cant_sleep(9)

💤 cant_sleep(9) — a Kernel API Manual moment 💤

okay bestie, this is the manual page for cant_sleep(9) from the Kernel API Manual, and it is lowkey iconic. It’s an annotation for functions that cannot sleep — yes, the name is literally the whole vibe. 🫶

🌸 NAME 🌸

cant_sleep — annotation for functions that cannot sleep. No cap, that’s the entire package: it tags functions that cannot sleep. 😴🚫

✨ SYNOPSIS ✨

the whole synopsis is literally just:

cant_sleep

💖 DESCRIPTION 💖

okay so picture this: this macro will print a stack trace if it is executed with preemption enabled. That’s it. That’s the whole behavior. It’s giving “snitch on the stack” energy 😭🔥.

👀 SEE ALSO 👀

go check these besties:

• Kernel file ./include/linux/kernel.h
• might_sleep(9)
• cant_migrate(9)
• non_block_start(9)
• non_block_end(9)
• enum system_states(9)

💅 this has been cant_sleep(9) from source/version ./include/linux, dated October 2026 — mwah, stay iconic bestie 💖✨