STRUCT BFQ_WEIGHT_COUNTER(9)

💅 struct bfq_weight_counter(9) — from the Kernel API Manual, bestie ✨

okay so picture this: you're deep in the kernel docs, right, and you stumble on a struct whose whole entire job is counting. that's it. that's the gig. and honestly? iconic. this is struct bfq_weight_counter, and she's a little bookkeeper 🎀

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✨ NAME ✨

struct bfq_weight_counter — a counter of the number of all active queues with a given weight. fr fr that's the whole vibe: she keeps track of how many active queues are rocking each particular weight. no cap. 💖

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🦋 SYNOPSIS 🦋

struct bfq_weight_counter {
    unsigned int weight;
    unsigned int num_active;
    struct rb_node weights_node;
 };

like, look at her. three lil fields, one big purpose. so slay. ✨

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🌸 Members 🌸

(the manpage just puts this heading here with a lil empty vibe underneath — the deets live in the synopsis above, so go peek there 👀)

still, for the group chat, here's what's in the struct:

• unsigned int weight; — the weight this counter is keeping tabs on 💜
• unsigned int num_active; — the number of active queues that have that weight. literally the whole point of the struct, main character energy 👑
• struct rb_node weights_node; — the red-black tree node that hooks this counter up to the weights tree 🌈

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🫶 SEE ALSO 🫶

go touch grass in the kernel file ./block/bfq-iosched.h, and then go say hi to the whole friend group:

• struct bfq_service_tree(9)
• struct bfq_sched_data(9)
• struct bfq_entity(9)
• struct bfq_ttime(9)
• struct bfq_queue(9)
• struct bfq_io_cq(9)
• struct bfq_data(9)
• struct bfq_group(9)

it's giving family reunion 🧚

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one more time for the people in the back: she counts. that is the entire personality. and we stan 💅

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and that's the tea, bestie — brought to you by ./block, dated October 2026, and filed under struct bfq_weight_counter(9) 🍓 mwah 💖✨