tcf_em_unregister(9)

✨ tcf_em_unregister(9) ✨

okay so bestie, we're in the Kernel API Manual today and this one's a lil goodbye note 🫶 it lives in tcf_em_unregister(9) land and it's short, sweet, and honestly kinda emotional.

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💅 NAME 💅

tcf_em_unregister — unregister and extended match

(yes that's the exact wording, no I'm not fixing it, it's iconic as-is 👑)

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🎀 SYNOPSIS 🎀

void tcf_em_unregister (struct tcf_ematch_ops *ops );

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🌸 ARGUMENTS 🌸

• ops — the ematch operations lookup table, aka the whole personality of the ematch you're saying bye to 🌈

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💖 DESCRIPTION 💖

okay so here's the vibe: this function must be called by ematches to announce their disappearance, like when the module gets unloaded 👋 it's the "i'm leaving the group chat" of kernel functions fr fr.

the ops parameter must be the same as the one used for registration — no swapping it out for a lookalike, bestie, it's gotta be the exact same one 💀

Returns -ENOENT if no matching ematch was found 😭 so if you get that back, your ematch wasn't even there to begin with, awkward.

ngl this is a small function but skipping it is not the move — ematches need their little farewell moment or things get messy 🙈

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🦋 SEE ALSO 🦋

• Kernel file ./net/sched/ematch.c (the mothership 💫)
• tcf_em_register(9)
• tcf_em_tree_validate(9)
• tcf_em_tree_destroy(9)
• tcf_em_tree_dump(9)

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and that's the whole page, bestie, slay ✨ this one came straight out of ./net/sched and it's dated October 2026 — signed, sealed, tcf_em_unregister(9), periodt 💅💜