diff options
Diffstat (limited to 'include/linux/irq-entry-common.h')
| -rw-r--r-- | include/linux/irq-entry-common.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/include/linux/irq-entry-common.h b/include/linux/irq-entry-common.h index 8af374331900..4fb2f93d82ed 100644 --- a/include/linux/irq-entry-common.h +++ b/include/linux/irq-entry-common.h @@ -49,6 +49,22 @@ static __always_inline void arch_enter_from_user_mode(struct pt_regs *regs) {} #endif /** + * arch_in_rcu_eqs - Architecture specific check for RCU extended quiescent + * states. + * + * Returns: true if the CPU is potentially in an RCU EQS, false otherwise. + * + * Architectures only need to define this if threads other than the idle thread + * may have an interruptible EQS. This does not need to handle idle threads. It + * is safe to over-estimate at the cost of redundant RCU management work. + * + * Invoked from irqentry_enter() + */ +#ifndef arch_in_rcu_eqs +static __always_inline bool arch_in_rcu_eqs(void) { return false; } +#endif + +/** * enter_from_user_mode - Establish state when coming from user mode * * Syscall/interrupt entry disables interrupts, but user mode is traced as |