ring_buffer_oldest_event_ts(9)

📦 version 7.3.1, in nixpkgs unstable

🦋 ring_buffer_oldest_event_ts(9) 🦋

okay so bestie, we're in the Kernel API Manual today and this page is literally about grabbing the oldest event timestamp out of a ring buffer. that's the whole vibe. iconic lil timestamp snatcher 💅

✨ NAME ✨

ring_buffer_oldest_event_ts — get the oldest event timestamp from the buffer 🫶

🌸 SYNOPSIS 🌸

u64 ring_buffer_oldest_event_ts (struct trace_buffer *buffer , int cpu );

like, she takes a struct trace_buffer * and an int, and she gives you back a u64. no cap, that's the whole signature 💖

🎀 ARGUMENTS 🎀

  • buffer — the ring buffer in question, the main character of this whole situation 🌈
  • cpu — the per CPU buffer to read from. yes, per CPU, so pick your fave 💅

⭐ SEE ALSO ⭐

the kernel file lives at ./kernel/trace/ring_buffer.c and honestly the whole friend group shows up here. look at all these legends 😭💜

and that's the whole page bestie, go get that oldest timestamp 👑

so this one's coming at you from ./kernel/trace, dated October 2026, and it's still called ring_buffer_oldest_event_ts(9) — mwah, bye 💋✨

📦 where this page comes from