ftrace_rec_iter_start(9)

okay so bestie, this is ftrace_rec_iter_start(9), and you’re reading the Kernel API Manual entry for it. It’s giving “tiny but important ftrace iterator starter” energy, and we’re gonna get through every detail together. 💖

✨ NAME ✨

ftrace_rec_iter_start — start up iterating over traced functions. That’s the whole vibe: you’re kicking off the iteration situation. 🎀

🎀 SYNOPSIS 🎀

struct ftrace_rec_iter * ftrace_rec_iter_start (void );

💅 ARGUMENTS 💅

• void — no arguments, bestie. Literally none. Nothing to pass in, nothing to stress about. 💅

🌸 RETURN 🌸

It hands back an iterator handle — that’s the thing you use to iterate over all the records that represent address locations where functions are traced. So yeah, it’s your little handle for walking the traced-function records. ✨

🦋 DESCRIPTION 🦋

Heads up: it may return NULL if no records are available. No records, no handle — that’s the rule. 😭

🔥 SEE ALSO 🔥

The kernel file for this one is ./kernel/trace/ftrace.c, and the related-man-page group chat is stacked. Go check out:

• ftrace_lookup_ip(9)
• ftrace_free_filter(9)
• ftrace_hash_move(9)
• ftrace_location_range(9)
• ftrace_location(9)
• ftrace_text_reserved(9)
• ftrace_bug(9)
• ftrace_update_record(9)
• ftrace_test_record(9)
• ftrace_get_addr_new(9)
• ftrace_get_addr_curr(9)
• ftrace_rec_iter_next(9)
• ftrace_rec_iter_record(9)
• ftrace_run_stop_machine(9)
• arch_ftrace_update_code(9)
• ftrace_startup_subops(9)
• ftrace_shutdown_subops(9)
• ftrace_regex_open(9)
• allocate_ftrace_func_mapper(9)
• ftrace_func_mapper_find_ip(9)
• ftrace_func_mapper_add_ip(9)
• ftrace_func_mapper_remove_ip(9)
• free_ftrace_func_mapper(9)
• register_ftrace_direct(9)
• unregister_ftrace_direct(9)
• modify_ftrace_direct_nolock(9)
• modify_ftrace_direct(9)
• hash_add(9)
• update_ftrace_direct_add(9)
• hash_sub(9)
• update_ftrace_direct_del(9)
• update_ftrace_direct_mod(9)
• ftrace_set_filter_ip(9)
• ftrace_set_filter_ips(9)
• ftrace_ops_set_global_filter(9)
• ftrace_set_filter(9)
• ftrace_set_notrace(9)
• ftrace_set_global_filter(9)
• ftrace_set_global_notrace(9)
• ftrace_ops_get_func(9)
• ftrace_kill(9)
• ftrace_is_dead(9)
• register_ftrace_function(9)
• unregister_ftrace_function(9)
• ftrace_lookup_symbols(9)

mwah 💋 — this page comes from ./kernel/trace, dated October 2026, and the title is ftrace_rec_iter_start(9). Bye bestie! 🫶