ENUM SUM_CHECK_BITS(9)

💅 enum sum_check_bits(9)

okay so bestie, welcome to the Kernel API Manual — yes we're reading kernel headers for fun now, this is who we are 💖. Today's main character is enum sum_check_bits, and honestly? It's giving humble-but-essential.

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✨ NAME ✨

enum sum_check_bits — literally just the bit position of pq_check_flags. That's it. That's the whole gig. 🎀

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🦋 SYNOPSIS 🦋

enum sum_check_bits {
    SUM_CHECK_P ,
    SUM_CHECK_Q

};

no cap, that's the entire enum. two members. short and iconic 👑

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🌸 Constants 🌸

So the original doc is out here being mysterious and giving us absolutely nothing, so I'm just gonna tell you exactly what it says, no more no less:

• SUM_CHECK_P — undescribed 😭 (yes really, the docs said "undescribed" and dipped)
• SUM_CHECK_Q — undescribed 😭 (same energy, same silence)

fr fr if you were hoping for deep lore on these two, the manual is not gonna feed you. It's giving mystery on purpose 🙈

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🔥 SEE ALSO 🔥

okay this list is LONG, like a group chat with the whole friend group added, so buckle up bestie 💀. All of these are (9) kernel API pages, and yes, we're listing every single one because we don't do skipping here ✨

• Kernel file ./include/linux/dmaengine.h — the home turf 🏠
• 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_flags(9) — the bestie of our bestie 💖
• 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)
• enum dmaengine_alignment(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)

like, that's the whole dmaengine friend group right there 🌈 and they all said "add me to the list" 🫶

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that's the page bestie! source lives in ./include/linux, and this cute little drop is dated October 2026 — enum sum_check_bits(9), slay, periodt 💅✨