pcpu_block_refresh_hint(9)

✨ NAME ✨

pcpu_block_refresh_hint — bestie, the original page literally leaves the description blank after the dash, so no spoilers here 💀 we still stan the function name tho 🫶

okay so welcome to pcpu_block_refresh_hint(9) from the Kernel API Manual — it’s giving kernel-internals realness and we’re gonna read it together like besties ✨💖

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🎀 SYNOPSIS 🎀

here’s the exact signature, no cap:

void pcpu_block_refresh_hint (struct pcpu_chunk *chunk , int index );

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🌸 ARGUMENTS 🌸

two args, both iconic:

• chunk — chunk of interest 👀 like, the chunk we’re checking out
• index — index of the metadata block 🎯

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🦋 DESCRIPTION 🦋

so what does it do? It scans over the block beginning at first_free and updates the block metadata accordingly. That’s the whole vibe check, periodt. 💅✨

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💖 SEE ALSO 💖

the whole friend group 💖 plus the kernel file:

• Kernel file ./mm/percpu.c
• 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_update_hint_alloc(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)

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mwah 💋 that’s the page! footer vibes: source/version ./mm, date October 2026, page pcpu_block_refresh_hint(9). bye bestie, go refresh those hints ✨🎀