PROBE::IOSCHEDULER.ELV_ADD_REQUEST.KP(3stap)

✨ NAME ✨

okay so probe::ioscheduler.elv_add_request.kp — it's a kprobe based probe (iykyk) that literally just tells you a request got added to the request queue. that's it. that's the whole vibe. it's in section 3stap of the manual, bestie 💖

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🌸 SYNOPSIS 🌸

probe ioscheduler.elv_add_request.kp {}

no arguments, no fancy setup, she just exists and reports things. iconic behavior honestly 💅

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🦋 VALUES 🦋

every value this probe hands you, no cap, in order:

• elevator_name — the type of I/O elevator that's currently enabled. yeah, the elevator. in your kernel. she's got range 🛗✨
• disk_minor — the disk minor number of the request 🎀
• rq_flags — the request flags, aka the little metadata receipts of the request 🧾
• name — the name of the probe point. yes, she knows her own name, main character energy fr 👑
• q — a pointer to the request queue 🫶
• rq — the address of the request 📍
• disk_major — the disk major number of the request 💜

lowkey these are just the values you can grab inside your probe body — nothing spooky, just data. no cap.

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🌈 SEE ALSO 🌈

• tapset::ioscheduler(3stap) — go read the whole ioscheduler tapset family, they're all slaying together ✨

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okay and that's the page!! this was the SystemTap Tapset Reference, Ver (yes the version field is just vibing there empty, we don't question her), dated September 2026 🗓️💖 stay curious, stay probing, and remember: every request deserves to be seen. bye bestie 🦋💅🎀