hfi1_alloc_devdata(9)

🧚 hfi1_alloc_devdata(9) — aka the Kernel API Manual page you're literally about to understand 💅

okay bestie, so this is a page from the Kernel API Manual and it's about one (1) function that sets up the whole main-character data structure for a unit. no cap, it's important. let's go 🎀

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✨ NAME ✨

hfi1_alloc_devdata — the function that allocates our primary per-unit data structure. like, the big one. the blueprint. the whole vibe 🫶

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🌸 SYNOPSIS 🌸

struct hfi1_devdata * hfi1_alloc_devdata (struct pci_dev *pdev , size_t
extra );

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🦋 ARGUMENTS 🦋

• pdev — a valid PCI device. like, it has to actually be valid, okay? no fake ones 🙈
• extra — how many bytes to alloc past the default. it's the little bonus room at the end 😌

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💖 DESCRIPTION 💖

so here's the tea: this must be done via the verbs allocator. not optional, not negotiable, that's just the rule 🔥

and why?? because the verbs cleanup process does both the cleanup and the free of the data structure. so if you don't go through the verbs allocator, the cleanup is gonna have a whole crisis 😭 it's giving "we do it together or not at all."

and the extra? that's for chip-specific data. every chip gets to bring its own little extras to the function, and honestly? slay 💅

ngl this is one of those "just follow the instructions" situations — use the verbs allocator, no shortcuts, periodt 👑

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⭐ SEE ALSO ⭐

• Kernel file ./drivers/infiniband/hw/hfi1/init.c
• 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_free_devdata(9)
• hfi1_create_rcvhdrq(9)
• hfi1_setup_eagerbufs(9)

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and that's the page, bestie!! 🎀✨ this one's proudly brought to you by the good people over at ./drivers/infiniband/hw/hfi1, dated October 2026 — so go forth, alloc that devdata, and remember: verbs allocator or bust 💜🦋🌸