PROBE::SOFTIRQ.ENTRY(3stap)

💖 PROBE::SOFTIRQ.ENTRY 💖

okay bestie, welcome to the Interrupt Request (IRQ) Tapset section 3stap of the SystemTap Tapset Reference — and this one is literally about the exact moment a pending softirq's handler kicks off. the beginning of the softirq era ✨

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🌸 NAME 🌸

probe::softirq.entry — Execution of handler for a pending softirq starting

like. it's the probe that fires right as the handler for a pending softirq is about to go. no cap. 👑

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🎀 SYNOPSIS 🎀

probe softirq.entry {}

that's it, that's the whole vibe. an empty probe body and you're in. 💅

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✨ VALUES ✨

these are the local variables you get handed at this probe point — collect them all 🦋

• h — struct softirq_action* for current pending softirq. it's giving "here's the struct for the softirq that's pending rn" 😌
• action — pointer to softirq handler just about to execute. literally the function that's about to be the main character 🔥
• vec — softirq_action vector 🌈
• vec_nr — softirq vector number. a whole number, a whole identity ⭐

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👀 SEE ALSO 👀

• tapset::irq(3stap) — go read the sibling, bestie, iykyk 🫶

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okay that's the whole page fr fr 💀 go forth and trace those softirqs, you absolute icon. this has been the SystemTap Tapset Reference, Ver, dated September 2026 — mwah, take care of yourself, drink water, and may your probes always fire 💖✨🎀🦋🌸