DepSurf

Function: percpu_down_read_preempt_disable

Status

Regular

• In 4.4: Absent ⚠️
• In 4.8: Absent ⚠️
• In 4.10: Duplicate, Full Inline ⚠️

  Collision: Static Duplication

  Inline: Full

  Transformation: False

  Instances:

  In kernel/fork.c (ffffffff81085cd7)
  Location: include/linux/percpu-rwsem.h:31
  Inline: True
  

  In kernel/signal.c (ffffffff81098897)
  Location: include/linux/percpu-rwsem.h:31
  Inline: True
  Inline callers:
    - kernel/signal.c:exit_signals
  

  In kernel/events/uprobes.c (ffffffff811aa589)
  Location: include/linux/percpu-rwsem.h:31
  Inline: True
  Inline callers:
    - kernel/events/uprobes.c:uprobe_start_dup_mmap
  

  In fs/super.c (ffffffff81248c0e)
  Location: include/linux/percpu-rwsem.h:31
  Inline: True
  

  In fs/exec.c (ffffffff8124ccbc)
  Location: include/linux/percpu-rwsem.h:31
  Inline: True
  

  In fs/locks.c (ffffffff812a40ee)
  Location: include/linux/percpu-rwsem.h:31
  Inline: True
  Inline callers:
    - fs/locks.c:locks_remove_file
    - fs/locks.c:fcntl_getlease
    - fs/locks.c:__break_lease
    - fs/locks.c:__break_lease
    - fs/locks.c:posix_lock_inode
    - fs/locks.c:flock_lock_inode
  

  In fs/ext4/inode.c (ffffffff812df0f8)
  Location: include/linux/percpu-rwsem.h:31
  Inline: True
  Inline callers:
    - fs/ext4/inode.c:ext4_writepages
  

• In 4.13: Duplicate, Full Inline ⚠️

  Collision: Static Duplication

  Inline: Full

  Transformation: False

  Instances:

  In kernel/fork.c (ffffffff810826ec)
  Location: include/linux/percpu-rwsem.h:31
  Inline: True
  

  In kernel/cpu.c (ffffffff810866c1)
  Location: include/linux/percpu-rwsem.h:31
  Inline: True
  Inline callers:
    - kernel/cpu.c:__cpuhp_remove_state
    - kernel/cpu.c:__cpuhp_state_remove_instance
    - kernel/cpu.c:__cpuhp_setup_state
    - kernel/cpu.c:__cpuhp_state_add_instance
  

  In kernel/signal.c (ffffffff81095b32)
  Location: include/linux/percpu-rwsem.h:31
  Inline: True
  Inline callers:
    - kernel/signal.c:exit_signals
  

  In kernel/events/uprobes.c (ffffffff811b1ae9)
  Location: include/linux/percpu-rwsem.h:31
  Inline: True
  Inline callers:
    - kernel/events/uprobes.c:uprobe_start_dup_mmap
  

  In mm/memory_hotplug.c (ffffffff8122c48f)
  Location: include/linux/percpu-rwsem.h:31
  Inline: True
  Inline callers:
    - mm/memory_hotplug.c:restore_online_page_callback
    - mm/memory_hotplug.c:set_online_page_callback
  

  In fs/super.c (ffffffff81254512)
  Location: include/linux/percpu-rwsem.h:31
  Inline: True
  

  In fs/exec.c (ffffffff81258cf3)
  Location: include/linux/percpu-rwsem.h:31
  Inline: True
  

  In fs/locks.c (ffffffff812b2d00)
  Location: include/linux/percpu-rwsem.h:31
  Inline: True
  Inline callers:
    - fs/locks.c:locks_remove_file
    - fs/locks.c:fcntl_getlease
    - fs/locks.c:__break_lease
    - fs/locks.c:__break_lease
    - fs/locks.c:posix_lock_inode
    - fs/locks.c:flock_lock_inode
  

  In fs/ext4/inode.c (ffffffff813032f2)
  Location: include/linux/percpu-rwsem.h:31
  Inline: True
  Inline callers:
    - fs/ext4/inode.c:ext4_writepages
  

• In 4.15: Duplicate, Full Inline ⚠️

  Collision: Static Duplication

  Inline: Full

  Transformation: False

  Instances:

  In kernel/fork.c (ffffffff810894e9)
  Location: include/linux/percpu-rwsem.h:32
  Inline: True
  

  In kernel/cpu.c (ffffffff8108d321)
  Location: include/linux/percpu-rwsem.h:32
  Inline: True
  Inline callers:
    - kernel/cpu.c:__cpuhp_remove_state
    - kernel/cpu.c:__cpuhp_state_remove_instance
    - kernel/cpu.c:__cpuhp_setup_state
    - kernel/cpu.c:__cpuhp_state_add_instance
  

  In kernel/signal.c (ffffffff8109c982)
  Location: include/linux/percpu-rwsem.h:32
  Inline: True
  Inline callers:
    - kernel/signal.c:exit_signals
  

  In kernel/events/uprobes.c (ffffffff811c56f9)
  Location: include/linux/percpu-rwsem.h:32
  Inline: True
  Inline callers:
    - kernel/events/uprobes.c:uprobe_start_dup_mmap
  

  In mm/memory_hotplug.c (ffffffff81247c6f)
  Location: include/linux/percpu-rwsem.h:32
  Inline: True
  Inline callers:
    - mm/memory_hotplug.c:restore_online_page_callback
    - mm/memory_hotplug.c:set_online_page_callback
  

  In fs/super.c (ffffffff81276622)
  Location: include/linux/percpu-rwsem.h:32
  Inline: True
  

  In fs/exec.c (ffffffff8127ae82)
  Location: include/linux/percpu-rwsem.h:32
  Inline: True
  

