eadm_subchannel_sch_event(9)

💅 eadm_subchannel_sch_event — the Kernel API Manual tea, bestie 🫶

okay so this page lives in the Kernel API Manual (that's the manual name, clocked it ✨) and it's all about one little function that handles subchannel events. let me put you on. 🦋

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🌸 NAME 🌸

eadm_subchannel_sch_event — literally processes a subchannel event. that's it, that's the whole vibe. 🎀

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✨ SYNOPSIS ✨

int eadm_subchannel_sch_event (struct subchannel *sch , int process );

that's the whole signature, no cap — don't go changing any of it. 👑

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💖 ARGUMENTS 💖

• sch — the subchannel. like, the actual subchannel struct. that's the whole description, she's short but she's iconic. 💅
• process — non-zero if the function is called in process context. so if it's zero, you're not in process context, and that matters, iykyk. 🫶

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🔥 DESCRIPTION 🔥

so an unspecified event occurred for this subchannel. yep, unspecified — the page isn't gonna tell you which one, that's above our pay grade. 🙈 what you do is adjust the data according to the current operational state of the subchannel. like, current state, current you, adjust accordingly. that's the assignment. 💜

return zero when the event has been handled sufficiently. 🎀

return -EAGAIN when this function should be called again in process context. not me having to come back for round two, but okay. 🔁

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🦋 SEE ALSO 🦋

Kernel file ./drivers/s390/cio/eadm_sch.c — go read her, she's the main character energy behind all of this. 🌈

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lowkey reminder bestie: sch is the subchannel, process is the non-zero-if-in-process-context flag, zero means handled sufficiently, -EAGAIN means call me again in process context. fr fr, that's the whole tea. 🍓

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and that's a wrap on <pink>September</pink>... jk, it's October 2026 🎀, coming to you straight from ./drivers/s390/cio in the Kernel API Manual — slay, ate, periodt. 💅✨🧚