ftrace_graph_stop(9)

💅 ftrace_graph_stop(9) — the "okay everyone go home" button

okay so real talk, this page lives in the Kernel API Manual and it's about ftrace_graph_stop(9), which is genuinely one of those tiny functions with main character energy because it only shows up when things are going feral. 🫶

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✨ NAME ✨

ftrace_graph_stop — set to permanently disable function graph tracing

like, permanently permanently. not "brb" permanently. 💀

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✨ SYNOPSIS ✨

void ftrace_graph_stop (void );

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✨ ARGUMENTS ✨

• void — no arguments. none. zero. she takes nothing and she gives no chances. 🎀

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✨ DESCRIPTION ✨

so bestie, imagine function graph tracing hits an error and starts being a menace. this is the function that gets called to try and keep function graph tracing from causing any more harm. 🛑

(also, tiny icon thing: the original page literally says "an error int function graph tracing" — yes, int, not in. we are preserving the typo exactly bc we respect the source. iykyk 😭)

usually this situation is pretty severe, and it's called so that at the very least a warning gets out to the user. that's the whole vibe: damage control plus a little "hey, heads up" for you. no cap, if you're seeing this one fire, you're not having a good day. 🌸

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🌈 SEE ALSO 🌈

kernel file ./kernel/trace/fgraph.c, and the whole friend group:

• fgraph_reserve_data(9)
• fgraph_retrieve_data(9)
• fgraph_get_task_var(9)
• fgraph_retrieve_parent_data(9)
• ftrace_graph_get_ret_stack(9)
• ftrace_graph_top_ret_addr(9)
• ftrace_graph_ret_addr(9)

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and that's the whole page, bestie, you ate it 🍓

sign-off time: this little icon comes to you from the source dir ./kernel/trace, stamped October 2026, filed under ftrace_graph_stop(9) in the Kernel API Manual. slay, go read some kernel code, mwah 💜🧚