website-struct

Struct: ring_buffer

Status

Regular

• In 4.4: ✅

  struct ring_buffer {
      unsigned int flags;
      int cpus;
      atomic_t record_disabled;
      atomic_t resize_disabled;
      cpumask_var_t cpumask;
      struct lock_class_key *reader_lock_key;
      struct mutex mutex;
      struct ring_buffer_per_cpu **buffers;
      struct notifier_block cpu_notify;
      u64 (*clock)();
      struct rb_irq_work irq_work;
  };
  

• In 4.8: ✅

  struct ring_buffer {
      unsigned int flags;
      int cpus;
      atomic_t record_disabled;
      atomic_t resize_disabled;
      cpumask_var_t cpumask;
      struct lock_class_key *reader_lock_key;
      struct mutex mutex;
      struct ring_buffer_per_cpu **buffers;
      struct notifier_block cpu_notify;
      u64 (*clock)();
      struct rb_irq_work irq_work;
  };
  

• In 4.10: ✅

  struct ring_buffer {
      unsigned int flags;
      int cpus;
      atomic_t record_disabled;
      atomic_t resize_disabled;
      cpumask_var_t cpumask;
      struct lock_class_key *reader_lock_key;
      struct mutex mutex;
      struct ring_buffer_per_cpu **buffers;
      struct hlist_node node;
      u64 (*clock)();
      struct rb_irq_work irq_work;
  };
  

• In 4.13: ✅

  struct ring_buffer {
      unsigned int flags;
      int cpus;
      atomic_t record_disabled;
      atomic_t resize_disabled;
      cpumask_var_t cpumask;
      struct lock_class_key *reader_lock_key;
      struct mutex mutex;
      struct ring_buffer_per_cpu **buffers;
      struct hlist_node node;
      u64 (*clock)();
      struct rb_irq_work irq_work;
  };
  

• In 4.15: ✅

  struct ring_buffer {
      unsigned int flags;
      int cpus;
      atomic_t record_disabled;
      atomic_t resize_disabled;
      cpumask_var_t cpumask;
      struct lock_class_key *reader_lock_key;
      struct mutex mutex;
      struct ring_buffer_per_cpu **buffers;
      struct hlist_node node;
      u64 (*clock)();
      struct rb_irq_work irq_work;
  };
  

• In 4.18: ✅

  struct ring_buffer {
      unsigned int flags;
      int cpus;
      atomic_t record_disabled;
      atomic_t resize_disabled;
      cpumask_var_t cpumask;
      struct lock_class_key *reader_lock_key;
      struct mutex mutex;
      struct ring_buffer_per_cpu **buffers;
      struct hlist_node node;
      u64 (*clock)();
      struct rb_irq_work irq_work;
      bool time_stamp_abs;
  };
  

• In 5.0: ✅

  struct ring_buffer {
      unsigned int flags;
      int cpus;
      atomic_t record_disabled;
      atomic_t resize_disabled;
      cpumask_var_t cpumask;
      struct lock_class_key *reader_lock_key;
      struct mutex mutex;
      struct ring_buffer_per_cpu **buffers;
      struct hlist_node node;
      u64 (*clock)();
      struct rb_irq_work irq_work;
      bool time_stamp_abs;
  };
  

• In 5.3: ✅

  struct ring_buffer {
      unsigned int flags;
      int cpus;
      atomic_t record_disabled;
      atomic_t resize_disabled;
      cpumask_var_t cpumask;
      struct lock_class_key *reader_lock_key;
      struct mutex mutex;
      struct ring_buffer_per_cpu **buffers;
      struct hlist_node node;
      u64 (*clock)();
      struct rb_irq_work irq_work;
      bool time_stamp_abs;
  };
  

• In 5.4: ✅

  struct ring_buffer {
      unsigned int flags;
      int cpus;
      atomic_t record_disabled;
      atomic_t resize_disabled;
      cpumask_var_t cpumask;
      struct lock_class_key *reader_lock_key;
      struct mutex mutex;
      struct ring_buffer_per_cpu **buffers;
      struct hlist_node node;
      u64 (*clock)();
      struct rb_irq_work irq_work;
      bool time_stamp_abs;
  };
  

• In 5.8: Absent ⚠️
• In 5.11: Absent ⚠️
• In 5.13: Absent ⚠️
• In 5.15: Absent ⚠️
• In 5.19: Absent ⚠️
• In 6.2: Absent ⚠️
• In 6.5: Absent ⚠️
• In 6.8: Absent ⚠️

