ftrace_is_dead(9)

💅 ftrace_is_dead — okay bestie, is ftrace like… alive or not

So this is ftrace_is_dead(9), a page from the Kernel API Manual. Yes we're in the kernel, yes it's section 9, yes it's the kernel/trace girlies. Come on, let's vibe check ftrace. 🫶

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✨ NAME ✨

ftrace_is_dead — literally just testing if ftrace is dead or not. That's it. That's the whole assignment. 💀

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🌸 SYNOPSIS 🌸

int ftrace_is_dead (void );

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🎀 ARGUMENTS 🎀

• void — no arguments, bestie. Nothing. Zero. Empty set. It takes nothing and it's slaying at it. ✨

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🦋 RETURN 🦋

• 1 if ftrace is "dead"
• zero otherwise

That's the whole range, no in-between, no "it's complicated". It's giving binary. 💅

Not me pointing out that the manpage says "zero" and not literally 0 — I'm keeping it exactly as it was written, no cap. 🙈

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💜 SEE ALSO 💜

Okay this is the part where the group chat gets LONG, because ftrace has a lot of friends. Every single one of them, in order, no skipping, I promise:

• Kernel file ./kernel/trace/ftrace.c
• 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_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)
• register_ftrace_function(9)
• unregister_ftrace_function(9)
• ftrace_lookup_symbols(9)

Like… 46 icons in one reference list. The way that ftrace_kill(9) is sitting right there next to all its little siblings is highkey iconic. 🔥

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That's the whole page, bestie — go forth and check if ftrace is dead. 👑

Signed off with love from the ./kernel/trace girlies, manual page dated October 2026, ftrace section 9, kernel API manual energy only. 🧚💖