Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:lib\locking-selftest.c Create Date:2022-07-28 06:50:15
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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Annotation kernel can get tool activityDownload SCCTChinese

Name:irqsafe2A_rlock_21

Proto:static void irqsafe2A_rlock_21(void)

Type:void

Parameter:Nothing

790  Do
790  arch_local_irq_disable()
790  When 0 cycle
790  lock for reading
790  Do
790  arch_local_irq_enable()
790  When 0 cycle
790  lease a read lock
790  local_bh_disable()
790  Do
790  arch_local_irq_disable()
790  When 0 cycle
790  Do
790  When 0 cycle
790  ({
790  __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 )
790  __builtin_expect(!!(__ret_warn_on), 0)
790  })
790  lock for reading
790  lease a read lock
790  Do
790  When 0 cycle
790  Do
790  arch_local_irq_enable()
790  When 0 cycle
790  local_bh_enable()