Arch

• In arm64: ✅

  struct ring_buffer {
      unsigned int flags;
      int cpus;
      atomic_t record_disabled;
      atomic_t resize_disabled;
      cpumask_var_t cpumask;
      struct lock_class_key *reader_lock_key;
      struct mutex mutex;
      struct ring_buffer_per_cpu **buffers;
      struct hlist_node node;
      u64 (*clock)();
      struct rb_irq_work irq_work;
      bool time_stamp_abs;
  };
  

• In armhf: ✅

  struct ring_buffer {
      unsigned int flags;
      int cpus;
      atomic_t record_disabled;
      atomic_t resize_disabled;
      cpumask_var_t cpumask;
      struct lock_class_key *reader_lock_key;
      struct mutex mutex;
      struct ring_buffer_per_cpu **buffers;
      struct hlist_node node;
      u64 (*clock)();
      struct rb_irq_work irq_work;
      bool time_stamp_abs;
  };
  

• In ppc64el: ✅

  struct ring_buffer {
      unsigned int flags;
      int cpus;
      atomic_t record_disabled;
      atomic_t resize_disabled;
      cpumask_var_t cpumask;
      struct lock_class_key *reader_lock_key;
      struct mutex mutex;
      struct ring_buffer_per_cpu **buffers;
      struct hlist_node node;
      u64 (*clock)();
      struct rb_irq_work irq_work;
      bool time_stamp_abs;
  };
  

• In riscv64: ✅

  struct ring_buffer {
      unsigned int flags;
      int cpus;
      atomic_t record_disabled;
      atomic_t resize_disabled;
      cpumask_var_t cpumask;
      struct lock_class_key *reader_lock_key;
      struct mutex mutex;
      struct ring_buffer_per_cpu **buffers;
      struct hlist_node node;
      u64 (*clock)();
      struct rb_irq_work irq_work;
      bool time_stamp_abs;
  };
  

Flavor

• In aws: ✅

  struct ring_buffer {
      unsigned int flags;
      int cpus;
      atomic_t record_disabled;
      atomic_t resize_disabled;
      cpumask_var_t cpumask;
      struct lock_class_key *reader_lock_key;
      struct mutex mutex;
      struct ring_buffer_per_cpu **buffers;
      struct hlist_node node;
      u64 (*clock)();
      struct rb_irq_work irq_work;
      bool time_stamp_abs;
  };
  

• In azure: ✅

  struct ring_buffer {
      unsigned int flags;
      int cpus;
      atomic_t record_disabled;
      atomic_t resize_disabled;
      cpumask_var_t cpumask;
      struct lock_class_key *reader_lock_key;
      struct mutex mutex;
      struct ring_buffer_per_cpu **buffers;
      struct hlist_node node;
      u64 (*clock)();
      struct rb_irq_work irq_work;
      bool time_stamp_abs;
  };
  

• In gcp: ✅

  struct ring_buffer {
      unsigned int flags;
      int cpus;
      atomic_t record_disabled;
      atomic_t resize_disabled;
      cpumask_var_t cpumask;
      struct lock_class_key *reader_lock_key;
      struct mutex mutex;
      struct ring_buffer_per_cpu **buffers;
      struct hlist_node node;
      u64 (*clock)();
      struct rb_irq_work irq_work;
      bool time_stamp_abs;
  };
  

• In lowlatency: ✅

  struct ring_buffer {
      unsigned int flags;
      int cpus;
      atomic_t record_disabled;
      atomic_t resize_disabled;
      cpumask_var_t cpumask;
      struct lock_class_key *reader_lock_key;
      struct mutex mutex;
      struct ring_buffer_per_cpu **buffers;
      struct hlist_node node;
      u64 (*clock)();
      struct rb_irq_work irq_work;
      bool time_stamp_abs;
  };
  

Differences

Regular

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

  • Field added. struct hlist_node node
  • Field removed. struct notifier_block cpu_notify
• No changes between 4.10 and 4.13 ✅
• No changes between 4.13 and 4.15 ✅
• Changed between 4.15 and 4.18 ⚠️

  • Field added. bool time_stamp_abs
• No changes between 4.18 and 5.0 ✅
• No changes between 5.0 and 5.3 ✅
• No changes between 5.3 and 5.4 ✅

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 ✅