find_parent(9)

💅 find_parent(9) — the Kernel API Manual glow-up 🎀

okay so bestie, welcome to find_parent(9) — the little kernel function that goes "who's your mom?" for a brand-new SLA. it lives in the Kernel API Manual and honestly it's giving matchmaker energy 🌸

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✨ SYNOPSIS ✨

struct rl_sla * find_parent (struct adf_rl *rl_data , struct
       adf_rl_sla_input_data *sla_in );

like, that's the whole vibe. returns a struct rl_sla *. no cap. 💅

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🫶 ARGUMENTS 🫶

• rl_data — pointer to ratelimiting data. this is the main-character data structure, the one holding all the RL lore 🔥
• sla_in — pointer to user input data for a new SLA. literally the "hey can you make me one of these" request 💌

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💖 DESCRIPTION 💖

so the function returns a pointer to the parent SLA. that's the whole job, and it ate. 👑

here's the tea though — it's got two paths:

• if the parent ID is provided as input in the user data, then such ID is validated, and the parent SLA is returned. yup, it does a vibe check on that ID first, no shortcuts ✨
• otherwise (no parent ID in the input), it returns the default parent SLA — root or cluster — for the new object. the fallback parent, the safety net, the "don't worry babe i got you" 🧚

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🌈 RETURN 🌈

• Pointer to the parent SLA object 💖
• NULL — when parent cannot be found 😭 (that's the sad path, it happens, don't take it personally)

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🦋 SEE ALSO 🦋

the source of truth is right here in the kernel, bestie:

• Kernel file ./drivers/crypto/intel/qat/qat_common/adf_rl.c — go read it, it's iconic ⭐

and the whole friend group of related functions, all of them, periodt:

• adf_rl_get_sla_arr_of_type(9)
• prepare_rp_ids(9)
• can_parent_afford_sla(9)
• can_node_afford_update(9)
• get_next_free_sla_id(9)
• get_next_free_node_id(9)
• add_new_sla_entry(9)
• add_update_sla(9)
• adf_rl_add_sla(9)
• adf_rl_update_sla(9)
• adf_rl_get_sla(9)
• adf_rl_get_capability_remaining(9)
• adf_rl_remove_sla(9)
• adf_rl_remove_sla_all(9)

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ngl the source path in the footer got truncated to ./drivers/crypto/intel/qat/qat... and the date is October 2026 — so yeah, that's the version-and-date situation, don't come for me, i just report what the page says 🙈

and that's the page!! no notes, absolutely slayed, go find some parents bestie 💜🎀✨