Function report |
Source Code:kernel\rcu\srcutree.c |
Create Date:2022-07-28 10:18:29 |
| Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
| home page | Tree |
| Annotation kernel can get tool activity | Download SCCT | Chinese |
Name:srcu_readers_active - returns true if there are readers. and false* otherwise*@ssp: which srcu_struct to count active readers (holding srcu_read_lock).* Note that this is not an atomic primitive, and can therefore suffer
Proto:static bool srcu_readers_active(struct srcu_struct *ssp)
Type:bool
Parameter:
| Type | Parameter | Name |
|---|---|---|
| struct srcu_struct * | ssp |
| 336 | sum = 0 |
| 338 | for_each_possible_cpu(cpu) |
| 339 | cpuc = per_cpu_ptr(sda, cpu) |
| 341 | sum += READ_ONCE(srcu_lock_count[0]) |
| 342 | sum += READ_ONCE(srcu_lock_count[1]) |
| 343 | sum -= READ_ONCE(srcu_unlock_count[0]) |
| 344 | sum -= READ_ONCE(srcu_unlock_count[1]) |
| 346 | Return sum |
| Name | Describe |
|---|---|
| cleanup_srcu_struct | leanup_srcu_struct - deconstruct a sleep-RCU structure*@ssp: structure to clean up.* Must invoke this after you are finished using a given srcu_struct that* was initialized via init_srcu_struct(), else you leak memory. |
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