Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:lib\atomic64.c Create Date:2022-07-28 07:17:15
Last Modify:2022-05-18 13:46:02 Copyright©Brick
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Name:atomic64_fetch_sub

Proto:s64 atomic64_fetch_sub(s64 a, atomic64_t *v)

Type:s64

Parameter:

TypeParameterName
s64a
atomic64_t *v
123  lock = lock_addr(v)
123  Do
123  ({
123  __dummy == __dummy2
123  1
123  })
123  Do
123  Do
123  Do
123  ({
123  __dummy == __dummy2
123  1
123  })
123  flags = For spinlocks, etc:
123  When 0 cycle
123  When 0 cycle
123  Do
123  __asm__ __volatile__
123  Do
123  0
123  When 0 cycle
123  When 0 cycle
123  When 0 cycle
123  When 0 cycle
123  val = counter
123  counter -= a
123  Do
123  ({
123  __dummy == __dummy2
123  1
123  })
123  Do
123  Do
123  Do
123  ({
123  __dummy == __dummy2
123  1
123  })
123  arch_local_irq_restore(flags)
123  When 0 cycle
123  When 0 cycle
123  Do
123  __asm__ __volatile__
123  Do
123  0
123  When 0 cycle
123  When 0 cycle
123  When 0 cycle
123  When 0 cycle
123  Return val