simple_ring_buffer_init(9)

💅 simple_ring_buffer_init(9) 💅

okay so this is from the Kernel API Manual, bestie, and it's literally about spinning up a per-CPU ring buffer from a descriptor. buckle up, it's a short one but it's important 🎀

✨ NAME ✨

simple_ring_buffer_init — Init @cpu_buffer based on @desc 🦋

🌸 SYNOPSIS 🌸

int simple_ring_buffer_init (struct simple_rb_per_cpu *cpu_buffer ,
struct simple_buffer_page *bpages , const struct ring_buffer_desc *desc
);

💖 ARGUMENTS 💖

• cpu_buffer — a simple_rb_per_cpu buffer that you're gonna init. and like, you allocated it, not us. caller's job, no cap 🫶
• bpages — an array of simple_buffer_pages, and it needs to have exactly as many elements as desc->nr_page_va. not one less, not one more, okay?? count them 💀
• desc — a ring_buffer_desc. that's the blueprint, the whole vibe, the main character ✨

👑 DESCRIPTION 👑

Returns 0 on success, or -EINVAL if the content of desc is invalid. that's it, that's the whole thing. short and iconic 💅

lowkey the vibe check here is entirely on desc — if it's cooked, you get -EINVAL. no other outcome, periodt 🔥

🌈 SEE ALSO 🌈

• Kernel file ./kernel/trace/simple_ring_buffer.c
• simple_ring_buffer_swap_reader_page(9)
• simple_ring_buffer_reserve(9)
• simple_ring_buffer_commit(9)
• simple_ring_buffer_reset(9)
• simple_ring_buffer_unload(9)
• simple_ring_buffer_enable_tracing(9)

go read all of those too, they're all in their flop era without each other fr fr 🧚‍♀️

and that's the page, bestie!! 🍓 this one came out of ./kernel/trace, dated October 2026 — so go forth and init your buffers responsibly, mwah 💜⭐