Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:lib\locking-selftest.c Create Date:2022-07-28 06:51:13
Last Modify:2020-03-12 14:18:49 Copyright©Brick
home page Tree
Annotation kernel can get tool activityDownload SCCTChinese

Name:irqsafe4_hard_rlock_231

Proto:static void irqsafe4_hard_rlock_231(void)

Type:void

Parameter:Nothing

913  lock for reading
913  lease a read lock
913  local_bh_disable()
913  Do
913  arch_local_irq_disable()
913  When 0 cycle
913  Do
913  When 0 cycle
913  ({
913  __ret_warn_on = Not Not Not (We mask the PREEMPT_NEED_RESCHED bit so as not to confuse all current users* that think a non-zero value indicates we cannot preempt. & (1UL << 8) - 1 << 0 + 8 )
913  __builtin_expect(!!(__ret_warn_on), 0)
913  })
913  lock for reading
913  lease a read lock
913  Do
913  When 0 cycle
913  Do
913  arch_local_irq_enable()
913  When 0 cycle
913  local_bh_enable()
913  local_bh_disable()
913  lock for reading
913  lock for reading
913  lease a read lock
913  lease a read lock
913  local_bh_enable()