intel_pt_last_psb(9)

📦 version 7.3.1, in nixpkgs unstable

💅 intel_pt_last_psb(9) — like, the Kernel API Manual bestie, section 9

okay so real talk, this page is from the Kernel API Manual and it's called intel_pt_last_psb(9) — yes the 9 is part of the name, it's giving kernel-internals-only, iykyk 🧚

✨ NAME ✨

intel_pt_last_psb — find the last PSB packet in a buffer. that's it. that's the whole gig 💖

🦋 SYNOPSIS 🦋

unsigned char * intel_pt_last_psb (unsigned char *buf , size_t len );

look at her go. one function, two args, returns a pointer. main character energy honestly 👑

🌸 ARGUMENTS 🌸

  • buf — the buffer. the actual bytes we're snooping through 🕵️‍♀️
  • len — size of buffer. how much of it we're allowed to look at, no going past the edge bestie 🚧

🎀 DESCRIPTION 🎀

so basically: this function finds the last PSB in a buffer. that's the description. that's literally the whole thing. lowkey iconic that they didn't over-explain it, periodt 💅

⭐ RETURN ⭐

  • a pointer to the last PSB in buf — if it's found 👑
  • NULL — if it is not found 😭

no cap, that's the full contract. check for NULL, bestie, or you're gonna have a bad time 💀

🌈 SEE ALSO 🌈

the source lives in the kernel file right here, go read it fr fr:

./tools/perf/util/intel-pt-decoder/intel-pt-decoder.c

and the whole friend group shows up too:

squad goals honestly 🫶

ok that's the whole page! tiny page, huge vibes. go find your last PSB and slay ✨

sign-off time 🎀 this little love letter comes to you from source ./tools/perf/util/intel-pt-dec... and it's dated October 2026 — same intel_pt_last_psb(9) energy, forever and always 💜

📦 where this page comes from