freq_qos_update_request(9)

💅 freq_qos_update_request(9)

welcome to the Kernel API Manual page for freq_qos_update_request(9) — yes bestie, we're in the kernel docs and this one is about modifying an existing frequency QoS request. iconic behavior only. ✨

✨ NAME ✨

freq_qos_update_request — modify existing frequency QoS request.

🌸 SYNOPSIS 🌸

here's the signature, exactly:

int freq_qos_update_request (struct freq_qos_request *req , s32
       new_value );

🎀 ARGUMENTS 🎀

okay so the two args are giving very main-character energy:

• req — request to modify.
• new_value — new request value.

💖 DESCRIPTION 💖

so freq_qos_update_request updates an existing frequency QoS request, along with the effective constraint value for the list of requests it belongs to. that's the whole plot. 🫶

return tea: it returns 1 if the effective constraint value has changed, 0 if the effective constraint value has not changed, or a negative error code on failures. no cap, those are the three outcomes. 💅

🦋 SEE ALSO 🦋

Kernel file ./kernel/power/qos.c is the one. the full reference squad is:

• 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_read_value(9)
• freq_qos_apply(9)
• freq_qos_add_request(9)
• freq_qos_remove_request(9)
• freq_qos_add_notifier(9)
• freq_qos_remove_notifier(9)

okay that's the page, bestie 🫶 — source/version is ./kernel/power, dated October 2026, and yes it's the freq_qos_update_request(9) manual. slay and bye 💅