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RCU_IDLE_EXIT(9) Driver Basics RCU_IDLE_EXIT(9)

NAME

rcu_idle_exit - inform RCU that current CPU is leaving idle

SYNOPSIS

void rcu_idle_exit(void);

ARGUMENTS

void
no arguments

DESCRIPTION

Exit idle mode, in other words, -enter- the mode in which RCU read-side critical sections can occur.
We crowbar the ->dynticks_nesting field to DYNTICK_TASK_NEST to allow for the possibility of usermode upcalls messing up our count of interrupt nesting level during the busy period that is just now starting.

COPYRIGHT

February 2017 Kernel Hackers Manual 3.16