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CONFIG_DMABUF_SYSFS_STATS: DMA-BUF sysfs statistics (DEPRECATED)

General informations

The Linux kernel configuration item CONFIG_DMABUF_SYSFS_STATS has multiple definitions:

DMA-BUF sysfs statistics (DEPRECATED) found in drivers/dma-buf/Kconfig

The configuration item CONFIG_DMABUF_SYSFS_STATS:

Help text

Choose this option to enable DMA-BUF sysfs statistics in location /sys/kernel/dmabuf/buffers.

/sys/kernel/dmabuf/buffers/<inode_number> will contain statistics for the DMA-BUF with the unique inode number <inode_number>.

This option is deprecated and should sooner or later be removed. Android is the only user of this and it turned out that this resulted in quite some performance problems.

DMA-BUF sysfs statistics found in drivers/dma-buf/Kconfig

The configuration item CONFIG_DMABUF_SYSFS_STATS:

Help text

Choose this option to enable DMA-BUF sysfs statistics in location /sys/kernel/dmabuf/buffers.

/sys/kernel/dmabuf/buffers/<inode_number> will contain statistics for the DMA-BUF with the unique inode number <inode_number>.

Hardware

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