init_fsm(9)

💖 init_fsm(9) — Kernel API Manual 💖

okay bestie, welcome to the init_fsm(9) page — yes, that's the manual name, and we're in Kernel API Manual territory ✨. This is the whole "make a finite state machine happen" situation, and it's lowkey iconic 💅.

🎀 NAME 🎀

init_fsm — creates a finite state machine. literally the glow-up moment for your states and events, no cap 💖

✨ SYNOPSIS ✨

       fsm_instance * init_fsm (char *name , const char **state_names , const
       char **event_names , int nr_states , int nr_events , const fsm_node
       *tmpl , int tmpl_len , gfp_t order );

🫶 ARGUMENTS 🫶

• name — name of this instance, for logging purposes. give your FSM a name, bestie 🏷️
• state_names — array of names for all states, for logging purposes. every state gets a lil label ✨
• event_names — array of names for all events, for logging purposes. same energy for events 🎀
• nr_states — number of states for this instance. count 'em 👑
• nr_events — number of events for this instance. count those too 💅
• tmpl — pointer to fsm_node array describing this FSM. this is the blueprint, iykyk 🦋
• tmpl_len — number of entries in the tmpl array. how many blueprint rows we're working with 🍓
• order — GFP flags for memory allocation (e.g. GFP_KERNEL). memory allocation vibes, literally 🌈

🦋 DESCRIPTION 🦋

okay so this function allocates and initializes a finite state machine instance with the specified states, events, and transition table. that's the whole assignment, and it ate 💅✨

🌸 RETURN 🌸

Returns a pointer to the initialized FSM instance, or NULL on failure. NULL means failure, periodt 😭🫶

💜 SEE ALSO 💜

• the kernel file ./drivers/s390/net/fsm.h — go look at the source, bestie 📁
• kfree_fsm(9)
• fsm_event(9)
• fsm_newstate(9)
• fsm_getstate(9)
• fsm_getstate_str(9)
• fsm_settimer(9)
• fsm_deltimer(9)
• fsm_addtimer(9)
• fsm_modtimer(9)

mwah 💋 this page comes from ./drivers/s390/net, dated October 2026, and it's the init_fsm(9) manual page. byeee 🫶🎀