csd_lock_is_stuck(9)

💅 csd_lock_is_stuck(9) — like, the Kernel API Manual bestie ✨

okay so this is csd_lock_is_stuck, and it lives in the Kernel API Manual (section 9, kernel-space girlies only 🫶). The whole question it answers is genuinely so simple: has a CSD-lock acquisition been stuck too long? that's it, that's the vibe check 💀

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🌸 NAME 🌸

csd_lock_is_stuck — Has a CSD-lock acquisition been stuck too long?

no cap, that's literally the entire personality of this function 🎀

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✨ SYNOPSIS ✨

bool csd_lock_is_stuck (void );

returns a bool, takes nothing, eats no arguments, minding its own business 👑

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🦋 ARGUMENTS 🦋

• void — no arguments. none. zero. the void is voiding 🙈 she takes nothing and she gives you a bool, main character energy fr fr

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💖 RETURN 💖

• true — returned when a CSD-lock acquisition is stuck and has been stuck long enough for a "non-responsive CSD lock" message to be printed. so it's not just "kinda stuck", it's "stuck stuck", official-message-printed stuck 😭🔥

(iykyk — the return is bool, so if it's not true, it's false, and that's the whole story bestie 💅)

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🌈 SEE ALSO 🌈

• Kernel file ./kernel/smp.c — the source file herself, go read it, she's iconic 👑
• generic_smp_call_function_single_interrupt(9)
• __flush_smp_call_function_queue(9)
• flush_smp_call_function_queue(9)
• smp_call_function_single(9)
• smp_call_function_single_async(9)
• smp_call_function_any(9)
• smp_call_function_many(9)
• smp_call_function(9)
• on_each_cpu_cond_mask(9)
• kick_all_cpus_sync(9)
• wake_up_all_idle_cpus(9)
• cpus_peek_for_pending_ipi(9)
• struct smp_call_on_cpu_struct(9)
• smp_call_on_cpu(9)

like, the whole smp call-function friend group showed up to the group chat 🧚‍♀️✨ every single one of them, no gatekeeping, we love a supportive squad 🫶

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ngl bestie, this page is short and sweet — the only thing it tells you is what true means. don't go inventing extra behaviour for it, she said what she said 💀

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and that's the whole page!! commissioned from ./kernel, dated October 2026, and signed off as csd_lock_is_stuck(9) — periodt. slay, bye 💜⭐🍓