freq_qos_read_value(9)

💅 freq_qos_read_value — Kernel API Manual, section 9 🎀

okay so bestie, welcome to the glow-up era of freq_qos_read_value 💖 this little icon lives in the Kernel API Manual, section 9, and it is literally the main character of "hey what's the current frequency QoS constraint on this list bestie?" ✨

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🌸 NAME 🌸

freq_qos_read_value — get the frequency QoS constraint for a given list. no cap, that's the whole vibe 🫶

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✨ SYNOPSIS ✨

s32 freq_qos_read_value (struct freq_constraints *qos , enum freq_qos_req_type type );

it's giving "returns an s32, takes two args, slays" 💅

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🦋 ARGUMENTS 🦋

• qos — the constraints we're evaluating, i.e. the list we're snooping on 👀 this is the thing you pass in so it can be evaluated.
• type — the QoS request type. yes bestie, the kind of request matters, so tell it which one 🎀

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🔥 SEE ALSO 🔥

• the kernel file ./kernel/power/qos.c — that's the home base for all of this 🏠
• pm_qos_read_value(9)
• pm_qos_update_target(9)
• pm_qos_flags_remove_req(9)
• pm_qos_update_flags(9)
• cpu_latency_qos_limit(9)
• cpu_latency_qos_request_active(9)
• cpu_latency_qos_add_request(9)
• cpu_latency_qos_update_request(9)
• cpu_latency_qos_remove_request(9)
• cpu_wakeup_latency_qos_limit(9)
• freq_constraints_init(9)
• freq_qos_apply(9)
• freq_qos_add_request(9)
• freq_qos_update_request(9)
• freq_qos_remove_request(9)
• freq_qos_add_notifier(9)
• freq_qos_remove_notifier(9)

like, the whole QoS friend group showed up to the party 🫶✨ iykyk

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ngl bestie, everything above is literally all the manpage gives us — no extra lore, no secret defaults, no hidden side quests 🙈 so go read the source if you want the director's cut 💀

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and that's the page!! 🌈 mwah 💋 — brought to you by the <rainbow>Kernel API Manual, section 9 🎀, sourced from ./kernel/power, dated October 2026, and it is obsessed with you understanding it. periodt. 👑💖