expr_lookup(9)

✨ NAME ✨

okay so bestie, welcome to the expr_lookup(9) page from the Kernel API Manual 💖 — this one is literally about an expr_lookup function that returns the expression with the given type and sub-nodes.

it looks up an expression with the specified type and sub-nodes. if such an expression is found in the hash table, it is returned. otherwise, a new expression node is allocated and added to the hash table. no cap, that's the whole glow-up ✨

🌸 SYNOPSIS 🌸

struct expr * expr_lookup (enum expr_type type , void *l , void *r );

🎀 ARGUMENTS 🎀

• type — expression type, slay 💅
• l — left node, bestie 🫶
• r — right node, iconic 👑

🦋 RETURN 🦋

expression — that's the vibe you get back 💖

🌈 SEE ALSO 🌈

• Kernel file ./scripts/kconfig/expr.c
• expr_calc_value(9)
• expr_invalidate_all(9)

mwah 💋 — this little page comes from ./scripts/kconfig, dated October 2026. catch u later, bestie 🎀✨