eeh_pe_bus_get_nolock(9)

📦 version 7.3.1, in nixpkgs unstable

💅 eeh_pe_bus_get_nolock — the Kernel API Manual files

okay so bestie, welcome to the Kernel API Manual, and today's main character is eeh_pe_bus_get_nolock 🎀 she's a little helper from the PowerPC EEH world and honestly she's giving "I do one thing and I do it without a lock" energy.

✨ NAME ✨

eeh_pe_bus_get_nolock — Retrieve PCI bus associated with the given EEH PE without locking 🦋

like yes, that's literally the whole vibe: you hand her a PE, she hands you back a bus, and she does not take the lock. no cap.

🌸 SYNOPSIS 🌸

struct pci_bus * eeh_pe_bus_get_nolock (struct eeh_pe *pe );

look at her. one argument. zero drama (lock-wise, anyway 💀).

💖 ARGUMENTS 💖

  • pe — Pointer to the EEH PE 💫 that's the PE you're asking about, bestie. that's it, that's the whole input.

👑 DESCRIPTION 👑

so here's the tea ☕ this function is a variant of _eeh_pe_bus_get, and what she does is retrieve the PCI bus associated with the specified EEH PE — but without acquiring the pci_lock_rescan_remove lock. not me skipping the lock 😭 (deliberately, though!!).

because of that, you should only use her when the caller can guarantee safe access to PE structures without needing that lock — typically in contexts where the lock is already held or where locking is otherwise managed 🫶. like, she's not out here being reckless, you are, if you call her wrong. iykyk.

🦋 RETURN 🦋

she returns a pointer to the PCI bus associated with the EEH PE, or NULL if none is found 🌈. simple. iconic. periodt.

💀 NOTE 💀

use this function carefully to avoid race conditions and data corruption 🙈🔥 like fr fr, the no-lock life is cute until it isn't.

🧚 SEE ALSO 🧚

Kernel file ./arch/powerpc/kernel/eeh_pe.c — and the whole friend group 💜:

kisses and good vibes from ./arch/powerpc/kernel — this little page is dated October 2026, and it's eeh_pe_bus_get_nolock(9) signing off 💅✨🎀 stay locked (when you should be) bestie 🫶

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