pcpu_block_u...e_hint_alloc(9)

🌸 NAME 🌸

okay bestie, welcome to the Kernel API Manual page for pcpu_block_update_hint_alloc — and its whole personality is update hint on allocation path 💅✨

pcpu_block_update_hint_alloc — update hint on allocation path 🫶

✨ SYNOPSIS ✨

void pcpu_block_update_hint_alloc (struct pcpu_chunk *chunk , int
       bit_off , int bits );

🎀 ARGUMENTS 🎀

• chunk — chunk of interest 👀💖
• bit_off — chunk offset 🎯
• bits — size of request 📏

🦋 DESCRIPTION 🦋

This one updates the metadata for the allocation path. The metadata only has to be refreshed by a full scan iff the chunk's contig hint is broken. Block level scans are required if the block's contig hint is broken. No cap, that's the whole vibe check 🔥

🌈 SEE ALSO 🌈

Kernel file ./mm/percpu.c is the home base, and the whole squad is:

• pcpu_addr_in_chunk(9)
• pcpu_check_block_hint(9)
• pcpu_next_md_free_region(9)
• pcpu_next_fit_region(9)
• pcpu_mem_zalloc(9)
• pcpu_mem_free(9)
• pcpu_chunk_relocate(9)
• pcpu_block_update(9)
• pcpu_chunk_refresh_hint(9)
• pcpu_block_refresh_hint(9)
• pcpu_block_update_hint_free(9)
• pcpu_is_populated(9)
• pcpu_find_block_fit(9)
• pcpu_alloc_area(9)
• pcpu_free_area(9)
• pcpu_alloc_first_chunk(9)
• pcpu_chunk_populated(9)
• pcpu_chunk_depopulated(9)
• pcpu_chunk_addr_search(9)
• pcpu_alloc(9)
• pcpu_balance_free(9)
• pcpu_balance_populated(9)
• pcpu_reclaim_populated(9)
• pcpu_balance_workfn(9)
• free_percpu(9)
• is_kernel_percpu_address(9)
• per_cpu_ptr_to_phys(9)
• pcpu_alloc_alloc_info(9)
• pcpu_free_alloc_info(9)
• pcpu_dump_alloc_info(9)
• pcpu_setup_first_chunk(9)
• pcpu_build_alloc_info(9)
• pcpu_embed_first_chunk(9)
• pcpu_page_first_chunk(9)

okay bestie, that's the whole page — source/version ./mm, dated October 2026, and filed under pcpu_block_u...e_hint_alloc(9) 💖✨👑