alloc_tree_node(9)

🌸 NAME 🌸

okay bestie, straight from the Kernel API Manual: alloc_tree_node — returns a device entry in the iotree. that’s the whole vibe ✨

✨ SYNOPSIS ✨

struct parisc_device * alloc_tree_node (struct device *parent , char id
       );

🎀 ARGUMENTS 🎀

• parent — the parent node in the tree, aka the main character it’s checking under 💅
• id — the element of the module path for this entry, no cap 🫶

💅 DESCRIPTION 💅

so here’s the tea: it checks all the children of parent for a matching id. if none found, it allocates a new device and returns it. that’s it, that’s the function, and it ate 🔥

🦋 SEE ALSO 🦋

bestie, the kernel file ./arch/parisc/kernel/drivers.c is right there, and these are the friends in the group chat:

• for_each_padev(9)
• match_device(9)
• register_parisc_driver(9)
• count_parisc_driver(9)
• unregister_parisc_driver(9)
• find_pa_parent_type(9)
• print_pa_hwpath(9)
• get_pci_node_path(9)
• print_pci_hwpath(9)
• register_parisc_device(9)
• match_pci_device(9)
• match_parisc_device(9)
• parse_tree_node(9)
• hwpath_to_device(9)
• device_to_hwpath(9)
• walk_native_bus(9)
• walk_central_bus(9)
• init_parisc_bus(9)
• print_parisc_devices(9)

mwah 💋 this page’s source/version hangout is ./arch/parisc/kernel, it’s dated October 2026, and the name on the marquee is alloc_tree_node(9). bye bestie, go slay some device entries 🫶💖