pcpu_get_pages(9)

hey bestie 💖 welcome to the <pink>pcpu_get_pages(9)</pink> page from the Kernel API Manual. it’s short, it’s useful, and it’s about to make sense, fr fr.

🌸 NAME 🌸

pcpu_get_pages — get temp pages array ✨

✨ SYNOPSIS ✨

the whole signature is giving:

struct page ** pcpu_get_pages (gfp_t gfp );

🎀 ARGUMENTS 🎀

• gfp — the allocation flags you pass to the underlying allocator. set it to 0 and it will only return the cached array. that’s the whole vibe check 🫶

🦋 DESCRIPTION 🦋

okay so this returns a pointer to an array of pointers to struct page — and you can index that array with pcpu_page_idx. lowkey important: there is only one array, so accesses should be serialized by pcpu_alloc_mutex. no cap, don’t be messy about that 💅

💅 RETURN 💅

Pointer to temp pages array on success 🔥

🌈 SEE ALSO 🌈

the kernel file is ./mm/percpu-vm.c, and the bestie list is:

• pcpu_free_pages(9)
• pcpu_alloc_pages(9)
• pcpu_pre_unmap_flush(9)
• pcpu_unmap_pages(9)
• pcpu_post_unmap_tlb_flush(9)
• pcpu_map_pages(9)
• pcpu_post_map_flush(9)
• pcpu_populate_chunk(9)
• pcpu_depopulate_chunk(9)
• pcpu_should_reclaim_chunk(9)

that’s the whole page, bestie 🫶 signing off from source/version ./mm, dated October 2026, with pcpu_get_pages(9) energy 💜