of_get_next_cpu_node(9)

💅 NAME 💅

okay so of_get_next_cpu_node — bestie, it's literally the "iterate on cpu nodes" function, that's the whole vibe ✨ (manual fam: Kernel API Manual 🎀)

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🌸 SYNOPSIS 🌸

struct device_node * of_get_next_cpu_node (struct device_node *prev );

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🦋 ARGUMENTS 🦋

• prev — the previous child of the /cpus node, or NULL if you wanna grab the very first one 🫶 (yes, passing NULL is the "start me from the top" move, no cap)

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✨ DESCRIPTION ✨

so like, here's the tea ☕ — unusable CPUs get skipped. and by "unusable" we mean the ones whose status property is set to "fail" or "fail-..." 💀 they literally do not get a turn, they're not invited to the function, it's giving filtered out fr fr.

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👑 RETURN 👑

you get back a cpu node pointer with its refcount incremented 🔥 — so bestie, you must call of_node_put on it when you're done, that's not optional, that's the rule 💅

and if prev happens to be the last child? you get NULL back. that's the end of the line, the credits rolling, the 🎬.

oh also — it decrements the refcount of prev. so it's doing cleanup on its way past, iconic behavior honestly 🌈

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🔥 SEE ALSO 🔥

the kernel file is ./drivers/of/base.c and here's the whole extended friend group of of_* besties (they all live in the same section 9 neighborhood, iykyk) 💖

• of_find_all_nodes(9)
• __of_device_is_compatible(9)
• of_machine_compatible_match(9)
• of_machine_read_compatible(9)
• of_machine_read_model(9)
• of_machine_get_match(9)
• of_machine_get_match_data(9)
• __of_device_is_available(9)
• __of_device_is_reserved(9)
• of_device_is_available(9)
• __of_device_is_fail(9)
• of_device_is_big_endian(9)
• of_get_parent(9)
• of_get_next_parent(9)
• of_get_next_child(9)
• of_get_next_child_with_prefix(9)
• of_get_next_available_child(9)
• of_get_next_reserved_child(9)
• of_get_compatible_child(9)
• of_get_child_by_name(9)
• of_get_available_child_by_name(9)
• of_find_node_opts_by_path(9)
• of_find_node_by_name(9)
• of_find_node_by_type(9)
• of_find_compatible_node(9)
• of_find_node_with_property(9)
• of_match_node(9)
• of_find_matching_node_and_match(9)
• of_alias_from_compatible(9)
• of_find_node_by_phandle(9)
• of_parse_phandle_with_args_map(9)
• of_count_phandle_with_args(9)
• __of_add_property(9)
• of_add_property(9)
• of_remove_property(9)
• of_alias_scan(9)
• of_alias_get_id(9)
• of_alias_get_highest_id(9)
• of_console_check(9)
• of_find_next_cache_node(9)
• of_find_last_cache_level(9)
• of_map_id(9)
• of_map_iommu_id(9)
• of_map_msi_id(9)

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okay that's the whole page, mwah 💋 this lil beauty ships from ./drivers/of and it's dated October 2026 🌸 and it's filed under of_get_next_cpu_node(9) in case you need to find it again — go forth and iterate responsibly bestie, and don't forget of_node_put or I will find out 🧚‍♀️💜