Function report |
Source Code:kernel\locking\qspinlock.c |
Create Date:2022-07-28 09:51:37 |
| Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
| home page | Tree |
| Annotation kernel can get tool activity | Download SCCT | Chinese |
Name:decode_tail
Proto:static inline __pure struct mcs_spinlock *decode_tail(unsigned int tail)
Type:struct mcs_spinlock
Parameter:
| Type | Parameter | Name |
|---|---|---|
| unsigned int | tail |
| 126 | cpu = (tail >> _Q_TAIL_CPU_OFFSET) - 1 |
| 127 | idx = (tail & _Q_TAIL_IDX_MASK) >> _Q_TAIL_IDX_OFFSET |
| 129 | Return per_cpu_ptr( & mcs, cpu) |
| Name | Describe |
|---|---|
| queued_spin_lock_slowpath | queued_spin_lock_slowpath - acquire the queued spinlock*@lock: Pointer to queued spinlock structure*@val: Current value of the queued spinlock 32-bit word* (queue tail, pending bit, lock value)* fast : slow : unlock* : :* uncontended (0,0,0) -:--> (0,0,1) |
| Source code conversion tool public plug-in interface | X |
|---|---|
| Support c/c++/esqlc/java Oracle/Informix/Mysql Plug-in can realize: logical Report Code generation and batch code conversion |