timer_init_key(9)

timer_init_key(9) — initialize a timer 💅

okay so bestie, welcome to the Kernel API Manual, section 9. This page is literally all about timer_init_key, and it's lowkey iconic because it's a whole prerequisite situation. Let's get into it. ✨

🌸 NAME 🌸

timer_init_key — initialize a timer ✨

🦋 SYNOPSIS 🦋

This is the exact signature, character for character, no cap:

void timer_init_key (struct timer_list *timer , void (*func)(struct
timer_list *) , unsigned int flags , const char *name , struct
lock_class_key *key );

🎀 ARGUMENTS 🎀

• timer — the timer to be initialized (the main character here 💖)
• func — timer callback function
• flags — timer flags
• name — name of the timer
• key — lockdep class key of the fake lock used for tracking timer sync lock dependencies

🔥 DESCRIPTION 🔥

okay so here's the vibe: timer_init_key must be done to a timer prior to calling any of the other timer functions. any — like, do not pass go, do not collect $200. It's giving prerequisite, and it is not playing. 💅

🌈 SEE ALSO 🌈

Kernel file: ./kernel/time/timer.c

and the whole SEE ALSO bestie lineup, in order:

• struct timer_base(9)
• __round_jiffies_relative(9)
• round_jiffies(9)
• round_jiffies_relative(9)
• __round_jiffies_up_relative(9)
• round_jiffies_up(9)
• round_jiffies_up_relative(9)
• mod_timer_pending(9)
• mod_timer(9)
• timer_reduce(9)
• add_timer(9)
• add_timer_local(9)
• add_timer_global(9)
• add_timer_on(9)
• __timer_delete(9)
• timer_delete(9)
• timer_shutdown(9)
• __try_to_del_timer_sync(9)
• timer_delete_sync_try(9)
• __timer_delete_sync(9)
• timer_delete_sync(9)
• timer_shutdown_sync(9)
• fetch_next_timer_interrupt_remote(9)
• timer_unlock_remote_bases(9)
• timer_lock_remote_bases(9)
• timer_base_is_idle(9)
• timer_expire_remote(9)
• get_next_timer_interrupt(9)
• timer_base_try_to_set_idle(9)
• timer_clear_idle(9)
• __run_timers(9)

later bestie! this page is from ./kernel/time, dated October 2026, and it's all timer_init_key(9) in the Kernel API Manual. periodt. 🫶