posix_clock_register(9)

okay so, bestie, welcome to posix_clock_register(9) from the Kernel API Manual — the page for registering a new clock, and the way it's giving clock-driver main character energy is honestly iconic. 🕰️✨

💖 NAME 💖

posix_clock_register — register a new clock. That's the whole vibe: one function, one job, clock gets registered. periodt. 🕰️

✨ SYNOPSIS ✨

Here's the signature, copied exactly, no edits bestie:

       int posix_clock_register (struct posix_clock *clk , struct device *dev
       );

🎀 ARGUMENTS 🎀

• clk — pointer to the clock. The caller must provide the 'ops' field — that part is required, bestie. No ops, no clock registration energy, fr fr.
• dev — pointer to the initialized device. The original text is literally “Caller must provide” and then just stops 😭 — so that's all the detail on the page; I'm not making up the rest, periodt.

🦋 DESCRIPTION 🦋

A clock driver calls this function to register itself with the clock device subsystem. That's the whole point — clock driver says hi to the clock device subsystem, and this function is the intro. 👑

If clk points to dynamically allocated memory, then the caller must provide a 'release' function to free that memory. That's the memory-cleanup requirement, not a vibe suggestion. 🧚

Returns zero on success, non-zero otherwise. Slay on zero, check the non-zero. ✅

🌈 SEE ALSO 🌈

Go peek at these if you want the full lore:

• Kernel file ./include/linux/posix-clock.h
• struct posix_clock_operations(9)
• struct posix_clock(9)
• struct posix_clock_context(9)
• posix_clock_unregister(9)

source: ./include/linux · date: October 2026 · page: posix_clock_register(9) — mwah, go register that clock responsibly 💜🦋