rb_validate_buffer(9)

📦 version 7.3.1, in nixpkgs unstable

💅 rb_validate_buffer(9) 💅

okay bestie, welcome to the Kernel API Manual ✨ this one's a lil kernel-side baddie that lives in the ring buffer world and honestly? she's just here to do a vibe check on your pages 🫶

🌸 NAME 🌸

rb_validate_buffer — she validates a single buffer page and updates the state. that's it, that's the job, and she does it flawlessly 💅

✨ SYNOPSIS ✨

void rb_validate_buffer (struct buffer_page *bpage , struct
ring_buffer_per_cpu *cpu_buffer , struct ring_buffer_cpu_meta *meta ,
struct rb_validation_state *state , u64 prev_ts , u64 next_ts );

five arguments, zero drama. slay 💖

🎀 ARGUMENTS 🎀

  • bpage — the buffer page she's validating. the main character of this whole function ngl 👑
  • cpu_buffer — the cpu_buffer this page belongs to. gotta know whose page it is, iykyk
  • meta — the meta of the cpu_buffer. the lore, if you will 📖
  • state — the validation state. this is what gets updated when everything's cute ✨
  • prev_ts — the previous buffer's timestamp (optional). no pressure if you don't have one 🫶
  • next_ts — the next buffer's timestamp (optional). also optional, also no pressure 🌸

💜 DESCRIPTION 💜

so here's the tea ☕ — if the page is invalid (wrong event length or timestamp), she does not let it slide. nope. she increments the discarded counter and warns about it. loud and proud, as she should 💀

otherwise? she just updates the validation state. clean, simple, iconic. periodt ✨

ngl bestie, "invalid" here means wrong event length or timestamp — that's the whole vibe check. don't come for her with a bad timestamp and expect silence 🙈

🦋 SEE ALSO 🦋

the whole friend group fr fr — go check these out, they're all in the Kernel file ./kernel/trace/ring_buffer.c:

and that's the whole page, bestie 🧚 no gatekeeping 💖 this one drops from ./kernel/trace, dated October 2026, and she's filed under rb_validate_buffer(9) — go off, kernel queen 👑✨💅
📦 where this page comes from