viortc_ptp_do_xtstamp(9)

✨ viortc_ptp_do_xtstamp 💫

okay bestie, welcome to the viortc_ptp_do_xtstamp(9) page — it's a kernel API manual entry and it's literally the whole vibe of "hey device, gimme a crosststamp please" 🫶

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🌸 NAME 🌸

viortc_ptp_do_xtstamp — get crosststamp from device ✨

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🎀 SYNOPSIS 🎀

int viortc_ptp_do_xtstamp (struct viortc_ptp_clock *vio_ptp , u8
hw_counter , enum clocksource_ids cs_id , struct viortc_ptp_cross_ctx
*ctx );

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🦋 ARGUMENTS 🦋

• vio_ptp — the virtio_rtc PTP clock, aka the main character of this whole situation 👑
• hw_counter — the virtio_rtc HW counter type, it's a u8, slay 💅
• cs_id — the clocksource id that corresponds to hw_counter, no cap they're a matched set 🎀
• ctx — the context for get_device_system_crosststamp, keeping it all organized fr fr

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💖 DESCRIPTION 💖

Reads the HW-specific crosststamp from the device. That's it. That's the whole plot. it's giving "just go ask the hardware nicely" 😭✨

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⭐ CONTEXT ⭐

Process context. so like, normal sleepable vibes, not some interrupt-y chaos 🙈

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🌈 RETURN 🌈

• Zero on success 🎉
• negative error code otherwise 💀

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🔥 SEE ALSO 🔥

• Kernel file ./drivers/virtio/virtio_rtc_ptp.c
• struct viortc_ptp_clock(9)
• struct viortc_ptp_cross_ctx(9)
• viortc_ptp_get_time_fn(9)
• viortc_ptp_getcrosststamp(9)
• viortc_ptp_unregister(9)
• viortc_ptp_get_cross_cap(9)
• viortc_ptp_register(9)

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ok that's the whole page bestie, go read the source and hydrate 💜

sign-off szn 🎀 — this one's from the ./drivers/virtio source tree, dated October 2026, and you can find it filed under viortc_ptp_do_xtstamp(9) in the Kernel API Manual. obsessed. periodt. 💅✨