ftrace_update_record(9)

💖 NAME 💖

ftrace_update_record — set a record that now is tracing or not ✨

This is the Kernel API Manual page for ftrace_update_record(9), bestie — welcome to the ftrace friend group. 🫶

✨ SYNOPSIS ✨

int ftrace_update_record (struct dyn_ftrace *rec , bool enable );

🎀 ARGUMENTS 🎀

• rec — the record to update
• enable — set to true if the record is tracing, false to force disable

🌸 DESCRIPTION 🌸

The records that represent all functions that can be traced need to be updated when tracing has been enabled. That's the whole job here, and that's literally it — no extra plot twists. 💅

💅 SEE ALSO 💅

Kernel file ./kernel/trace/ftrace.c — here's the whole squad:

• 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_test_record(9)
• ftrace_get_addr_new(9)
• ftrace_get_addr_curr(9)
• ftrace_rec_iter_start(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)

Signed off with source ./kernel/trace, date stamp October 2026, and the page title ftrace_update_record(9). 🎀💖