try_then_request_governor(9)

💖 NAME 💖

try_then_request_governor — bestie, this is the little helper that goes looking for a governor and, if it can’t find it, asks for the module and tries again. Periodt. 💅

✨ SYNOPSIS ✨

struct devfreq_governor * try_then_request_governor (const char *name );

🎀 ARGUMENTS 🎀

• name — the name of the governor, like the little name tag at the function party 🏷️✨

🦋 DESCRIPTION 🦋

Okay so picture this: try_then_request_governor searches the list of devfreq governors, and if the one you want isn’t there, it requests the module and tries again. Iconic persistence, honestly. 🫶

This whole situation can happen when both drivers — the governor driver and the driver that calls devfreq_add_device — are built as modules. Yes, both of them. Modules. It’s giving “we’re all modular here.” 😭

⚠️ Heads up, bestie: devfreq_list_lock should be held by the caller. Like, actually held. Don’t come in without it. 🔒💀

It returns the matched governor’s pointer, or an error pointer. That’s the vibe check: pointer on success, error pointer when it’s not giving. 🌸

🌈 SEE ALSO 🌈

Kernel file ./drivers/devfreq/devfreq.c, plus the whole friend group:

• find_device_devfreq(9)
• devfreq_get_freq_range(9)
• devfreq_get_freq_level(9)
• devfreq_update_status(9)
• find_devfreq_governor(9)
• devfreq_update_target(9)
• update_devfreq(9)
• devfreq_monitor(9)
• devfreq_monitor_start(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)

And that’s the whole page, bestie. This little gem lives in ./drivers/devfreq, and it’s stamped October 2026 — so yeah, she’s current, she’s cute, she’s try_then_request_governor(9). 💖✨🎀