ap_apft_available(9)

💅 ap_apft_available — bestie's guide to the APFT vibe check

okay so real talk, this is from the Kernel API Manual, section 9 (that's the kernel-API section, iykyk), and it's genuinely tiny. Like, blink-and-you-miss-it tiny. But we're gonna give it the main character energy it deserves anyway. 🎀

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✨ NAME ✨

ap_apft_available — the little function that tells you whether the AP facilities test (APFT) facility is, like... available. That's it. That's the whole job. 🦋

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🌸 SYNOPSIS 🌸

int ap_apft_available (void );

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💖 ARGUMENTS 💖

• void — literally no arguments. nothing. nada. she takes nothing and she gives you an int. iconic behavior, honestly. 💅

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🔥 DESCRIPTION 🔥

Returns 1 if APFT is available.

yep. that's the entire description. no paragraph two, no caveats, no lore. she returns 1 when APFT is available, and that's the whole plot. not me being obsessed with how efficient this is 😭✨

ngl it does not say what happens when APFT is not available — the page only promises the 1 case. so don't go inventing a 0 story in your head, bestie. only report what's on the page. 🫶

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👑 SEE ALSO 👑

so the page points you at the Kernel file ./drivers/s390/crypto/ap_bus.c, and then drops an absolute receipt list of related manpages. like she said "here's the whole group chat, go read". 💀

• ap_airq_ptr(9)
• ap_interrupts_available(9)
• ap_qci_available(9)
• ap_init_qci_info(9)
• ap_request_timeout(9)
• ap_poll_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)

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and that's the whole page, bestie — tiny but flawless. 💜

shoutout to the source/version corner: this one lives under ./drivers/s390/crypto and it's dated October 2026. go off, s390 crypto directory. 🌈⭐🍓