update_preds(9)

🌸 update_preds — assign a program entry a label target 🌸

okay so bestie, this is update_preds(9) from the Kernel API Manual, and it's lowkey iconic kernel-internals business. no cap, it's all about poking a program entry and sorting out its label target. 💅

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✨ NAME ✨

update_preds — assign a program entry a label target

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🎀 SYNOPSIS 🎀

void update_preds (struct prog_entry *prog , int N , int invert );

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🫶 ARGUMENTS 🫶

• prog — the program array, aka the whole lineup of entries we're working with.
• N — the index of the current entry in prog.
• invert — what to assign a program entry for its branch condition.

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💖 DESCRIPTION 💖

okay so picture this: the program entry at index N has a target that points to the index of a program entry that can have its target and when_to_branch fields updated. update_preds() updates the current program entry denoted by index N so its target field becomes that of the updated entry. this is the bit that will denote the entry to update if we are processing an "||" after an "&&". periodt. ✨

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🦋 SEE ALSO 🦋

• Kernel file ./kernel/trace/trace_events_filter.c
• struct prog_entry(9)
• filter_parse_regex(9)
• create_filter(9)
• create_system_filter(9)

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kisses, bestie 💖 this whole vibe lives under ./kernel/trace, and it's dated October 2026 — the page is update_preds(9), and yes, she ate. 🎀👑