unsigned int poll_invoked;
      long unsigned int poll_success;
      struct dentry *debugfs_dir;
      struct dentry *sched_debugfs_dir;
      struct list_head hctx_list;
      struct srcu_struct srcu[0];
  };
  

• In 5.8: ✅

  struct blk_mq_hw_ctx {
      spinlock_t lock;
      struct list_head dispatch;
      long unsigned int state;
      struct delayed_work run_work;
      cpumask_var_t cpumask;
      int next_cpu;
      int next_cpu_batch;
      long unsigned int flags;
      void *sched_data;
      struct request_queue *queue;
      struct blk_flush_queue *fq;
      void *driver_data;
      struct sbitmap ctx_map;
      struct blk_mq_ctx *dispatch_from;
      unsigned int dispatch_busy;
      short unsigned int type;
      short unsigned int nr_ctx;
      struct blk_mq_ctx **ctxs;
      spinlock_t dispatch_wait_lock;
      wait_queue_entry_t dispatch_wait;
      atomic_t wait_index;
      struct blk_mq_tags *tags;
      struct blk_mq_tags *sched_tags;
      long unsigned int queued;
      long unsigned int run;
      long unsigned int dispatched[7];
      unsigned int numa_node;
      unsigned int queue_num;
      atomic_t nr_active;
      struct hlist_node cpuhp_online;
      struct hlist_node cpuhp_dead;
      struct kobject kobj;
      long unsigned int poll_considered;
      long unsigned int poll_invoked;
      long unsigned int poll_success;
      struct dentry *debugfs_dir;
      struct dentry *sched_debugfs_dir;
      struct list_head hctx_list;
      struct srcu_struct srcu[0];
  };
  

• In 5.11: ✅

  struct blk_mq_hw_ctx {
      spinlock_t lock;
      struct list_head dispatch;
      long unsigned int state;
      struct delayed_work run_work;
      cpumask_var_t cpumask;
      int next_cpu;
      int next_cpu_batch;
      long unsigned int flags;
      void *sched_data;
      struct request_queue *queue;
      struct blk_flush_queue *fq;
      void *driver_data;
      struct sbitmap ctx_map;
      struct blk_mq_ctx *dispatch_from;
      unsigned int dispatch_busy;
      short unsigned int type;
      short unsigned int nr_ctx;
      struct blk_mq_ctx **ctxs;
      spinlock_t dispatch_wait_lock;
      wait_queue_entry_t dispatch_wait;
      atomic_t wait_index;
      struct blk_mq_tags *tags;
      struct blk_mq_tags *sched_tags;
      long unsigned int queued;
      long unsigned int run;
      long unsigned int dispatched[7];
      unsigned int numa_node;
      unsigned int queue_num;
      atomic_t nr_active;
      atomic_t elevator_queued;
      struct hlist_node cpuhp_online;
      struct hlist_node cpuhp_dead;
      struct kobject kobj;
      long unsigned int poll_considered;
      long unsigned int poll_invoked;
      long unsigned int poll_success;
      struct dentry *debugfs_dir;
      struct dentry *sched_debugfs_dir;
      struct list_head hctx_list;
      struct srcu_struct srcu[0];
  };
  

• In 5.13: ✅

  struct blk_mq_hw_ctx {
      spinlock_t lock;
      struct list_head dispatch;
      long unsigned int state;
      struct delayed_work run_work;
      cpumask_var_t cpumask;
      int next_cpu;
      int next_cpu_batch;
      long unsigned int flags;
      void *sched_data;
      struct request_queue *queue;
      struct blk_flush_queue *fq;
      void *driver_data;
      struct sbitmap ctx_map;
      struct blk_mq_ctx *dispatch_from;
      unsigned int dispatch_busy;
      short unsigned int type;
      short unsigned int nr_ctx;
      struct blk_mq_ctx **ctxs;
      spinlock_t dispatch_wait_lock;
      wait_queue_entry_t dispatch_wait;
      atomic_t wait_index;
      struct blk_mq_tags *tags;
      struct blk_mq_tags *sched_tags;
      long unsigned int queued;
      long unsigned int run;
      long unsigned int dispatched[7];
      unsigned int numa_node;
      unsigned int queue_num;
      atomic_t nr_active;
      struct hlist_node cpuhp_online;
      struct hlist_node cpuhp_dead;
      struct kobject kobj;
      long unsigned int poll_considered;
      long unsigned int poll_invoked;
      long unsigned int poll_success;
      struct dentry *debugfs_dir;
      struct dentry *sched_debugfs_dir;
      struct list_head hctx_list;
      struct srcu_struct srcu[0];
  };
  

