STRUCT DMA_HEAP(9)

💖 NAME 💖

so like, struct dma_heap — bestie, it literally represents a dmabuf heap in the system. that's it, that's the vibe. 👑

(this is from the Kernel API Manual, page struct dma_heap(9), iykyk ✨)

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🌸 SYNOPSIS 🌸

okay so here's the whole struct, no cap, copy it exactly:

struct dma_heap {
    const char *name;
    const struct dma_heap_ops *ops;
    void *priv;
    dev_t heap_devt;
    struct list_head list;
    struct cdev heap_cdev;
 };

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🎀 Members 🎀

every field is a main character here, let's do a vibe check on all of them 🫶

• name — used for debugging/device-node name. literally the heap's little nametag 💅
• ops — the ops struct for this heap. it's giving "here's all my functions" energy ✨
• priv — private data for this heap. secrets, we keep them 🙈
• heap_devt — heap device node. the dev_t girlie 💜
• list — list head connecting to list of heaps. she's in the group chat with all the other heaps, fr fr 🦋
• heap_cdev — heap char device. iconic 🎀

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🦋 Description 🦋

so basically: this struct represents a heap of memory from which buffers can be made. that's the whole plot 💖 slay.

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⭐ SEE ALSO ⭐

• Kernel file ./drivers/dma-buf/dma-heap.c
• dma_heap_get_drvdata(9)
• dma_heap_get_name(9)
• dma_heap_add(9)

go read them, bestie, they're lowkey obsessed with this struct 🔥

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and that's the page!! 🫶 this cutie lives in ./drivers/dma-buf, dated October 2026, and it's filed under struct dma_heap(9) — periodt, no notes, ate and left no crumbs 💅✨🌈