Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:lib\locking-selftest.c Create Date:2022-07-28 06:50:05
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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Annotation kernel can get tool activityDownload SCCTChinese

Name:irqsafe1_hard_wlock_12

Proto:static void irqsafe1_hard_wlock_12(void)

Type:void

Parameter:Nothing

749  Do
749  arch_local_irq_disable()
749  When 0 cycle
749  Do
749  account_irq_enter_time(get_current())
749  The various preempt_count add/sub methods
749  Do
749  When 0 cycle
749  When 0 cycle
749  ({
749  __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 << 4) - 1 << 0 + 8 + 8 )
749  __builtin_expect(!!(__ret_warn_on), 0)
749  })
749  lock for reading
749  lease a read lock
749  Do
749  Do
749  When 0 cycle
749  account_irq_exit_time(get_current())
749  __preempt_count_sub((1UL << ((0 + 8) + 8)))
749  When 0 cycle
749  Do
749  arch_local_irq_enable()
749  When 0 cycle
749  lock for reading
749  lease a read lock