Function report |
Source Code:kernel\rcu\sync.c |
Create Date:2022-07-28 10:18:01 |
| Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
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| Annotation kernel can get tool activity | Download SCCT | Chinese |
Name:_sync_exit() - Allow readers back onto fast path after grace period*@rsp: Pointer to rcu_sync structure to use for synchronization* This function is used by updaters who have completed, and can therefore* now allow readers to make use of their fastpaths
Proto:void rcu_sync_exit(struct rcu_sync *rsp)
Type:void
Parameter:
| Type | Parameter | Name |
|---|---|---|
| struct rcu_sync * | rsp |
| 170 | WARN_ON_ONCE(READ_ONCE(gp_state) == GP_IDLE) |
| 171 | WARN_ON_ONCE(READ_ONCE(gp_count) == 0) |
| 173 | spin_lock_irq( & rss_lock) |
| 174 | If Not --gp_count Then |
| 176 | WRITE_ONCE(gp_state, GP_EXIT) |
| 177 | rcu_sync_call(rsp) |
| 179 | WRITE_ONCE(gp_state, GP_REPLAY) |
| 182 | spin_unlock_irq( & rss_lock) |
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