• In 5.15: ✅

  struct blk_mq_hw_ctx {
      spinlock_t lock;
      struct list_head dispatch;
      long unsigned int state;
      struct delayed_work run_work;
      cpumask_var_t cpumask;
      int next_cpu;
      int next_cpu_batch;
      long unsigned int flags;
      void *sched_data;
      struct request_queue *queue;
      struct blk_flush_queue *fq;
      void *driver_data;
      struct sbitmap ctx_map;
      struct blk_mq_ctx *dispatch_from;
      unsigned int dispatch_busy;
      short unsigned int type;
      short unsigned int nr_ctx;
      struct blk_mq_ctx **ctxs;
      spinlock_t dispatch_wait_lock;
      wait_queue_entry_t dispatch_wait;
      atomic_t wait_index;
      struct blk_mq_tags *tags;
      struct blk_mq_tags *sched_tags;
      long unsigned int queued;
      long unsigned int run;
      long unsigned int dispatched[7];
      unsigned int numa_node;
      unsigned int queue_num;
      atomic_t nr_active;
      struct hlist_node cpuhp_online;
      struct hlist_node cpuhp_dead;
      struct kobject kobj;
      long unsigned int poll_considered;
      long unsigned int poll_invoked;
      long unsigned int poll_success;
      struct dentry *debugfs_dir;
      struct dentry *sched_debugfs_dir;
      struct list_head hctx_list;
      struct srcu_struct srcu[0];
  };
  

• In 5.19: ✅

  struct blk_mq_hw_ctx {
      spinlock_t lock;
      struct list_head dispatch;
      long unsigned int state;
      struct delayed_work run_work;
      cpumask_var_t cpumask;
      int next_cpu;
      int next_cpu_batch;
      long unsigned int flags;
      void *sched_data;
      struct request_queue *queue;
      struct blk_flush_queue *fq;
      void *driver_data;
      struct sbitmap ctx_map;
      struct blk_mq_ctx *dispatch_from;
      unsigned int dispatch_busy;
      short unsigned int type;
      short unsigned int nr_ctx;
      struct blk_mq_ctx **ctxs;
      spinlock_t dispatch_wait_lock;
      wait_queue_entry_t dispatch_wait;
      atomic_t wait_index;
      struct blk_mq_tags *tags;
      struct blk_mq_tags *sched_tags;
      long unsigned int queued;
      long unsigned int run;
      unsigned int numa_node;
      unsigned int queue_num;
      atomic_t nr_active;
      struct hlist_node cpuhp_online;
      struct hlist_node cpuhp_dead;
      struct kobject kobj;
      struct dentry *debugfs_dir;
      struct dentry *sched_debugfs_dir;
      struct list_head hctx_list;
  };
  

• In 6.2: ✅

  struct blk_mq_hw_ctx {
      spinlock_t lock;
      struct list_head dispatch;
      long unsigned int state;
      struct delayed_work run_work;
      cpumask_var_t cpumask;
      int next_cpu;
      int next_cpu_batch;
      long unsigned int flags;
      void *sched_data;
      struct request_queue *queue;
      struct blk_flush_queue *fq;
      void *driver_data;
      struct sbitmap ctx_map;
      struct blk_mq_ctx *dispatch_from;
      unsigned int dispatch_busy;
      short unsigned int type;
      short unsigned int nr_ctx;
      struct blk_mq_ctx **ctxs;
      spinlock_t dispatch_wait_lock;
      wait_queue_entry_t dispatch_wait;
      atomic_t wait_index;
      struct blk_mq_tags *tags;
      struct blk_mq_tags *sched_tags;
      long unsigned int queued;
      long unsigned int run;
      unsigned int numa_node;
      unsigned int queue_num;
      atomic_t nr_active;
      struct hlist_node cpuhp_online;
      struct hlist_node cpuhp_dead;
      struct kobject kobj;
      struct dentry *debugfs_dir;
      struct dentry *sched_debugfs_dir;
      struct list_head hctx_list;
  };
  

