wq_has_sleeper(9)

✨ wq_has_sleeper(9) ✨

okay so bestie, welcome to the wq_has_sleeper(9) page 💅 this is a little kernel API manual situation and honestly it's giving tiny-but-mighty. it's a function that just wants to know one thing: is anybody waiting?? 👀

---

🌸 NAME 🌸

wq_has_sleeper — check if there are any waiting processes 🫶

like, that's it. that's the whole job. she's a vibe check for sleeping tasks.

---

🎀 SYNOPSIS 🎀

bool wq_has_sleeper (struct wait_queue_head *wq_head );

---

🦋 ARGUMENTS 🦋

• wq_head — the wait queue head 💖 (yes, that's the whole description, she's lowkey mysterious like that)

---

⭐ DESCRIPTION ⭐

Returns true if wq_head has waiting processes 🔥 so like, if the answer is "yes bestie, people are queued up," you get true. no cap.

also!! pls pls pls refer to the comment for waitqueue_active — that's where the real lore lives, iykyk 🙈 it's literally the same energy, so go read that before you come for her.

---

👑 SEE ALSO 👑

Kernel file ./include/linux/wait.h — yes that's the file, go look at it 🧚, and then the whole wait-queue extended universe:

• waitqueue_active(9)
• wq_has_single_sleeper(9)
• wake_up_pollfree(9)
• wait_event(9)
• wait_event_freezable(9)
• wait_event_timeout(9)
• wait_event_cmd(9)
• wait_event_interruptible(9)
• wait_event_interruptible_timeout(9)
• wait_event_hrtimeout(9)
• wait_event_interruptible_hrtimeout(9)
• wait_event_idle(9)
• wait_event_idle_exclusive(9)
• wait_event_idle_timeout(9)
• wait_event_idle_exclusive_timeout(9)
• wait_event_interruptible_locked(9)
• wait_event_interruptible_locked_irq(9)
• wait_event_interruptible_exclusive_locked(9)
• wait_event_interruptible_exclusive_locked_irq(9)
• wait_event_killable(9)
• wait_event_state(9)
• wait_event_killable_timeout(9)
• wait_event_lock_irq_cmd(9)
• wait_event_lock_irq(9)
• wait_event_interruptible_lock_irq_cmd(9)
• wait_event_interruptible_lock_irq(9)
• wait_event_interruptible_lock_irq_timeout(9)

like… that's a whole friend group and wq_has_sleeper is absolutely in it 💀💜

---

okay that's the page!! sign-off time 🎀 this precious lil thing ships from ./include/linux and dated October 2026 — iconic behavior fr fr, periodt 💅✨🫶