sbitmap_weight(9)

💖 NAME 💖

okay so bestie, this is sbitmap_weight(9) from the Kernel API Manual, and it is lowkey iconic for being exactly what it says 🫶. It returns how many set and not cleared bits are living in a &struct sbitmap — no cap, just the count, and it's giving tiny-but-mighty main character energy ✨.

🌸 SYNOPSIS 🌸

the whole signature is literally:

unsigned int sbitmap_weight (const struct sbitmap *sb );

🎀 ARGUMENTS 🎀

• sb — Bitmap to check. That's the one job, and it ate 💅.

🦋 RETURN 🦋

How many set and not cleared bits set — yes, that's the number coming back at you, bestie. The count of set-and-not-cleared bits, periodt 🔥.

🌈 SEE ALSO 🌈

Kernel file ./include/linux/sbitmap.h, plus the whole friend group — iykyk 👑:

• struct sbitmap_word(9)
• struct sbitmap(9)
• struct sbq_wait_state(9)
• struct sbitmap_queue(9)
• sbitmap_init_node(9)
• sbitmap_free(9)
• sbitmap_resize(9)
• sbitmap_get(9)
• sbitmap_any_bit_set(9)
• __sbitmap_for_each_set(9)
• sbitmap_for_each_set(9)
• sbitmap_show(9)
• sbitmap_bitmap_show(9)
• sbitmap_queue_init_node(9)
• sbitmap_queue_free(9)
• sbitmap_queue_recalculate_wake_batch(9)
• sbitmap_queue_resize(9)
• __sbitmap_queue_get(9)
• __sbitmap_queue_get_batch(9)
• sbitmap_queue_get_shallow(9)
• sbitmap_queue_get(9)
• sbitmap_queue_min_shallow_depth(9)
• sbitmap_queue_clear(9)
• sbitmap_queue_clear_batch(9)
• sbq_wait_ptr(9)
• sbitmap_queue_wake_all(9)
• sbitmap_queue_wake_up(9)
• sbitmap_queue_show(9)

source/version: ./include/linux · date: October 2026 — signed, sealed, slayed 💅 sbitmap_weight(9) out, bestie 💖👑