• In 6.5: ✅

  struct blk_mq_hw_ctx {
      spinlock_t lock;
      struct list_head dispatch;
      long unsigned int state;
      struct delayed_work run_work;
      cpumask_var_t cpumask;
      int next_cpu;
      int next_cpu_batch;
      long unsigned int flags;
      void *sched_data;
      struct request_queue *queue;
      struct blk_flush_queue *fq;
      void *driver_data;
      struct sbitmap ctx_map;
      struct blk_mq_ctx *dispatch_from;
      unsigned int dispatch_busy;
      short unsigned int type;
      short unsigned int nr_ctx;
      struct blk_mq_ctx **ctxs;
      spinlock_t dispatch_wait_lock;
      wait_queue_entry_t dispatch_wait;
      atomic_t wait_index;
      struct blk_mq_tags *tags;
      struct blk_mq_tags *sched_tags;
      long unsigned int run;
      unsigned int numa_node;
      unsigned int queue_num;
      atomic_t nr_active;
      struct hlist_node cpuhp_online;
      struct hlist_node cpuhp_dead;
      struct kobject kobj;
      struct dentry *debugfs_dir;
      struct dentry *sched_debugfs_dir;
      struct list_head hctx_list;
  };
  

• In 6.8: ✅

  struct blk_mq_hw_ctx {
      spinlock_t lock;
      struct list_head dispatch;
      long unsigned int state;
      struct delayed_work run_work;
      cpumask_var_t cpumask;
      int next_cpu;
      int next_cpu_batch;
      long unsigned int flags;
      void *sched_data;
      struct request_queue *queue;
      struct blk_flush_queue *fq;
      void *driver_data;
      struct sbitmap ctx_map;
      struct blk_mq_ctx *dispatch_from;
      unsigned int dispatch_busy;
      short unsigned int type;
      short unsigned int nr_ctx;
      struct blk_mq_ctx **ctxs;
      spinlock_t dispatch_wait_lock;
      wait_queue_entry_t dispatch_wait;
      atomic_t wait_index;
      struct blk_mq_tags *tags;
      struct blk_mq_tags *sched_tags;
      unsigned int numa_node;
      unsigned int queue_num;
      atomic_t nr_active;
      struct hlist_node cpuhp_online;
      struct hlist_node cpuhp_dead;
      struct kobject kobj;
      struct dentry *debugfs_dir;
      struct dentry *sched_debugfs_dir;
      struct list_head hctx_list;
  };
  

Arch

• In arm64: ✅

  struct blk_mq_hw_ctx {
      spinlock_t lock;
      struct list_head dispatch;
      long unsigned int state;
      struct delayed_work run_work;
      cpumask_var_t cpumask;
      int next_cpu;
      int next_cpu_batch;
      long unsigned int flags;
      void *sched_data;
      struct request_queue *queue;
      struct blk_flush_queue *fq;
      void *driver_data;
      struct sbitmap ctx_map;
      struct blk_mq_ctx *dispatch_from;
      unsigned int dispatch_busy;
      short unsigned int type;
      short unsigned int nr_ctx;
      struct blk_mq_ctx **ctxs;
      spinlock_t dispatch_wait_lock;
      wait_queue_entry_t dispatch_wait;
      atomic_t wait_index;
      struct blk_mq_tags *tags;
      struct blk_mq_tags *sched_tags;
      long unsigned int queued;
      long unsigned int run;
      long unsigned int dispatched[7];
      unsigned int numa_node;
      unsigned int queue_num;
      atomic_t nr_active;
      struct hlist_node cpuhp_dead;
      struct kobject kobj;
      long unsigned int poll_considered;
      long unsigned int poll_invoked;
      long unsigned int poll_success;
      struct dentry *debugfs_dir;
      struct dentry *sched_debugfs_dir;
      struct list_head hctx_list;
      struct srcu_struct srcu[0];
  };
  

