timer_setup(9)

okay so bestie, this is timer_setup(9) from the Kernel API Manual — literally the page about preparing a timer for first use, and you're gonna slay it 💅✨

🌸 NAME 🌸

timer_setup — prepare a timer for first use 🎀

🦋 SYNOPSIS 🦋

timer_setup (timer , callback , flags );

✨ ARGUMENTS ✨

• timer — the timer in question, bestie. the actual one you're setting up. 💖
• callback — the function to call when timer expires. like, when the timer goes off, this is who gets the group chat notification 🔥
• flags — any TIMER_* flags. no cap, any of those TIMER_* ones.

💜 DESCRIPTION 💜

Regular timer initialization should use either DEFINE_TIMER above, or timer_setup. that's the normal-path vibe, okay? 🫶

For timers on the stack, timer_setup_on_stack must be used and must be balanced with a call to timer_destroy_on_stack. not me stressing this: must be used, and must be balanced with that call. stack timers have rules, bestie 💀

real talk: if you're doing the stack-timer thing, timer_setup_on_stack and timer_destroy_on_stack are a matched set. balanced. periodt. 🎀

🌈 SEE ALSO 🌈

• Kernel file ./include/linux/timer.h
• timer_pending(9)

mwah 💖 this page is from ./include/linux, dated October 2026 — that's the source/version and date energy, and we're obsessed. bye bestie! 🧚✨