pcpu_post_map_flush(9)

💖 pcpu_post_map_flush(9) 💖

okay so bestie, welcome to the Kernel API Manual entry for pcpu_post_map_flush(9) — it's giving “pages just got mapped, now flush the cache” energy, and honestly? iconic. 💅

📛 NAME 📛

pcpu_post_map_flush — flush cache after mapping. no cap, that's the whole assignment. ✨

✨ SYNOPSIS ✨

void pcpu_post_map_flush (struct pcpu_chunk *chunk , int page_start ,
       int page_end );

🧚 ARGUMENTS 🧚

• chunk — the pcpu_chunk that the regions to be flushed belong to. yes, we know whose pages these are, bestie. 🫶
• page_start — page index of the first page to be flushed. literally the starting page index. 🌸
• page_end — page index of the last page to be flushed + 1. yep, the + 1 is right there, bestie — not a typo, not a vibe, just math. 💅

💖 DESCRIPTION 💖

Pages [page_start,page_end) of chunk have been mapped. Flush cache. that's it, that's the moment. 🔥

As with pcpu_pre_unmap_flush, TLB flushing also is done at once for the whole region. so yeah, the whole region gets that TLB flush treatment at once — no tiny piecemeal moment, fr fr. 🌈

🌈 SEE ALSO 🌈

• Kernel file ./mm/percpu-vm.c
• 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_populate_chunk(9)
• pcpu_depopulate_chunk(9)
• pcpu_should_reclaim_chunk(9)

xoxo, your Kernel API Manual bestie 🫶 — this lil page lives under ./mm, dated October 2026, and it's literally pcpu_post_map_flush(9). periodt. 💅