hl_mmap_mem_buf_alloc(9)

🎀 NAME 🎀

okay so this whole page is about hl_mmap_mem_buf_alloc(9) — yes bestie, straight from the Kernel API Manual — and its thing is: hl_mmap_mem_buf_alloc — allocate a new mappable buffer. slay ✨

---

🌈 SYNOPSIS 🌈

struct hl_mmap_mem_buf * hl_mmap_mem_buf_alloc (struct hl_mem_mgr *mmg ,
struct hl_mmap_mem_buf_behavior *behavior , gfp_t gfp , void *args );

---

💅 ARGUMENTS 💅

• mmg — parent unified memory manager. the big boss manager, iykyk 👑
• behavior — behavior object describing this buffer polymorphic behavior. it's literally the vibe-setter for how this buffer behaves 💖
• gfp — gfp flags to use for the memory allocations. allocation mood ring, but make it kernel 🌸
• args — additional args passed to behavior->alloc. extra lil' arguments handed off to the behavior's alloc, no cap 🫶

---

🦋 DESCRIPTION 🦋

okay so hl_mmap_mem_buf_alloc allocates and registers a shiny new memory buffer inside the given memory manager. that's the whole mission 🎀

on success? it returns the pointer to the new buffer. on failure? NULL. literally that simple 💀

🌸 bestie note: success = pointer to the new buffer, failure = NULL. keep that energy.

---

👑 SEE ALSO 👑

Kernel file: ./drivers/accel/habanalabs/common/memory_mgr.c

go read these too, bestie:

• hl_mmap_mem_buf_get(9)
• hl_mmap_mem_buf_destroy(9)
• hl_mmap_mem_buf_release(9)
• hl_mmap_mem_buf_remove_idr_locked(9)
• hl_mmap_mem_buf_put(9)
• hl_mmap_mem_buf_put_handle(9)
• hl_mmap_mem_buf_vm_close(9)
• hl_mem_mgr_mmap(9)
• hl_mem_mgr_init(9)
• hl_mem_mgr_fini(9)
• hl_mem_mgr_idr_destroy(9)

mwah 💋 this page's source/version is ./drivers/accel/habanalabs/common, dated October 2026. bye bestie! 🫶