ap_poll_timeout(9)

💅 ap_poll_timeout(9) — the kernel API manual bestie

okay so this is ap_poll_timeout, straight out of the Kernel API Manual, and honestly? it's a little legend. sit down, hydrate, and let's get into it 🫶

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✨ NAME ✨

ap_poll_timeout — AP receive polling for finished AP requests. that's the whole vibe: it's the thing that goes and checks on your AP requests after they've wrapped up. lowkey iconic 💅

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🌸 SYNOPSIS 🌸

enum hrtimer_restart ap_poll_timeout (struct hrtimer *unused );

look at her. one argument, one return type, zero drama ✨

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🎀 ARGUMENTS 🎀

• unused — literally just an unused pointer. that's it. that's the whole argument. bestie is not beating the "unused" allegations 🙈 it's there, you pass it, and it does absolutely nothing. no cap.

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🦋 DESCRIPTION 🦋

so what does she actually do? she schedules the AP tasklet using a high resolution timer. that's the tea ☕ high resolution timer → tasklet gets scheduled. slay, honestly 👑

it's giving "I'm the timer callback that keeps the AP party moving" and we love that for her 💖

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🔥 SEE ALSO 🔥

if you wanna go deeper (and you know you do), these are all in the same orbit — go read them, fr fr:

• Kernel file ./drivers/s390/crypto/ap_bus.c
• ap_airq_ptr(9)
• ap_interrupts_available(9)
• ap_qci_available(9)
• ap_apft_available(9)
• ap_init_qci_info(9)
• ap_request_timeout(9)
• ap_interrupt_handler(9)
• ap_tasklet_fn(9)
• ap_poll_thread(9)
• ap_bus_match(9)
• ap_uevent(9)
• ap_owned_by_def_drv(9)
• ap_apqn_in_matrix_owned_by_def_drv(9)
• ap_select_domain(9)
• ap_get_configuration(9)
• ap_scan_bus(9)
• ap_module_init(9)

like a whole friend group of kernel functions. the (9) is their matching friendship bracelets, I don't make the rules 🎀

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ngl, if you're poking around in the s390 crypto AP subsystem, this is your girl. read the neighbors too, iykyk 💜

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and that's a wrap, bestie! this page lives in ./drivers/s390/crypto, dated October 2026 — so yeah, she's fresh 💅 go forth and poll responsibly, mwah 😭💖🌟