• In armhf: ✅

  struct blk_mq_hw_ctx {
      spinlock_t lock;
      struct list_head dispatch;
      long unsigned int state;
      struct delayed_work run_work;
      cpumask_var_t cpumask;
      int next_cpu;
      int next_cpu_batch;
      long unsigned int flags;
      void *sched_data;
      struct request_queue *queue;
      struct blk_flush_queue *fq;
      void *driver_data;
      struct sbitmap ctx_map;
      struct blk_mq_ctx *dispatch_from;
      unsigned int dispatch_busy;
      short unsigned int type;
      short unsigned int nr_ctx;
      struct blk_mq_ctx **ctxs;
      spinlock_t dispatch_wait_lock;
      wait_queue_entry_t dispatch_wait;
      atomic_t wait_index;
      struct blk_mq_tags *tags;
      struct blk_mq_tags *sched_tags;
      long unsigned int queued;
      long unsigned int run;
      long unsigned int dispatched[7];
      unsigned int numa_node;
      unsigned int queue_num;
      atomic_t nr_active;
      struct hlist_node cpuhp_dead;
      struct kobject kobj;
      long unsigned int poll_considered;
      long unsigned int poll_invoked;
      long unsigned int poll_success;
      struct dentry *debugfs_dir;
      struct dentry *sched_debugfs_dir;
      struct list_head hctx_list;
      struct srcu_struct srcu[0];
  };
  

• In ppc64el: ✅

  struct blk_mq_hw_ctx {
      spinlock_t lock;
      struct list_head dispatch;
      long unsigned int state;
      struct delayed_work run_work;
      cpumask_var_t cpumask;
      int next_cpu;
      int next_cpu_batch;
      long unsigned int flags;
      void *sched_data;
      struct request_queue *queue;
      struct blk_flush_queue *fq;
      void *driver_data;
      struct sbitmap ctx_map;
      struct blk_mq_ctx *dispatch_from;
      unsigned int dispatch_busy;
      short unsigned int type;
      short unsigned int nr_ctx;
      struct blk_mq_ctx **ctxs;
      spinlock_t dispatch_wait_lock;
      wait_queue_entry_t dispatch_wait;
      atomic_t wait_index;
      struct blk_mq_tags *tags;
      struct blk_mq_tags *sched_tags;
      long unsigned int queued;
      long unsigned int run;
      long unsigned int dispatched[7];
      unsigned int numa_node;
      unsigned int queue_num;
      atomic_t nr_active;
      struct hlist_node cpuhp_dead;
      struct kobject kobj;
      long unsigned int poll_considered;
      long unsigned int poll_invoked;
      long unsigned int poll_success;
      struct dentry *debugfs_dir;
      struct dentry *sched_debugfs_dir;
      struct list_head hctx_list;
      struct srcu_struct srcu[0];
  };
  

• In riscv64: ✅

  struct blk_mq_hw_ctx {
      spinlock_t lock;
      struct list_head dispatch;
      long unsigned int state;
      struct delayed_work run_work;
      cpumask_var_t cpumask;
      int next_cpu;
      int next_cpu_batch;
      long unsigned int flags;
      void *sched_data;
      struct request_queue *queue;
      struct blk_flush_queue *fq;
      void *driver_data;
      struct sbitmap ctx_map;
      struct blk_mq_ctx *dispatch_from;
      unsigned int dispatch_busy;
      short unsigned int type;
      short unsigned int nr_ctx;
      struct blk_mq_ctx **ctxs;
      spinlock_t dispatch_wait_lock;
      wait_queue_entry_t dispatch_wait;
      atomic_t wait_index;
      struct blk_mq_tags *tags;
      struct blk_mq_tags *sched_tags;
      long unsigned int queued;
      long unsigned int run;
      long unsigned int dispatched[7];
      unsigned int numa_node;
      unsigned int queue_num;
      atomic_t nr_active;
      struct hlist_node cpuhp_dead;
      struct kobject kobj;
      long unsigned int poll_considered;
      long unsigned int poll_invoked;
      long unsigned int poll_success;
      struct dentry *debugfs_dir;
      struct dentry *sched_debugfs_dir;
      struct list_head hctx_list;
      struct srcu_struct srcu[0];
  };
  

