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RCU_IDLE_ENTER(9) | Driver Basics | RCU_IDLE_ENTER(9) |
NAME¶
rcu_idle_enter - inform RCU that current CPU is entering idleSYNOPSIS¶
void rcu_idle_enter(void);
ARGUMENTS¶
voidno arguments
DESCRIPTION¶
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 handled by irq_enter and irq_exit.) We crowbar the ->dynticks_nesting field to zero to allow for the possibility of usermode upcalls having messed up our count of interrupt nesting level during the prior busy period.COPYRIGHT¶
January 2017 | Kernel Hackers Manual 4.8. |