_eeh_pe_bus_get(9)

💅 _eeh_pe_bus_get(9) 💅

okay so this is the Kernel API Manual entry for _eeh_pe_bus_get, and it’s literally about grabbing the right PCI bus for a given PE. bestie, let’s get into it 🫶

🌸 NAME 🌸

_eeh_pe_bus_get — Retrieve PCI bus according to the given PE

✨ SYNOPSIS ✨

struct pci_bus * _eeh_pe_bus_get (struct eeh_pe *pe , bool do_lock );

🎀 ARGUMENTS 🎀

• pe — EEH PE. that’s the PE you’re working with 💖
• do_lock — the check for whether the caller already holds the pci_lock_rescan_remove. like, are we already locked or not, bestie? 🔐

🦋 DESCRIPTION 🦋

Retrieve the PCI bus according to the given PE. Basically, there are 3 types of PEs: PHB/Bus/Device — and the way this works is lowkey type-dependent 👑

• For PHB PE, the primary PCI bus will be retrieved. iconic.
• The parent bus will be returned for BUS PE. slay.
• However, we don’t have an associated PCI bus for DEVICE PE.

no associated PCI bus for DEVICE PE — so don’t go looking for one, bestie 😭💀

💜 SEE ALSO 💜

Kernel file ./arch/powerpc/kernel/eeh_pe.c plus these whole entire besties:

• eeh_set_pe_aux_size(9)
• eeh_pe_alloc(9)
• eeh_phb_pe_create(9)
• eeh_wait_state(9)
• eeh_phb_pe_get(9)
• eeh_pe_next(9)
• eeh_pe_traverse(9)
• eeh_pe_dev_traverse(9)
• __eeh_pe_get(9)
• eeh_pe_get(9)
• eeh_pe_tree_insert(9)
• eeh_pe_tree_remove(9)
• eeh_pe_update_time_stamp(9)
• eeh_pe_state_mark(9)
• eeh_pe_mark_isolated(9)
• eeh_pe_state_clear(9)
• eeh_restore_one_device_bars(9)
• eeh_pe_restore_bars(9)
• eeh_pe_loc_get(9)
• eeh_pe_loc_get_bus(9)
• eeh_pe_bus_get(9)
• eeh_pe_bus_get_nolock(9)

✨ cute lil footer tea: source/version path is ./arch/powerpc/kernel, dated October 2026, and the page title is _eeh_pe_bus_get(9). byeee, mwah 💋🎀