ftrace_text_reserved(9)

📦 version 7.3.1, in nixpkgs unstable

💅 ftrace_text_reserved — like, the manual page bestie

okay so this is ftrace_text_reserved from the Kernel API Manual, section 9 — yes we're in the kernel docs, we're fancy now 💅

✨ NAME ✨

ftrace_text_reserved — returns true if a range contains an ftrace location. that's it, that's the whole vibe check 🦋

🎀 SYNOPSIS 🎀

int ftrace_text_reserved (const void *start , const void *end );

like, give it two pointers and it'll tell you what's up ✨

🌸 ARGUMENTS 🌸

  • start — where your range starts, bestie. the beginning of the range you wanna search 🫶
  • end — where your range ends. and inclusive, okay?? end points to the last byte to check, so don't be out here thinking it's exclusive, it is NOT 🙈

⭐ RETURN ⭐

returns 1 if start and end contain an ftrace location 🔥

and what counts as an ftrace location? literally just the instruction that's either a NOP or a call to the function tracer. that's the whole criteria, no cap 💀

it checks the ftrace internal tables to figure out if the address belongs or not — so it's doing the detective work for you, iconic 👑

💖 SEE ALSO 💖

kernel file ./kernel/trace/ftrace.c (iykyk) plus this absolutely unhinged list of friends — she knows everyone fr fr:

no pressure but that list is long and every single one of them is a real function, so like... respect the roster 🧚

okay that's the whole page!! thank you for coming to my ted talk 💜

— from ./kernel/trace, dated October 2026, that's a wrap bestie, slay 🌈✨🎀

📦 where this page comes from