STRUCT W1_FAMILY(9)

💜 struct w1_family(9) — the Kernel API Manual, but make it a group chat

okay so bestie, welcome to struct w1_family from the Kernel API Manual ✨ this is literally the reference counted family structure — say that five times fast. it's giving "small struct, big responsibilities" and honestly? we're obsessed. 🎀

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✨ NAME ✨

struct w1_family — reference counted family structure. that's it, that's the whole vibe. 👑

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🌸 SYNOPSIS 🌸

struct w1_family {
    struct list_head        family_entry;
    u8 fid;
    const struct w1_family_ops *fops;
    const struct of_device_id *of_match_table;
    atomic_t refcnt;
 };

look at her. five fields. no notes. 💅

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🦋 Members 🦋

here's the member-by-member breakdown, no cap:

• family_entry — the family linked list. it's literally how this family hangs out with all the other families. main character in the list, honestly. 🔥
• fid — an 8 bit family identifier. eight whole bits. so tiny, so iconic. 🍓
• fops — the operations for this family. this is where the ✨functionality✨ lives, bestie. 💖
• of_match_table — the open firmware match table. yes, "open firmware," not "OF" like the slang — stay focused. 🌈
• refcnt — the reference counter. it's an atomic_t, so it's keeping track of who's holding on and how many. extremely responsible of her. 🫶

⭐ reminder: refcnt is atomic_t, so like... don't go doing non-atomic shenanigans with it, iykyk.

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💀 SEE ALSO 💀

• Kernel file ./include/linux/w1.h
• struct w1_reg_num(9)
• struct w1_slave(9)
• struct w1_bus_master(9)
• enum w1_master_flags(9)
• struct w1_master(9)
• struct w1_family_ops(9)
• module_w1_family(9)

go read those too, bestie, they're all part of the same friend group 💅✨

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and that's the whole page! 🎀 brought to you straight out of ./include/linux, dated October 2026 — so yeah, future energy, but make it kernel. stay slay, read your headers, and remember: every family needs a refcnt. periodt. 💖🦋🌸