cpumask_parse(9)

💅 cpumask_parse(9) — kernel API manual, but make it cute

okay so bestie, welcome to the cpumask_parse(9) page from the Kernel API Manual ✨ this is the one that goes "here's a string, gimme a cpumask out of it" and honestly? she serves. let's get into it 🫶

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🎀 NAME 🎀

cpumask_parse — extract a cpumask from a string. that's it, that's the whole job, and she does it flawlessly 💅

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✨ SYNOPSIS ✨

int cpumask_parse (const char *buf , struct cpumask *dstp );

like… look at her. two args, one int, zero drama 🌸

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🦋 ARGUMENTS 🦋

• buf — the buffer you're extracting from, i.e. the string with the actual mask info in it. it's the source material, the main character, the text you're reading from 📖
• dstp — the cpumask you're setting. this is the destination, the glow-up target, the girl who gets the makeover 💖

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👑 RETURN 👑

-errno, or 0 for success. so if it's 0 you're slaying, and if it's negative you got an errno and it's giving "something went wrong" 😭 no cap.

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🌈 SEE ALSO 🌈

okay this section is long because the whole cpumask family is huge and they all live in the kernel file ./include/linux/cpumask.h. every single one, no skipping, no cap:

• 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), cpulist_parse(9), cpumask_size(9), alloc_cpumask_var(9), to_cpumask(9), num_online_cpus(9), cpumap_print_bitmask_to_buf(9), cpumap_print_list_to_buf(9)

real talk: it's a whole friend group and they all ate 🔥

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💜 sign-off 💜

this page lives in the source ./include/linux, dated October 2026, and it's the cpumask_parse(9) entry of the Kernel API Manual. ty for reading bestie, go parse a mask, you're gonna do iconic 💅✨🎀