Function report |
Source Code:kernel\rcu\tree.c |
Create Date:2022-07-28 10:25:38 |
Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
home page | Tree |
Annotation kernel can get tool activity | Download SCCT | Chinese |
Name:Enter an RCU extended quiescent state, which can be either the* idle loop or adaptive-tickless usermode execution.* We crowbar the ->dynticks_nmi_nesting field to zero to allow for* the possibility of usermode upcalls having messed up our count
Proto:static void rcu_eqs_enter(bool user)
Type:void
Parameter:
Type | Parameter | Name |
---|---|---|
bool | user |
568 | rdp = this_cpu_ptr( & rcu_data) |
570 | WARN_ON_ONCE(Track irq/NMI nesting level. != Offset to allow distinguishing irq vs. task-based idle entry/exit. ) |
571 | WRITE_ONCE(Track irq/NMI nesting level. , 0) |
572 | WARN_ON_ONCE(IS_ENABLED(CONFIG_FOO) evaluates to 1 if CONFIG_FOO is set to 'y' or 'm',* 0 otherwise.(CONFIG_RCU_EQS_DEBUG) && Track process nesting level. == 0) |
574 | If Track process nesting level. != 1 Then |
575 | Track process nesting level. -- |
576 | Return |
582 | rdp = this_cpu_ptr( & rcu_data) |
584 | rcu_prepare_for_idle() |
586 | WRITE_ONCE(Track process nesting level. , 0) |
588 | rcu_dynticks_task_enter() |
Name | Describe |
---|---|
rcu_idle_enter | _idle_enter - inform RCU that current CPU is entering idle* Enter idle mode, in other words, -leave- the mode in which RCU* read-side critical sections can occur. (Though RCU read-side* critical sections can occur in irq handlers in idle, a possibility |
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