Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:lib\locking-selftest.c Create Date:2022-07-28 06:50:26
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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Annotation kernel can get tool activityDownload SCCTChinese

Name:irqsafe2B_soft_wlock_21

Proto:static void irqsafe2B_soft_wlock_21(void)

Type:void

Parameter:Nothing

831  local_bh_disable()
831  lock for reading
831  local_bh_enable()
831  lease a read lock
831  local_bh_disable()
831  Do
831  arch_local_irq_disable()
831  When 0 cycle
831  Do
831  When 0 cycle
831  ({
831  __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 )
831  __builtin_expect(!!(__ret_warn_on), 0)
831  })
831  lock for reading
831  lease a read lock
831  Do
831  When 0 cycle
831  Do
831  arch_local_irq_enable()
831  When 0 cycle
831  local_bh_enable()