devfreq_monitor_start(9)

💅 devfreq_monitor_start — the kernel API manual, bestie edition ✨

okay so real talk, this one's from the Kernel API Manual (section 9, for the uninitiated — that's the kernel-functions girlypop section 💖) and no cap, she's a tiny function with a big job.

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🌸 NAME 🌸

devfreq_monitor_start — start the load monitoring on a devfreq instance. that's it, that's the whole vibe. she starts the monitoring, periodt ✨

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🎀 SYNOPSIS 🎀

void devfreq_monitor_start (struct devfreq *devfreq );

yes bestie, that's the whole signature — returns void, takes exactly one (1) pointer, and she's out. iconic, honestly. 💅

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🦋 ARGUMENTS 🦋

• devfreq — the devfreq instance in question. like, the actual device-freq thing you're working with. that's the one. 🫶

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✨ DESCRIPTION ✨

so here's the tea ☕ — this is a helper function for starting up devfreq device load monitoring. she's the little elbow-nudge that gets the monitoring going.

by default, a deferrable timer is what gets used for the load monitoring. (deferrable timer = the chill timer that doesn't mind being a little late 🧚) but hiii, you're not locked in — users can change this behavior using the "timer" type in devfreq_dev_profile. your profile, your rules, iykyk. ⭐

and who calls her? NOT you, bestie, the devfreq governor does. 💀 she gets called by the devfreq governor in response to the DEVFREQ_GOV_START event, which is the event generated while adding a device to the devfreq framework. so like… she's not the main character, she's the main character's very competent bestie showing up exactly when the event fires. 🌈

ngl this one's genuinely low-stakes: no return value, no error codes, she just does the thing. slay. ✨

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👑 SEE ALSO 👑

okay this list is LONG but we're not skipping a single one, because every single one of these is part of the family 💜 and also, the kernel file lives at ./drivers/devfreq/devfreq.c — that's the address, go say hi 🏠

• find_device_devfreq(9)
• devfreq_get_freq_range(9)
• devfreq_get_freq_level(9)
• devfreq_update_status(9)
• find_devfreq_governor(9)
• try_then_request_governor(9)
• devfreq_update_target(9)
• update_devfreq(9)
• devfreq_monitor(9)
• devfreq_monitor_stop(9)
• devfreq_monitor_suspend(9)
• devfreq_monitor_resume(9)
• devfreq_update_interval(9)
• devfreq_notifier_call(9)
• qos_notifier_call(9)
• qos_min_notifier_call(9)
• qos_max_notifier_call(9)
• devfreq_dev_release(9)
• devfreq_add_device(9)
• devfreq_remove_device(9)
• devm_devfreq_add_device(9)
• devm_devfreq_remove_device(9)
• devfreq_suspend_device(9)
• devfreq_resume_device(9)
• devfreq_suspend(9)
• devfreq_resume(9)
• devfreq_add_governor(9)
• devm_devfreq_add_governor(9)
• devfreq_remove_governor(9)
• devfreq_summary_show(9)
• devfreq_recommended_opp(9)
• devfreq_register_opp_notifier(9)
• devfreq_unregister_opp_notifier(9)
• devm_devfreq_register_opp_notifier(9)
• devm_devfreq_unregister_opp_notifier(9)
• devfreq_register_notifier(9)
• devm_devfreq_register_notifier(9)
• devm_devfreq_unregister_notifier(9)

like… that's the whole group chat right there. go read them all, you'll be so smart 🍓

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and that's the page!! 💖 this little love letter lives in ./drivers/devfreq and it's dated October 2026 — so mark your calendar, bestie 🎀✨ see you in the kernel, mwah 🫶💅