adj_for_padding(9)

💅 adj_for_padding(9) — a Kernel API Manual moment

okay so this is adj_for_padding, from the Kernel API Manual, and bestie it's a tiny little function that does one specific thing and does it flawlessly. periodt.

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✨ NAME ✨

adj_for_padding — adjust overlap to account for padding. that's it, that's the whole vibe 🎀

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🌸 SYNOPSIS 🌸

unsigned char * adj_for_padding (unsigned char *buf_b , unsigned char
*buf_a , size_t len_a );

like, she's a function, she takes three things, she gives you back a pointer. iconic behavior honestly 🦋

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💖 ARGUMENTS 💖

• buf_b — the second buffer. yes, b comes second. no, we don't make the rules, we just slay by them 💅
• buf_a — the first buffer. she's the main character here, lowkey 👑
• len_a — the size of the first buffer. know her measurements fr fr 🍓

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🧚 DESCRIPTION 🧚

so here's the tea: buf_a might have up to 7 bytes of padding appended to it. yep, up to 7. not 8, not 6 — up to 7. and when that happens, the overlap needs adjusting accordingly, and that is literally this function's whole job. she adjusts the overlap. she accounts for the padding. no cap ✨

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🔥 RETURN 🔥

a pointer into buf_b — specifically, from where the non-overlapped data starts. that's the address, that's the answer, that's the whole point 🫶

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🌈 SEE ALSO 🌈

• the Kernel file ./tools/perf/util/intel-pt-decoder/intel-pt-decoder.c — go read the source bestie, it's giving lore 💜
• intel_pt_next_psb(9)
• intel_pt_step_psb(9)
• intel_pt_last_psb(9)
• intel_pt_next_tsc(9)
• intel_pt_tsc_cmp(9)
• intel_pt_find_overlap_tsc(9)
• intel_pt_find_overlap(9)
• struct fast_forward_data(9)
• intel_pt_ff_cb(9)
• intel_pt_fast_forward(9)

like, that's a whole friend group right there and they're all connected. iykyk 🌸

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ngl if you got here looking for something dramatic, this page is not that. it's a small utility doing honest work in the intel-pt decoder and honestly? we love her for it. 💀

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alright bestie that's the whole page!! 💖 this cutie came from ./tools/perf/util/intel-pt-dec... (that's the source/version, slightly truncated by the man page gods) and she's dated October 2026 — catch you in the next release, mwah 🎀🦋✨