IIO_DECLARE_...FFER_WITH_TS(9)

💅 IIO_DECLARE_DMA_BUFFER_WITH_TS(9) 💅

okay so bestie, welcome to this page from the Kernel API Manual, and the main character is IIO_DECLARE_DMA_BUFFER_WITH_TS — it's giving “declare a DMA-aligned buffer with timestamp.” The header shortens the name to IIO_DECLARE_...FFER_WITH_TS(9), iykyk. 🎀✨

✨ NAME ✨

IIO_DECLARE_DMA_BUFFER_WITH_TS — Declare a DMA-aligned buffer with timestamp. slay.

🌸 SYNOPSIS 🌸

IIO_DECLARE_DMA_BUFFER_WITH_TS (type , name , count );

🦋 ARGUMENTS 🦋

• type — the element type of the buffer, obvs.
• name — the identifier name of the buffer.
• count — the number of elements in the buffer.

🔥 DESCRIPTION 🔥

So it's literally the same as IIO_DECLARE_BUFFER_WITH_TS, but it uses __aligned(IIO_DMA_MINALIGN) to ensure that the buffer does not share cachelines with anything that comes before it in a struct. That's the whole point, no cap. ✨

🚨 warning bestie: this should not be used for stack-allocated buffers, because stack memory cannot generally be used for DMA. That's a hard no, not a vibe check. 💀

💜 SEE ALSO 💜

Kernel file ./include/linux/iio/iio.h, plus this whole friend group:

• struct iio_chan_spec_ext_info(9)
• struct iio_enum(9)
• IIO_ENUM(9)
• IIO_ENUM_AVAILABLE(9)
• struct iio_mount_matrix(9)
• IIO_MOUNT_MATRIX(9)
• struct iio_event_spec(9)
• IIO_SCAN_FORMAT_SIGNED_INT(9)
• IIO_SCAN_FORMAT_UNSIGNED_INT(9)
• IIO_SCAN_FORMAT_FLOAT(9)
• struct iio_scan_type(9)
• struct iio_chan_spec(9)
• iio_channel_has_info(9)
• iio_channel_has_available(9)
• struct iio_info(9)
• struct iio_buffer_setup_ops(9)
• struct iio_dev(9)
• iio_device_register(9)
• devm_iio_device_register(9)
• iio_device_claim_direct(9)
• iio_device_release_direct(9)
• iio_device_try_claim_buffer_mode(9)
• iio_device_release_buffer_mode(9)
• IIO_DEV_ACQUIRE_DIRECT_MODE(9)
• IIO_DEV_ACQUIRE_FAILED(9)
• IIO_DEV_GUARD_CURRENT_MODE(9)
• iio_device_put(9)
• dev_to_iio_dev(9)
• iio_device_get(9)
• iio_device_set_parent(9)
• iio_device_set_drvdata(9)
• iio_device_get_drvdata(9)
• IIO_DECLARE_BUFFER_WITH_TS(9)
• IIO_DECLARE_QUATERNION(9)
• iio_get_debugfs_dentry(9)
• iio_device_suspend_triggering(9)
• iio_device_resume_triggering(9)
• iio_get_current_scan_type(9)
• iio_get_masklength(9)
• iio_for_each_active_channel(9)
• IIO_DEGREE_TO_RAD(9)
• IIO_RAD_TO_DEGREE(9)
• IIO_G_TO_M_S_2(9)
• IIO_M_S_2_TO_G(9)

okay that's the tea! 🍓 This page lives at ./include/linux/iio, dated October 2026, and the manual header/footer calls it IIO_DECLARE_...FFER_WITH_TS(9). Bye bestie, go make that DMA buffer iconic. 💖✨