pt_update_head(9)

🌸 NAME 🌸

okay so, bestie, welcome to pt_update_head(9) — yes, that’s the page name, and this whole thing lives in the Kernel API Manual. The job is literally: calculate current offsets and sizes. periodt 💅

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✨ SYNOPSIS ✨

the whole vibe check is right here:

void pt_update_head (struct pt *pt );

no cap, that’s the signature. 🫶

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🎀 ARGUMENTS 🎀

• pt — the per-CPU pt context. that’s the argument, and she’s iconic 💖

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🦋 DESCRIPTION 🦋

Update the buffer’s current write pointer position and data size. that’s the described task, short and sweet — literally the whole flex 🌟

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👑 SEE ALSO 👑

go read these next, bestie, they’re all part of the pt cinematic universe:

• Kernel file ./arch/x86/events/intel/pt.c
• struct topa(9)
• struct topa_page(9)
• topa_alloc(9)
• topa_free(9)
• topa_insert_table(9)
• topa_table_full(9)
• topa_insert_pages(9)
• pt_topa_dump(9)
• pt_buffer_advance(9)
• pt_buffer_region(9)
• pt_buffer_region_size(9)
• pt_handle_status(9)
• pt_read_offset(9)
• pt_buffer_reset_markers(9)
• pt_buffer_reset_offsets(9)
• pt_buffer_fini_topa(9)
• pt_buffer_init_topa(9)
• pt_buffer_setup_aux(9)
• pt_buffer_free_aux(9)
• intel_pt_interrupt(9)

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mwah 💋 — source/version situation: ./arch/x86/events/intel, dated October 2026, and signed pt_update_head(9). stay slay, bestie 🫶