debug_prev_entry(9)

📦 version 7.3.1, in nixpkgs unstable

✨ debug_prev_entry(9) ✨

So this page lives in the Kernel API Manual, and bestie, it's a tiny little function that's about to make your whole day. It's giving "small but mighty" energy. 🎀

💫 NAME

debug_prev_entry — okay so it literally just goes to the previous entry. That's the whole vibe check. 👑

🌸 SYNOPSIS

bool debug_prev_entry (file_private_info_t *p_info );

Copy that exactly, bestie — bool return, one pointer argument, semicolon and all. No cap. 💅

🦋 ARGUMENTS

  • p_info — the private info that gets manipulated. That's it. That's the whole argument list. She's lowkey simple like that. 🫶

💖 DESCRIPTION

Okay so what she does: she sets the current position in p_info to the previous entry. That's the main character move. ⭐

But — and this is the part you gotta pay attention to — if there's no previous entry, the current position is set left as DEBUG_PROLOG_ENTRY, and the return value tells you that no previous entries exist. So like, she doesn't just silently fail on you, she's honest about it. 🙈

Fr fr, keep an eye on that return value — it's the only way you'll know you hit the wall at the start. 💀

🔥 RETURN

  • True if there are more previous entries 🎀
  • false otherwise 🌈

Literally true/false, binary, iconic, no in-between. 💜

👑 SEE ALSO

Y'all, the whole friend group is here, and they all live in the kernel file ./arch/s390/kernel/debug.c:

Go say hi to debug_next_entry(9) — she's basically this one's mirror twin. 🪞✨

Mwah 💋 — this page came from ./arch/s390/kernel and it's dated October 2026, so go forth and navigate those entries, bestie. You ate. 🍓🧚

📦 where this page comes from