trace_ipi_exit(9)

💅 trace_ipi_exit — kernel API manual, bestie edition 🎀

okay so this is a page from the Kernel API Manual (section 9, the kernel-functions one, iykyk) and we're talking about trace_ipi_exit. it's a tiny little function but she's iconic in her own way, let's get into it ✨

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🌸 NAME 🌸

trace_ipi_exit — the function that gets called, like, immediately after the IPI handler returns. literally the second it's done. no cap. 🦋

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✨ SYNOPSIS ✨

void trace_ipi_exit (const char *reason );

that's it. that's the whole vibe. she takes one thing and returns nothing (void, my beloved) 💜

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🎀 ARGUMENTS 🎀

• reason — a string that identifies what the IPI was even for. like, its whole purpose. its little name tag at the party 🏷️

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🔥 DESCRIPTION 🔥

okay so here's the deal, bestie: reason has to be a static string declared with __tracepoint_string. not optional. not "eh it'll probably work". it's giving "requirements, periodt" 💀

and ideally — ideally — it should be the same string you used with trace_ipi_raise for that particular IPI. like, match your outfits, y'know? consistency is main character energy 👑

🫶 real talk: if you skip the __tracepoint_string part, that's not a vibe. do it properly.

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🦋 SEE ALSO 🦋

• Kernel file ./include/trace/events/ipi.h
• trace_ipi_raise(9)
• trace_ipi_entry(9)

go read those next, they're literally the sibling group chat of this function 🌈

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and that's the page!! mwah 💖 this one came from the source/version ./include/trace/events and she's got a date stamp of October 2026 — so go forth and trace those IPIs responsibly, bestie ⭐🌸🎀