intel_pt_compare_buffers(9)

✨ NAME ✨

okay bestie, welcome to the intel_pt_compare_buffers(9) page from the Kernel API Manual — it's literally about comparing bytes in a buffer to a circular buffer, and yes, it ate 💅

🌸 SYNOPSIS 🌸

bool intel_pt_compare_buffers (void *buf1 , size_t compare_size , void *buf2 , size_t offs2 , size_t buf2_size );

🎀 ARGUMENTS 🎀

• buf1 — the first buffer, bestie. first one. the OG.
• compare_size — how many bytes we're comparing. the amount. the count. periodt.
• buf2 — the second buffer, and plot twist: it's a circular buffer 🌀
• offs2 — the offset in the second buffer. where we start vibing inside buf2.
• buf2_size — the size of the second buffer. its whole capacity, no cap.

🦋 DESCRIPTION 🦋

so the comparison allows for the possibility that the bytes to compare in the circular buffer are not contiguous 😭 like they might be split across the wrap-around situation, and this function is built for that.

it is assumed that compare_size <= buf2_size — that's the vibe check the function is assuming, so pls respect it 🫶

this function returns false if the bytes are identical, and true otherwise. yes, that's the whole assignment. identical = false, not identical = true. iconic behavior honestly 💖

⭐ SEE ALSO ⭐

• Kernel file ./tools/perf/arch/x86/util/intel-pt.c — go read it, iykyk 🔥

signing off from ./tools/perf/arch/x86/util, dated October 2026 — mwah 💋✨