Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:lib\locking-selftest.c Create Date:2022-07-28 06:51:21
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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Annotation kernel can get tool activityDownload SCCTChinese

Name:irqsafe4_hard_wlock_321

Proto:static void irqsafe4_hard_wlock_321(void)

Type:void

Parameter:Nothing

916  local_bh_disable()
916  Do
916  arch_local_irq_disable()
916  When 0 cycle
916  Do
916  When 0 cycle
916  ({
916  __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 )
916  __builtin_expect(!!(__ret_warn_on), 0)
916  })
916  lock for reading
916  lease a read lock
916  Do
916  When 0 cycle
916  Do
916  arch_local_irq_enable()
916  When 0 cycle
916  local_bh_enable()
916  lock for reading
916  lease a read lock
916  local_bh_disable()
916  lock for reading
916  lock for reading
916  lease a read lock
916  lease a read lock
916  local_bh_enable()