clk_restore_context(9)

💖 clk_restore_context(9) — the kernel API manual, but make it make sense 💖

okay bestie, so you know how clk_restore_context(9) has its own whole manpage? yeah. that's the one. we're doing it. grab a strawberry 🍓 and let's go, because this one is short and sweet and honestly kind of iconic for it.

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✨ NAME ✨

clk_restore_context — restore clock context after poweroff 🫶

like, the clocks went to sleep with the rest of the machine, and now somebody's gotta put their little outfits back on. that's this function. no cap.

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🌈 SYNOPSIS 🌈

void clk_restore_context (void );

yeah. that's the whole signature. returns void, takes nothing. a true minimalist queen 👑

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🎀 ARGUMENTS 🎀

• void — no arguments. not "optional arguments", not "arguments with defaults". no arguments. zero. nada. she walks in with an empty bag and that's the vibe 💅

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🦋 DESCRIPTION 🦋

so here's the tea: this occurs with all clocks enabled. all of them. every single one is up and running while this happens, which like — slay, but also good to know.

and the second thing, which is lowkey the important part: it occurs deep within the resume code, so locking is not necessary. no mutexes, no spinlocks, no "wait, did I take that lock already" panic spiral. the resume code has already got you. it's giving "trust the process" energy fr fr ✨

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💜 SEE ALSO 💜

the friend group. the whole group chat. every single one of these is invited and you're gonna read the list:

• Kernel file ./include/linux/clk.h
• clk notifier callback types(9)
• struct clk_notifier(9)
• struct clk_notifier_data(9)
• struct clk_bulk_data(9)
• clk_notifier_register(9)
• clk_notifier_unregister(9)
• devm_clk_notifier_register(9)
• clk_get_accuracy(9)
• clk_set_phase(9)
• clk_get_phase(9)
• clk_set_duty_cycle(9)
• clk_get_scaled_duty_cycle(9)
• clk_is_match(9)
• clk_rate_exclusive_get(9)
• devm_clk_rate_exclusive_get(9)
• clk_rate_exclusive_put(9)
• clk_save_context(9)
• clk_prepare(9)
• clk_unprepare(9)
• clk_is_enabled_when_prepared(9)
• clk_get(9)
• clk_bulk_get(9)
• clk_bulk_get_all(9)
• clk_bulk_get_optional(9)
• devm_clk_bulk_get(9)
• devm_clk_bulk_get_optional(9)
• devm_clk_bulk_get_enable(9)
• devm_clk_bulk_get_optional_enable(9)
• devm_clk_bulk_get_all(9)
• devm_clk_bulk_get_all_enabled(9)
• devm_clk_get(9)
• devm_clk_get_prepared(9)
• devm_clk_get_enabled(9)
• devm_clk_get_optional(9)
• devm_clk_get_optional_prepared(9)
• devm_clk_get_optional_enabled(9)
• devm_clk_get_optional_enabled_with_rate(9)
• devm_get_clk_from_child(9)
• clk_enable(9)
• clk_bulk_enable(9)
• clk_disable(9)
• clk_bulk_disable(9)
• clk_get_rate(9)
• clk_put(9)
• clk_bulk_put(9)
• clk_bulk_put_all(9)
• devm_clk_put(9)
• clk_round_rate(9)
• clk_set_rate(9)
• clk_set_rate_exclusive(9)
• clk_has_parent(9)
• clk_set_rate_range(9)
• clk_set_min_rate(9)
• clk_set_max_rate(9)
• clk_set_parent(9)
• clk_get_parent(9)
• clk_get_sys(9)
• clk_drop_range(9)
• clk_get_optional(9)

like I said. the whole group chat. read it, know it, live it 📚💅

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💀 friendly reminder bestie: clk_save_context(9) is right there in that list for a reason — this one restores, that one saves. they're a matched set. don't mix them up, i'm begging 🙈

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and that's the whole page!! short king behavior honestly 👑 this one lives in ./include/linux, it's dated October 2026, and the header/footer both just say clk_restore_context(9) at you twice because the manpage format is dramatic like that. mwah 💋 bye bestie, go restore some context 🧚✨