Flavor

• In aws: ✅

  struct blk_mq_hw_ctx {
      spinlock_t lock;
      struct list_head dispatch;
      long unsigned int state;
      struct delayed_work run_work;
      cpumask_var_t cpumask;
      int next_cpu;
      int next_cpu_batch;
      long unsigned int flags;
      void *sched_data;
      struct request_queue *queue;
      struct blk_flush_queue *fq;
      void *driver_data;
      struct sbitmap ctx_map;
      struct blk_mq_ctx *dispatch_from;
      unsigned int dispatch_busy;
      short unsigned int type;
      short unsigned int nr_ctx;
      struct blk_mq_ctx **ctxs;
      spinlock_t dispatch_wait_lock;
      wait_queue_entry_t dispatch_wait;
      atomic_t wait_index;
      struct blk_mq_tags *tags;
      struct blk_mq_tags *sched_tags;
      long unsigned int queued;
      long unsigned int run;
      long unsigned int dispatched[7];
      unsigned int numa_node;
      unsigned int queue_num;
      atomic_t nr_active;
      struct hlist_node cpuhp_dead;
      struct kobject kobj;
      long unsigned int poll_considered;
      long unsigned int poll_invoked;
      long unsigned int poll_success;
      struct dentry *debugfs_dir;
      struct dentry *sched_debugfs_dir;
      struct list_head hctx_list;
      struct srcu_struct srcu[0];
  };
  

• In azure: ✅

  struct blk_mq_hw_ctx {
      spinlock_t lock;
      struct list_head dispatch;
      long unsigned int state;
      struct delayed_work run_work;
      cpumask_var_t cpumask;
      int next_cpu;
      int next_cpu_batch;
      long unsigned int flags;
      void *sched_data;
      struct request_queue *queue;
      struct blk_flush_queue *fq;
      void *driver_data;
      struct sbitmap ctx_map;
      struct blk_mq_ctx *dispatch_from;
      unsigned int dispatch_busy;
      short unsigned int type;
      short unsigned int nr_ctx;
      struct blk_mq_ctx **ctxs;
      spinlock_t dispatch_wait_lock;
      wait_queue_entry_t dispatch_wait;
      atomic_t wait_index;
      struct blk_mq_tags *tags;
      struct blk_mq_tags *sched_tags;
      long unsigned int queued;
      long unsigned int run;
      long unsigned int dispatched[7];
      unsigned int numa_node;
      unsigned int queue_num;
      atomic_t nr_active;
      struct hlist_node cpuhp_dead;
      struct kobject kobj;
      long unsigned int poll_considered;
      long unsigned int poll_invoked;
      long unsigned int poll_success;
      struct dentry *debugfs_dir;
      struct dentry *sched_debugfs_dir;
      struct list_head hctx_list;
      struct srcu_struct srcu[0];
  };
  

• In gcp: ✅

  struct blk_mq_hw_ctx {
      spinlock_t lock;
      struct list_head dispatch;
      long unsigned int state;
      struct delayed_work run_work;
      cpumask_var_t cpumask;
      int next_cpu;
      int next_cpu_batch;
      long unsigned int flags;
      void *sched_data;
      struct request_queue *queue;
      struct blk_flush_queue *fq;
      void *driver_data;
      struct sbitmap ctx_map;
      struct blk_mq_ctx *dispatch_from;
      unsigned int dispatch_busy;
      short unsigned int type;
      short unsigned int nr_ctx;
      struct blk_mq_ctx **ctxs;
      spinlock_t dispatch_wait_lock;
      wait_queue_entry_t dispatch_wait;
      atomic_t wait_index;
      struct blk_mq_tags *tags;
      struct blk_mq_tags *sched_tags;
      long unsigned int queued;
      long unsigned int run;
      long unsigned int dispatched[7];
      unsigned int numa_node;
      unsigned int queue_num;
      atomic_t nr_active;
      struct hlist_node cpuhp_dead;
      struct kobject kobj;
      long unsigned int poll_considered;
      long unsigned int poll_invoked;
      long unsigned int poll_success;
      struct dentry *debugfs_dir;
      struct dentry *sched_debugfs_dir;
      struct list_head hctx_list;
      struct srcu_struct srcu[0];
  };
  

