cxgb4_ptp_adjtime(9)

💅 cxgb4_ptp_adjtime — shift the time of the hardware clock ✨

okay so this is a page from the Kernel API Manual, section 9 bestie — yes, the big serious kernel one — and it's all about nudging the hardware clock around. lowercase, no drama, but the vibes are immaculate. let's get into it 🫶

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✨ NAME ✨

cxgb4_ptp_adjtime — shift the time of the hardware clock 🕰️💫

like, literally move the clock. that's the whole job. slay.

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🎀 SYNOPSIS 🎀

int cxgb4_ptp_adjtime (struct ptp_clock_info *ptp , s64 delta );

it gives you back an int (iconic of it), takes your ptp clock info struct, and takes a delta — we'll get to that 💜

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🌸 ARGUMENTS 🌸

• ptp — the ptp clock structure, bestie. the actual clock object you're messing with. main character of this function ngl 🌈
• delta — the desired change, in nanoseconds. yes nanoseconds. tiny. precise. the way that it's so small but so powerful 😭✨

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🦋 DESCRIPTION 🦋

so what does it actually do? it adjusts the timer by resetting the timecounter structure. that's the move. that's the whole move 💅

lowkey a big deal — it's resetting the timecounter structure to do it, so clock behaviour goes through that. no cap, that's exactly what the page says and I'm not adding anything extra 🙈

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💖 SEE ALSO 💖

bestie the whole squad is here, fr fr:

• Kernel file ./drivers/net/ethernet/chelsio/cxgb4/cxgb4_ptp.c 👑
• cxgb4_ptp_is_ptp_tx(9)
• cxgb4_ptp_is_ptp_rx(9)
• cxgb4_ptp_read_hwstamp(9)
• cxgb4_ptprx_timestamping(9)
• cxgb4_ptp_adjfine(9)
• cxgb4_ptp_fineadjtime(9)
• cxgb4_ptp_gettime(9)
• cxgb4_ptp_settime(9)
• cxgb4_ptp_enable(9)
• cxgb4_ptp_init(9)
• cxgb4_ptp_stop(9)

like, the whole ptp friend group ate and left no crumbs 🍓🧚

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okay that's the page!! and before I go — cute lil sign-off moment 🎀 this one's sourced from ./drivers/net/ethernet/chelsio... and it's dated October 2026 (yes she's from the future, we don't question it 😭💀). mwah, go adjust some time bestie 💜✨🦋