RCU_IDLE_ENTER(9)                         Driver Basics                         RCU_IDLE_ENTER(9)



NAME
       rcu_idle_enter - inform RCU that current CPU is entering idle

SYNOPSIS
       void rcu_idle_enter(void);

ARGUMENTS
       void
           no 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
Kernel Hackers Manual 4.8.                 January 2017                         RCU_IDLE_ENTER(9)