rcu_irq_exit_check_preempt(9)

💖 NAME 💖

okay so bestie, welcome to the Kernel API Manual page for rcu_irq_exit_check_preempt(9) — and the name is literally doing the most: rcu_irq_exit_check_preempt — Validate that scheduling is possible. that’s the whole assignment. 💅✨

🌸 SYNOPSIS 🌸

void rcu_irq_exit_check_preempt (void );

that signature said what it said — void in, void out, no cap. 🫶

🎀 ARGUMENTS 🎀

• void — no arguments. literally none. not a single one. the function takes nothing, periodt. 💀💖

🦋 SEE ALSO 🦋

the kernel file is ./kernel/rcu/tree.c, and if you’re doing a lil RCU deep dive, these related pages are right there:

• rcu_softirq_qs(9)
• rcu_watching_snap_stopped_since(9)
• rcu_is_cpu_rrupt_from_idle(9)
• __rcu_irq_enter_check_tick(9)
• rcu_is_watching(9)
• rcu_set_gpwrap_lag(9)
• call_rcu_hurry(9)
• call_rcu(9)
• synchronize_rcu(9)
• get_completed_synchronize_rcu_full(9)
• get_state_synchronize_rcu(9)
• get_state_synchronize_rcu_full(9)
• start_poll_synchronize_rcu(9)
• start_poll_synchronize_rcu_full(9)
• poll_state_synchronize_rcu(9)
• poll_state_synchronize_rcu_full(9)
• cond_synchronize_rcu(9)
• cond_synchronize_rcu_full(9)
• rcu_barrier(9)
• rcu_barrier_throttled(9)

sign-off time, bestie 🎀 this cutie comes from ./kernel/rcu, dated October 2026, and the page is rcu_irq_exit_check_preempt(9) — mwah, bye bestie! 💋💖