ptp_convert_timestamp(9)

💅 ptp_convert_timestamp — the kernel API manual, bestie edition

okay so real talk, this is a page from the Kernel API Manual (ptp_convert_timestamp(9)) and it's honestly such a serve — it's literally just one function doing one lil glow-up on your timestamps ✨

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🎀 NAME 🎀

ptp_convert_timestamp — converts a timestamp into a ptp vclock time, no cap 🕐➡️🕐

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✨ SYNOPSIS ✨

ktime_t ptp_convert_timestamp (const ktime_t *hwtstamp , int
       vclock_index );

like, that's the whole signature, she's compact and iconic 💅

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🦋 ARGUMENTS 🦋

• hwtstamp — the timestamp you're feeding in, bestie 🫶
• vclock_index — the phc index of the ptp vclock. that's the one you gotta point at 👑

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🌸 RETURN 🌸

it hands you back the converted timestamp 🎉 — or 0 on error, which is the sad path 😭 (so like, always check, fr fr)

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💖 SEE ALSO 💖

okay this list is long and honestly kind of a flex, so buckle up buttercup 🌈

first, the kernel file itself: ./include/linux/ptp_clock_kernel.h

and then the whole friend group 💜:

• struct ptp_clock_request(9)
• struct ptp_system_timestamp(9)
• struct ptp_clock_info(9)
• struct ptp_clock_event(9)
• scaled_ppm_to_ppb(9)
• diff_by_scaled_ppm(9)
• adjust_by_scaled_ppm(9)
• ptp_clock_register(9)
• ptp_clock_unregister(9)
• ptp_clock_event(9)
• ptp_clock_index(9)
• ptp_clock_index_by_of_node(9)
• ptp_clock_index_by_dev(9)
• ptp_find_pin(9)
• ptp_find_pin_unlocked(9)
• ptp_schedule_worker(9)
• ptp_cancel_worker_sync(9)
• ptp_get_vclocks_index(9)

(and yes, ptp_clock_event(9) shows up twice in the original — she said main character energy so nice she listed it twice 💀 iconic behavior honestly)

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lowkey reminder: that ./include/linux/ptp_clock_kernel.h path and every single one of those (9) refs is exact — don't go editing them, iykyk 🔥

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🌈 and that's the whole page, bestie! this one's from ./include/linux, dated October 2026, and it's ptp_convert_timestamp(9) — periodt. go convert some timestamps and slay 👑💜