ftrace_free_filter(9)

💅 ftrace_free_filter — like, the whole kernel API manual vibe

okay so bestie, welcome to the ftrace_free_filter(9) page, straight out of the Kernel API Manual ✨ this one's short and sweet but it's lowkey important, so pay attention 🫶

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🌸 NAME 🌸

ftrace_free_filter — removes all the filters for an ftrace_ops 💅

no, not some filters. not a filter. all of them. it's giving "clean slate" energy and we're obsessed 🎀

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✨ SYNOPSIS ✨

void ftrace_free_filter (struct ftrace_ops *ops );

that's it. that's the whole signature. void return, one pointer argument, no drama 🔥

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🦋 ARGUMENTS 🦋

• ops — the ops you want to strip the filters off of 🧹 like, hand over your struct ftrace_ops and this function will take every filter away from it. the ops to remove the filters from, fr fr.

ngl bestie, this page is not a long read. it's a two-line wonder and honestly? iconic 👑

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💜 SEE ALSO 💜

the kernel file lives at ./kernel/trace/ftrace.c, and here's the whole friend group — every single one of them, no cap, no skips 🌈

• ftrace_lookup_ip(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)
• ftrace_is_dead(9)
• register_ftrace_function(9)
• unregister_ftrace_function(9)
• ftrace_lookup_symbols(9)

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and that's the whole page, bestie!! 🎀 this lil cutie comes to you from ./kernel/trace, dated October 2026, and it's filed under ftrace_free_filter(9) in the Kernel API Manual 💖 go forth and free those filters, you absolute main character 👑✨