cpumask_size(9)

🌸 NAME 🌸

okay so bestie, this is cpumask_size(9), straight out of the Kernel API Manual, and it is literally the function that calculates the size to allocate for a struct cpumask in bytes. 💅 no cap.

✨ SYNOPSIS ✨

unsigned int cpumask_size (void );

that's the whole signature, bestie — yes, with that exact space situation. 🫶

🎀 ARGUMENTS 🎀

• void — no arguments. literally none. zero. the void is voiding. 🦋

🔥 RETURN 🔥

• size to allocate for a struct cpumask in bytes. that's it, that's the return value. 💖

🦋 SEE ALSO 🦋

Kernel file ./include/linux/cpumask.h says hi, and here's the whole friend group:

• cpumask_pr_args(9), cpumask_first(9), cpumask_first_zero(9), cpumask_first_and(9), cpumask_first_andnot(9), cpumask_first_and_and(9), cpumask_last(9)
• cpumask_next(9), cpumask_next_zero(9), cpumask_next_and(9), cpumask_next_andnot(9), cpumask_next_and_wrap(9), cpumask_next_wrap(9), cpumask_random(9)
• for_each_cpu(9), for_each_cpu_wrap(9), for_each_cpu_and(9), for_each_cpu_andnot(9), for_each_cpu_or(9), for_each_cpu_from(9), cpumask_any_but(9), cpumask_any_and_but(9), cpumask_any_andnot_but(9)
• cpumask_nth(9), cpumask_nth_and(9), cpumask_nth_and_andnot(9), cpumask_set_cpu(9), cpumask_clear_cpus(9), cpumask_clear_cpu(9), cpumask_test_cpu(9), cpumask_test_and_set_cpu(9), cpumask_test_and_clear_cpu(9)
• cpumask_setall(9), cpumask_clear(9), cpumask_and(9), cpumask_or(9), cpumask_weighted_or(9), cpumask_xor(9), cpumask_andnot(9), cpumask_equal(9), cpumask_or_equal(9)
• cpumask_intersects(9), cpumask_subset(9), cpumask_empty(9), cpumask_full(9), cpumask_weight(9), cpumask_weight_and(9), cpumask_weight_andnot(9), cpumask_shift_right(9), cpumask_shift_left(9)
• cpumask_copy(9), cpumask_any(9), cpumask_any_and(9), cpumask_of(9), cpumask_parse_user(9), cpumask_parselist_user(9), cpumask_parse(9), cpulist_parse(9), alloc_cpumask_var(9), to_cpumask(9)
• num_online_cpus(9), cpumap_print_bitmask_to_buf(9), cpumap_print_list_to_buf(9)

mwah 💋 — source/version is ./include/linux, date is October 2026, and the page is cpumask_size(9). bye bestie, go allocate exactly the right amount of bytes. 🎀✨