hfi1_free_devdata(9)

✨ hfi1_free_devdata(9) ✨

okay so bestie, welcome to the hfi1_free_devdata page — it lives in section 9 of the kernel API manual, and it's the ✨cleanup era✨ chapter of the hfi1 story. Let's get into it 🫶

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💖 NAME 💖

hfi1_free_devdata — the one that cleans up and frees the per-unit data structure. it's giving "you made the mess, now let's put it away" energy 🧹✨

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🦋 SYNOPSIS 🦋

void hfi1_free_devdata(struct hfi1_devdata *dd);

notice the void? yeah. it returns nothing. no status, no error code, no lil report card. it just does the thing and dips 💅

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🎀 ARGUMENTS 🎀

• dd — pointer to a valid devdata structure. like, a valid one, okay? that's the whole requirement, and honestly it's doing a lot of heavy lifting in that sentence 😭

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🌸 DESCRIPTION 🌸

so what does it actually do? it cleans up and frees all the data structures that were set up by hfi1_alloc_devdata. that's the tea ☕ — alloc builds the whole little world, and hfi1_free_devdata is the one that tears it all down and hands the memory back. no cap, it's the matching set 🎀✨

lowkey the most romantic thing about this function is the symmetry — you can't have the alloc without the free, iykyk 🦋

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👑 SEE ALSO 👑

the kernel file lives at ./drivers/infiniband/hw/hfi1/init.c — go peek if you're nosy (respectfully) 📂

and here's the whole friend group, all of them, no one left out 💜:

• hfi1_rcd_free(9)
• hfi1_rcd_put(9)
• hfi1_rcd_get(9)
• allocate_rcd_index(9)
• hfi1_rcd_get_by_index_safe(9)
• hfi1_rcd_get_by_index(9)
• hfi1_free_ctxt(9)
• init_after_reset(9)
• create_workqueues(9)
• destroy_workqueues(9)
• enable_general_intr(9)
• hfi1_init(9)
• shutdown_device(9)
• hfi1_free_ctxtdata(9)
• hfi1_alloc_devdata(9)
• hfi1_create_rcvhdrq(9)
• hfi1_setup_eagerbufs(9)

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a lil reminder from your girl: this page is filed under ./drivers/infiniband/hw/hfi1, and the date on it is October 2026, and yes the man page name is literally hfi1_free_devdata(9) — so if you were wondering "wait is this the right page," it is, it is, periodt 💅✨

okay bye bestie, go free your devdata responsibly 🎀💖🌈