pcpu_populate_chunk(9)

💖 NAME 💖

okay so bestie, meet pcpu_populate_chunk(9) — straight out of the Kernel API Manual ✨. Its whole thing is to populate and map an area of a pcpu_chunk. that's the vibe 🫶.

✨ SYNOPSIS ✨

int pcpu_populate_chunk (struct pcpu_chunk *chunk , int page_start , int page_end , gfp_t gfp );

🎀 ARGUMENTS 🎀

• chunk — the chunk of interest 🎀
• page_start — the start page
• page_end — the end page
• gfp — allocation flags passed to the underlying memory allocator

🦋 DESCRIPTION 🦋

For each cpu, it populates and maps pages [page_start,page_end) into chunk. no cap, that is literally the whole description and it ate 💅.

💅 CONTEXT 💅

Heads up, bestie: the context is pcpu_alloc_mutex, and it does gfp allocation. keep that in mind, iykyk 😌.

🌸 SEE ALSO 🌸

Kernel file ./mm/percpu-vm.c — plus the whole friend group:

• pcpu_get_pages(9)
• 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_depopulate_chunk(9)
• pcpu_should_reclaim_chunk(9)

mwah 💋 sign-off from source ./mm, October 2026, for pcpu_populate_chunk(9) — out ✨.