STRUCT HISI_PTT_PMU_BUF(9)

💖 struct hisi_ptt_pmu_buf(9) 💖

okay so bestie, welcome to the Kernel API Manual entry for struct hisi_ptt_pmu_buf — yes that's a whole mouthful, i know, but stay with me because this little struct is genuinely the main character of PTT tracing's AUX buffer situation 🎀

---

✨ NAME ✨

struct hisi_ptt_pmu_buf — the descriptor of the AUX buffer of PTT trace. that's it, that's the vibe. it's literally the lil info card that tells everyone what the AUX buffer looks like 🦋

---

🌸 SYNOPSIS 🌸

struct hisi_ptt_pmu_buf {
    size_t length;
    int nr_pages;
    void *base;
    long pos;
 };

not me formatting that exactly right because the facts do NOT change, periodt 💅

---

👑 Members 👑

okay so here's the cast of characters, one field at a time, no skips, no cuts:

• length — the size of the AUX buffer. how much room we're working with, bestie 📏
• nr_pages — the number of pages of the AUX buffer. yes we're counting pages, it's giving very organized 🗂️
• base — the start address of the AUX buffer. the literal starting point of everything, lowkey iconic 🌟
• pos — the position in the AUX buffer to commit traced data. this is where the traced data actually gets committed, so it's highkey the important one 🙈

---

🦋 SEE ALSO 🦋

the friend group, the whole squad, the iykyk circle:

• Kernel file ./drivers/hwtracing/ptt/hisi_ptt.h struct hisi_ptt_tune_desc(9), struct hisi_ptt_dma_buffer(9), struct hisi_ptt_trace_ctrl(9), struct hisi_ptt_filter_desc(9), struct hisi_ptt_filter_update_info(9), struct hisi_ptt(9)

like, go read those too if you wanna be fully caught up, fr fr 🫶

---

ok that's genuinely the whole page — short and sweet, just like a good group chat message. go forth and trace those AUX buffers 💜

this lil page lives at ./drivers/hwtracing/ptt and it's stamped October 2026 — so like, future energy ✨ slay, bye bestie! 🌈