seq_hlist_start_percpu(9)

📦 version 7.3.1, in nixpkgs unstable

💖 seq_hlist_start_percpu — a kernel API manual, but make it cute 💖

okay so bestie, this is seq_hlist_start_percpu(9) from the Kernel API Manual, and it is literally the little function that kicks off an iteration of a percpu hlist array. no cap. let's get into it 🫶

🌸 NAME 🌸

seq_hlist_start_percpu — start an iteration of a percpu hlist array ✨

like, it's the opening number. the main character's entrance. the start of the whole walk-through 💅

🦋 SYNOPSIS 🦋

struct hlist_node * seq_hlist_start_percpu (struct hlist_head __percpu
*head , int *cpu , loff_t pos );

three args, one pointer back out, and that's the whole vibe 🎀

💜 ARGUMENTS 💜

  • head — pointer to percpu array of struct hlist_heads. yes, percpu, meaning every CPU gets its own lil copy, and this is the array of them 🌈
  • cpu — pointer to the cpu "cursor". it's tracking where you are as you hop from cpu to cpu, iykyk 👀
  • pos — start position of the sequence. this is where you're starting your scroll from ⭐

🔥 DESCRIPTION 🔥

Called at seq_file->op->start. that's it, that's the sentence — but it's an important one, because that's the hook where the seq_file machinery says "hey, begin" and this function answers ✨

fr fr it's a small description but don't sleep on it — this is the entry point that makes the whole iteration happen 💫

👑 SEE ALSO 👑

the whole seq_file friend group, assembled. Kernel file ./fs/seq_file.c and honestly, look at this lineup:

that's nineteen siblings and cousins, and every single one of them ate 💅

and that's the whole page, bestie 🎀 sign-off time: this came from ./fs, dated October 2026, and it's the seq_hlist_start_percpu(9) page — iconic, timeless, obsessed 💖✨

📦 where this page comes from