• In lowlatency: ✅

  struct blk_mq_hw_ctx {
      spinlock_t lock;
      struct list_head dispatch;
      long unsigned int state;
      struct delayed_work run_work;
      cpumask_var_t cpumask;
      int next_cpu;
      int next_cpu_batch;
      long unsigned int flags;
      void *sched_data;
      struct request_queue *queue;
      struct blk_flush_queue *fq;
      void *driver_data;
      struct sbitmap ctx_map;
      struct blk_mq_ctx *dispatch_from;
      unsigned int dispatch_busy;
      short unsigned int type;
      short unsigned int nr_ctx;
      struct blk_mq_ctx **ctxs;
      spinlock_t dispatch_wait_lock;
      wait_queue_entry_t dispatch_wait;
      atomic_t wait_index;
      struct blk_mq_tags *tags;
      struct blk_mq_tags *sched_tags;
      long unsigned int queued;
      long unsigned int run;
      long unsigned int dispatched[7];
      unsigned int numa_node;
      unsigned int queue_num;
      atomic_t nr_active;
      struct hlist_node cpuhp_dead;
      struct kobject kobj;
      long unsigned int poll_considered;
      long unsigned int poll_invoked;
      long unsigned int poll_success;
      struct dentry *debugfs_dir;
      struct dentry *sched_debugfs_dir;
      struct list_head hctx_list;
      struct srcu_struct srcu[0];
  };
  

Differences

Regular

• No changes between 4.4 and 4.8 ✅
• Changed between 4.8 and 4.10 ⚠️

  • Field added. struct srcu_struct queue_rq_srcu
  • Field added. struct hlist_node cpuhp_dead
  • Field added. long unsigned int poll_considered
  • Field removed. struct blk_mq_cpu_notifier cpu_notifier
  • Field type changed. struct delayed_work run_work ➡️ struct work_struct run_work
  • Field type changed. struct blk_mq_ctxmap ctx_map ➡️ struct sbitmap ctx_map
  • Field type changed. long unsigned int dispatched[10] ➡️ long unsigned int dispatched[7]
• Changed between 4.10 and 4.13 ⚠️

  • Field added. void *sched_data
  • Field added. wait_queue_entry_t dispatch_wait
  • Field added. struct blk_mq_tags *sched_tags
  • Field added. struct dentry *debugfs_dir
  • Field added. struct dentry *sched_debugfs_dir
  • Field removed. struct delayed_work delay_work
  • Field type changed. struct work_struct run_work ➡️ struct delayed_work run_work
  • Field type changed. struct srcu_struct queue_rq_srcu ➡️ struct srcu_struct queue_rq_srcu[0]
• Changed between 4.13 and 4.15 ⚠️

  • Field added. struct blk_mq_ctx *dispatch_from
• Changed between 4.15 and 4.18 ⚠️

  • Field added. unsigned int nr_expired
  • Field added. struct srcu_struct srcu[0]
  • Field removed. struct srcu_struct queue_rq_srcu[0]
• Changed between 4.18 and 5.0 ⚠️

  • Field added. unsigned int dispatch_busy
  • Field added. short unsigned int type
  • Field added. spinlock_t dispatch_wait_lock
  • Field type changed. unsigned int nr_ctx ➡️ short unsigned int nr_ctx
• Changed between 5.0 and 5.3 ⚠️

  • Field added. struct list_head hctx_list
  • Field removed. unsigned int nr_expired
• No changes between 5.3 and 5.4 ✅
• Changed between 5.4 and 5.8 ⚠️

  • Field added. struct hlist_node cpuhp_online
• Changed between 5.8 and 5.11 ⚠️

  • Field added. atomic_t elevator_queued
• Changed between 5.11 and 5.13 ⚠️

  • Field removed. atomic_t elevator_queued
• No changes between 5.13 and 5.15 ✅
• Changed between 5.15 and 5.19 ⚠️

  • Field removed. long unsigned int dispatched[7]
  • Field removed. long unsigned int poll_considered
  • Field removed. long unsigned int poll_invoked
  • Field removed. long unsigned int poll_success
  • Field removed. struct srcu_struct srcu[0]
• No changes between 5.19 and 6.2 ✅
• Changed between 6.2 and 6.5 ⚠️

  • Field removed. long unsigned int queued
• Changed between 6.5 and 6.8 ⚠️

  • Field removed. long unsigned int run

Arch

• No changes between amd64 and arm64 ✅
• No changes between amd64 and armhf ✅
• No changes between amd64 and ppc64el ✅
• No changes between amd64 and riscv64 ✅

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 ✅