diff options
Diffstat (limited to 'kernel/rcutree_plugin.h')
| -rw-r--r-- | kernel/rcutree_plugin.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/kernel/rcutree_plugin.h b/kernel/rcutree_plugin.h index eab81da..a7419ce 100644 --- a/kernel/rcutree_plugin.h +++ b/kernel/rcutree_plugin.h @@ -2378,6 +2378,23 @@ static void rcu_kick_nohz_cpu(int cpu) #ifdef CONFIG_NO_HZ_FULL_SYSIDLE /* + * Define RCU flavor that holds sysidle state. This needs to be the + * most active flavor of RCU. + */ +#ifdef CONFIG_PREEMPT_RCU +static struct rcu_state __maybe_unused *rcu_sysidle_state = &rcu_preempt_state; +#else /* #ifdef CONFIG_PREEMPT_RCU */ +static struct rcu_state __maybe_unused *rcu_sysidle_state = &rcu_sched_state; +#endif /* #else #ifdef CONFIG_PREEMPT_RCU */ + +static int __maybe_unused full_sysidle_state; /* Current system-idle state. */ +#define RCU_SYSIDLE_NOT 0 /* Some CPU is not idle. */ +#define RCU_SYSIDLE_SHORT 1 /* All CPUs idle for brief period. */ +#define RCU_SYSIDLE_LONG 2 /* All CPUs idle for long enough. */ +#define RCU_SYSIDLE_FULL 3 /* All CPUs idle, ready for sysidle. */ +#define RCU_SYSIDLE_FULL_NOTED 4 /* Actually entered sysidle state. */ + +/* * Invoked to note exit from irq or task transition to idle. Note that * usermode execution does -not- count as idle here! After all, we want * to detect full-system idle states, not RCU quiescent states and grace |