ENUM DMAENGINE_ALIGNMENT(9)

🎀 NAME 🎀

hiii bestie, welcome to the enum dmaengine_alignment(9) page from the Kernel API Manual ✨

okay so this enum defines alignment of the DMA async tx buffers. that's the NAME moment. no cap 💖

🌸 SYNOPSIS 🌸

here's the enum in all its main-character glory:

enum dmaengine_alignment {
    DMAENGINE_ALIGN_1_BYTE ,
    DMAENGINE_ALIGN_2_BYTES ,
    DMAENGINE_ALIGN_4_BYTES ,
    DMAENGINE_ALIGN_8_BYTES ,
    DMAENGINE_ALIGN_16_BYTES ,
    DMAENGINE_ALIGN_32_BYTES ,
    DMAENGINE_ALIGN_64_BYTES ,
    DMAENGINE_ALIGN_128_BYTES ,
    DMAENGINE_ALIGN_256_BYTES

};

✨ Constants ✨

so the manual lists nine constants, and every single one is serving the same -- undescribed -- label 😭 not me getting zero extra lore:

• DMAENGINE_ALIGN_1_BYTE — -- undescribed --
• DMAENGINE_ALIGN_2_BYTES — -- undescribed --
• DMAENGINE_ALIGN_4_BYTES — -- undescribed --
• DMAENGINE_ALIGN_8_BYTES — -- undescribed --
• DMAENGINE_ALIGN_16_BYTES — -- undescribed --
• DMAENGINE_ALIGN_32_BYTES — -- undescribed --
• DMAENGINE_ALIGN_64_BYTES — -- undescribed --
• DMAENGINE_ALIGN_128_BYTES — -- undescribed --
• DMAENGINE_ALIGN_256_BYTES — -- undescribed --

literally all nine, bestie 🫶 the names are giving byte-count energy, but the manual itself is not adding any extra description beyond -- undescribed --.

🦋 SEE ALSO 🦋

Kernel file: ./include/linux/dmaengine.h 💖

and here's the whole friend group of references:

• dma_cookie_t(9)
• enum dma_status(9)
• enum dma_transaction_type(9)
• enum dma_transfer_direction(9)
• struct data_chunk(9)
• struct dma_interleaved_template(9)
• struct dma_vec(9)
• enum dma_ctrl_flags(9)
• enum sum_check_bits(9)
• enum sum_check_flags(9)
• enum dma_desc_metadata_mode(9)
• struct dma_chan_percpu(9)
• struct dma_router(9)
• struct dma_chan(9)
• struct dma_chan_dev(9)
• enum dma_slave_buswidth(9)
• struct dma_slave_config(9)
• enum dma_residue_granularity(9)
• struct dma_slave_caps(9)
• dma_filter_fn(9)
• struct dma_async_tx_descriptor(9)
• struct dma_tx_state(9)
• struct dma_slave_map(9)
• struct dma_filter(9)
• struct dma_device(9)
• dmaengine_prep_peripheral_dma_vec(9)
• dmaengine_prep_config_sg_safe(9)
• dmaengine_prep_config_single_safe(9)
• dmaengine_prep_dma_memset(9)
• dmaengine_terminate_all(9)
• dmaengine_terminate_async(9)
• dmaengine_synchronize(9)
• dmaengine_terminate_sync(9)
• dma_async_issue_pending(9)
• dma_async_is_tx_complete(9)
• dma_async_is_complete(9)

mwah 💋 this cute little page ships from the source/version ./include/linux and is dated October 2026, still repping enum dmaengine_alignment(9) realness. periodt. 💅