Function report |
Source Code:kernel\printk\printk.c |
Create Date:2022-07-28 10:06:32 |
| Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
| home page | Tree |
| Annotation kernel can get tool activity | Download SCCT | Chinese |
Name:sole_lock_spinning_disable_and_check - mark end of code where another* thread was able to busy wait and check if there is a waiter* This is called at the end of the section where spinning is allowed.* It has two functions
Proto:static int console_lock_spinning_disable_and_check(void)
Type:int
Parameter:Nothing
| 1676 | raw_spin_lock( & console_owner_lock) |
| 1677 | waiter = READ_ONCE(console_waiter) |
| 1678 | console_owner = NULL |
| 1679 | raw_spin_unlock( & console_owner_lock) |
| 1681 | If Not waiter Then |
| 1682 | spin_release( & console_owner_dep_map, _THIS_IP_) |
| 1683 | Return 0 |
| 1687 | WRITE_ONCE(console_waiter, false) |
| 1689 | spin_release( & console_owner_dep_map, _THIS_IP_) |
| 1695 | mutex_release( & console_lock_dep_map, _THIS_IP_) |
| 1696 | Return 1 |
| Name | Describe |
|---|---|
| console_unlock | sole_unlock - unlock the console system* Releases the console_lock which the caller holds on the console system* and the console driver list.* While the console_lock was held, console output may have been buffered* by printk() |
| Source code conversion tool public plug-in interface | X |
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