ftrace_need_init_nop(9)

💖 ftrace_need_init_nop(9) 💖

okay so bestie, welcome to the Kernel API Manual — yes, that's the manual we're in, it's giving "official documentation but make it cute" ✨

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🌸 NAME 🌸

ftrace_need_init_nop — returns whether nop call sites should be initialized 🎀

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🦋 SYNOPSIS 🦋

ftrace_need_init_nop

that's it, that's the whole synopsis, no arguments, we love a no-arg icon 💅

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✨ DESCRIPTION ✨

okay so here's the lore, bestie 🌈 normally the compiler's -mnop-mcount flag generates suitable nops all by itself, so we literally don't need to call ftrace_init_nop if the code is built with that flag. easy, right? 🙈

but — and this is the main character energy — architectures where that's not always the case may define their own condition. so this whole function exists to let them speak their truth 💜

the return value must be:

• 0 — if ftrace_init_nop should be called
• Nonzero — if ftrace_init_nop should not be called

no in-between, no "it depends", it's 0 or not-0, periodt 🔥

fr fr, keep that straight — zero means do the thing, nonzero means don't. getting it backwards is not the vibe 😭

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👑 SEE ALSO 👑

kernel file ./include/linux/ftrace.h, plus the whole squad 🫶

• stack_tracer_disable(9)
• stack_tracer_enable(9)
• ftrace_get_symaddr(9)
• ftrace_make_nop(9)
• ftrace_init_nop(9)
• ftrace_make_call(9)
• ftrace_modify_call(9)

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alright bestie, that's the whole page, you ate that 🍓 and just so we're official: this came from the source at ./include/linux, dated October 2026, in the Kernel API Manual — love that for us, mwah 💖💅🧚