pcpu_obj_full_size(9)

🎀 pcpu_obj_full_size(9) 🎀

okay bestie, welcome to the pcpu_obj_full_size(9) page from the Kernel API Manual 🫶 this one is short, sweet, and very much giving “tiny helper, big job” energy 💅

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✨ NAME ✨

pcpu_obj_full_size — helper to calculate size of each accounted object. literally does what it says on the tin ✨

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🌸 SYNOPSIS 🌸

the signature, character for character:

size_t pcpu_obj_full_size (size_t size );

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🎀 ARGUMENTS 🎀

• size — the size of the area to allocate, measured in bytes. yes bestie, bytes 🫶

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💅 DESCRIPTION 💅

okay so for each accounted object, there’s an extra space that’s used to store obj_cgroup membership if kmemcg is not disabled. and yeah — this helper charges that extra space too 💸✨ no sneaky free space here, periodt.

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🦋 SEE ALSO 🦋

Kernel file ./mm/percpu-internal.h — plus these cuties: pcpu_chunk_nr_blocks(9), pcpu_nr_pages_to_map_bits(9), and pcpu_chunk_map_bits(9). iykyk 🌈

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mwah 💋 sign-off time: this page is from source/version ./mm, dated October 2026, and it’s the pcpu_obj_full_size(9) page. bye bestie, go read the kernel with main character energy 👑💖