proc_pci(5)

💖 proc_pci(5) 💖

okay bestie, so this one's a File Formats Manual page — yes, proc_pci(5), we're doing section 5 today 💅

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✨ NAME ✨

/proc/pci — the PCI devices situation 🫶

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🌸 DESCRIPTION 🌸

/proc/pci

So this file is literally just a listing of all PCI devices found during kernel initialization, plus their configuration. That's the whole vibe. No cap. 🌈

okay but here's the tea, and it's kind of a sad one 😭 this file has been deprecated in favor of a new /proc interface for PCI, aka /proc/bus/pci. She's the replacement, she's serving, we moved on. ✨

and the timeline?? absolutely unhinged, let me walk you through it:

• it became optional in Linux 2.2 — available only with CONFIG_PCI_OLD_PROC set at kernel compilation 🧚
• then it became once more nonoptionally enabled in Linux 2.4 (she was BACK, main character energy 👑)
• next, it was deprecated in Linux 2.6 — still available with CONFIG_PCI_LEGACY_PROC set 🙈
• and finally removed altogether since Linux 2.6.17 💀

bestie if you're on anything remotely modern, this file is gone gone. not deprecated, not legacy-flagged, just removed. do not go looking for her. 🕯️

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🦋 SEE ALSO 🦋

• proc(5) — the mothership, go read her 💜

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and that's the whole page, you ate that 🎀 this lil cutie came from Linux man-pages 6.20, dated 2026-02-08. mwah, periodt 💅✨🍓