clocksource_select(9)

🌸 NAME 🌸

Okay bestie, welcome to clocksource_select(9) from the Kernel API Manual — the function that does a whole clocksource vibe check and picks the best one. ✨

🦋 SYNOPSIS 🦋

void clocksource_select (void );

💅 ARGUMENTS 💅

• void — no arguments. None. Zero. She takes literally nothing, and honestly? Iconic. 🫶

🎀 DESCRIPTION 🎀

⚠️ Private function alert: you must hold clocksource_mutex when you call her. This is not optional, bestie — lock it up first. 🔐

So what does she do? She selects the clocksource with the best rating, or the clocksource that is selected by userspace override. Like, she’s either going with the best-rated one or respecting the override userspace picked. Periodt. 💖

🌈 SEE ALSO 🌈

Kernel file: ./kernel/time/clocksource.c — and the whole friend group is right here:

• clocks_calc_mult_shift(9)
• clocksource_mark_unstable(9)
• clocksource_suspend_select(9)
• clocksource_start_suspend_timing(9)
• clocksource_stop_suspend_timing(9)
• clocksource_suspend(9)
• clocksource_resume(9)
• clocksource_touch_watchdog(9)
• clocksource_max_adjustment(9)
• clocks_calc_max_nsecs(9)
• clocksource_update_max_deferment(9)
• __clocksource_update_freq_scale(9)
• __clocksource_register_scale(9)
• clocksource_unregister(9)
• current_clocksource_show(9)
• current_clocksource_store(9)
• unbind_clocksource_store(9)
• available_clocksource_show(9)
• boot_override_clocksource(9)
• boot_override_clock(9)

Source/version corner: ./kernel/time 🌸 date energy: October 2026 🎀 that’s the footer, bestie — mwah! 💋