PROBE::IRQ_HANDLER.ENTRY(3stap)

✨ PROBE::IRQ_HANDLER.ENTRY ✨

okay bestie, gather round 💖 you're in the Interrupt Request (IRQ) Tapset, and this page lives in section 3stap of your friendly neighbourhood SystemTap Tapset Reference. it's giving "interrupts are literally knocking on the door and we're answering" energy 🚪🔔

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🌸 NAME 🌸

probe::irq_handler.entry — the moment an interrupt handler starts doing its thing. execution of interrupt handler starting, periodt 💅

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🎀 SYNOPSIS 🎀

probe irq_handler.entry {}

that's it. that's the whole vibe. no args, no drama, just a probe sitting pretty at the entry point 🦋

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👑 VALUES 👑

these are the local variables you get to peek at while you're chilling inside the probe. every single one, no skips 🫶

• thread_flags — flags related to thread 🧵
• dir — a pointer to the proc/irq/NN/name entry 📁
• handler — the interrupt handler function, the main character of this whole situation ⭐
• action — struct irqaction* for this interrupt num, iykyk 🎬
• next_irqaction — pointer to next irqaction for shared interrupts, because sometimes they share the aux cord 🔗
• flags_str — symbolic string representation of IRQ flags, the glow-up version of the raw flags ✨
• dev_name — name of device 🖥️
• irq — irq number, the digits, the ID, the whole identity 🔢
• thread_fn — interrupt handler function for threaded interrupts 🧵🔥
• thread — thread pointer for threaded interrupts 🪡
• flags — flags for IRQ handler 🚩
• dev_id — cookie to identify device 🍪 (yes, literally a cookie, we love a snack-based identifier)

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🦋 SEE ALSO 🦋

• tapset::irq(3stap) — go read the sibling page, bestie, it's family 💜

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okay that's the whole page and honestly? ate. 💅 no cap, every value accounted for, every flag intact, nothing dropped on the floor.

reminder that this is the SystemTap Tapset Reference, Ver (yep, that's the version string as printed, we don't question it 🙈), dated September 2026 — so mark your calendars, put it in the group chat, and go trace some interrupts. bye bestie, mwah 😭💖🎀