ccw_device_sched_todo(9)

💅 ccw_device_sched_todo(9) — like, the manual page, bestie

Okay so this is a Kernel API Manual entry for ccw_device_sched_todo(9) and it's honestly kind of a little scheduling baddie. Let's get into it ✨

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🌸 NAME 🌸

ccw_device_sched_todo — schedule ccw device operation

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🎀 SYNOPSIS 🎀

void ccw_device_sched_todo (struct ccw_device *cdev , enum cdev_todo
todo );

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🦋 ARGUMENTS 🦋

• cdev — the ccw device in question, your main character 🫶
• todo — the todo. yeah. that's the whole description. it's giving minimalism, it's giving mystery, we respect it 💅

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🔥 DESCRIPTION 🔥

So basically: you take the operation that todo identifies and you schedule it to be performed on the slow path workqueue. That's it. That's the vibe check ✨

But wait, there's a lil plot twist 👀 — if another operation with higher priority is already scheduled, this function does nothing. Like, it literally just sits there and lets the more important one cook. Respect the hierarchy, periodt 👑

⚠️ And this is the important part bestie, do NOT skip it: this needs to be called with the ccwdev lock held. No lock, no service. Non-negotiable 🙈

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💜 SEE ALSO 💜

Kernel file ./drivers/s390/cio/device.c — and also these iconic little friends:

• ccw_device_set_offline(9)
• ccw_device_set_online(9)
• get_ccwdev_by_dev_id(9)
• ccw_purge_blacklisted(9)
• io_subchannel_sch_event(9)
• ccw_device_wait_idle(9)
• get_ccwdev_by_busid(9)
• ccw_driver_register(9)
• ccw_driver_unregister(9)
• ccw_device_siosl(9)

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And that's the whole page, no cap 🧚 This lil drop came from ./drivers/s390/cio and is dated October 2026 — so go schedule those operations, hold that lock, and slay 💖🌈⭐