  In fs/locks.c (ffffffff812d67a0)
  Location: include/linux/percpu-rwsem.h:32
  Inline: True
  Inline callers:
    - fs/locks.c:locks_remove_file
    - fs/locks.c:fcntl_getlease
    - fs/locks.c:__break_lease
    - fs/locks.c:__break_lease
    - fs/locks.c:posix_lock_inode
    - fs/locks.c:flock_lock_inode
  

  In fs/ext4/inode.c (ffffffff81327ce2)
  Location: include/linux/percpu-rwsem.h:32
  Inline: True
  Inline callers:
    - fs/ext4/inode.c:ext4_writepages
  

• In 4.18: Duplicate, Full Inline ⚠️

  Collision: Static Duplication

  Inline: Full

  Transformation: False

  Instances:

  In kernel/fork.c (ffffffff8108cf00)
  Location: include/linux/percpu-rwsem.h:32
  Inline: True
  

  In kernel/cpu.c (ffffffff81090c85)
  Location: include/linux/percpu-rwsem.h:32
  Inline: True
  Inline callers:
    - kernel/cpu.c:__cpuhp_remove_state
    - kernel/cpu.c:__cpuhp_state_remove_instance
    - kernel/cpu.c:__cpuhp_setup_state
    - kernel/cpu.c:__cpuhp_state_add_instance
  

  In kernel/signal.c (ffffffff810a0d82)
  Location: include/linux/percpu-rwsem.h:32
  Inline: True
  Inline callers:
    - kernel/signal.c:exit_signals
  

  In kernel/events/uprobes.c (ffffffff811e5c35)
  Location: include/linux/percpu-rwsem.h:32
  Inline: True
  Inline callers:
    - kernel/events/uprobes.c:uprobe_start_dup_mmap
  

  In mm/memory_hotplug.c (ffffffff8126bba5)
  Location: include/linux/percpu-rwsem.h:32
  Inline: True
  Inline callers:
    - mm/memory_hotplug.c:restore_online_page_callback
    - mm/memory_hotplug.c:set_online_page_callback
  

  In fs/super.c (ffffffff8129c30d)
  Location: include/linux/percpu-rwsem.h:32
  Inline: True
  

  In fs/exec.c (ffffffff812a2566)
  Location: include/linux/percpu-rwsem.h:32
  Inline: True
  

  In fs/locks.c (ffffffff81301430)
  Location: include/linux/percpu-rwsem.h:32
  Inline: True
  Inline callers:
    - fs/locks.c:locks_remove_file
    - fs/locks.c:fcntl_getlease
    - fs/locks.c:__break_lease
    - fs/locks.c:__break_lease
    - fs/locks.c:posix_lock_inode
    - fs/locks.c:flock_lock_inode
  

  In fs/ext4/inode.c (ffffffff813501ff)
  Location: include/linux/percpu-rwsem.h:32
  Inline: True
  Inline callers:
    - fs/ext4/inode.c:ext4_dax_writepages
    - fs/ext4/inode.c:ext4_writepages
  

• In 5.0: Duplicate, Full Inline ⚠️

  Collision: Static Duplication

  Inline: Full

  Transformation: False

  Instances:

  In kernel/fork.c (ffffffff81094a26)
  Location: include/linux/percpu-rwsem.h:32
  Inline: True
  

  In kernel/cpu.c (ffffffff81098d45)
  Location: include/linux/percpu-rwsem.h:32
  Inline: True
  Inline callers:
    - kernel/cpu.c:__cpuhp_remove_state
    - kernel/cpu.c:__cpuhp_state_remove_instance
    - kernel/cpu.c:__cpuhp_setup_state
    - kernel/cpu.c:__cpuhp_state_add_instance
  

  In kernel/signal.c (ffffffff810a91c2)
  Location: include/linux/percpu-rwsem.h:32
  Inline: True
  Inline callers:
    - kernel/signal.c:exit_signals
  

  In kernel/events/uprobes.c (ffffffff811f6785)
  Location: include/linux/percpu-rwsem.h:32
  Inline: True
  Inline callers:
    - kernel/events/uprobes.c:uprobe_start_dup_mmap
  

  In mm/memory_hotplug.c (ffffffff812804a5)
  Location: include/linux/percpu-rwsem.h:32
  Inline: True
  Inline callers:
    - mm/memory_hotplug.c:restore_online_page_callback
    - mm/memory_hotplug.c:set_online_page_callback
  

  In fs/super.c (ffffffff812b144d)
  Location: include/linux/percpu-rwsem.h:32
  Inline: True
  

  In fs/exec.c (ffffffff812b7145)
  Location: include/linux/percpu-rwsem.h:32
  Inline: True
  

  In fs/locks.c (ffffffff81316f1c)
  Location: include/linux/percpu-rwsem.h:32
  Inline: True
  Inline callers:
    - fs/locks.c:locks_remove_file
    - fs/locks.c:fcntl_getlease
    - fs/locks.c:__break_lease
    - fs/locks.c:__break_lease
    - fs/locks.c:posix_lock_inode
    - fs/locks.c:flock_lock_inode
  

  In fs/ext4/inode.c (ffffffff8136855f)
  Location: include/linux/percpu-rwsem.h:32
  Inline: True
  Inline callers:
    - fs/ext4/inode.c:ext4_dax_writepages
    - fs/ext4/inode.c:ext4_writepages
  

• In 5.3: Absent ⚠️
• In 5.4: Absent ⚠️
• 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: Absent ⚠️
• In armhf: Absent ⚠️
• In ppc64el: Absent ⚠️
• In riscv64: Absent ⚠️

Flavor

• In aws: Absent ⚠️
• In azure: Absent ⚠️
• In gcp: Absent ⚠️
• In lowlatency: Absent ⚠️

Differences