[deliverable/linux.git] / drivers / dma-buf / Kconfig

menu "DMABUF options"

config SYNC_FILE
	bool "Explicit Synchronization Framework"
	default n
	select ANON_INODES
	select DMA_SHARED_BUFFER
	---help---
	  The Sync File Framework adds explicit syncronization via
	  userspace. It enables send/receive 'struct fence' objects to/from
	  userspace via Sync File fds for synchronization between drivers via
	  userspace components. It has been ported from Android.

	  The first and main user for this is graphics in which a fence is
	  associated with a buffer. When a job is submitted to the GPU a fence
	  is attached to the buffer and is transferred via userspace, using Sync
	  Files fds, to the DRM driver for example. More details at
	  Documentation/sync_file.txt.

config SW_SYNC
	bool "Sync File Validation Framework"
	default n
	depends on SYNC_FILE
	depends on DEBUG_FS
	---help---
	  A sync object driver that uses a 32bit counter to coordinate
	  synchronization.  Useful when there is no hardware primitive backing
	  the synchronization.

	  WARNING: improper use of this can result in deadlocking kernel
	  drivers from userspace. Intended for test and debug only.

endmenu
Commit	Line	Data
62304fb1 GP	1	menu "DMABUF options"
	2
	3	config SYNC_FILE
31954660	4	bool "Explicit Synchronization Framework"
62304fb1 GP	5	default n
	6	select ANON_INODES
	7	select DMA_SHARED_BUFFER
	8	---help---
31954660 GP	9	The Sync File Framework adds explicit syncronization via
	10	userspace. It enables send/receive 'struct fence' objects to/from
	11	userspace via Sync File fds for synchronization between drivers via
	12	userspace components. It has been ported from Android.
	13
	14	The first and main user for this is graphics in which a fence is
	15	associated with a buffer. When a job is submitted to the GPU a fence
	16	is attached to the buffer and is transferred via userspace, using Sync
	17	Files fds, to the DRM driver for example. More details at
	18	Documentation/sync_file.txt.
	19
35538d78 GP	20	config SW_SYNC
	21	bool "Sync File Validation Framework"
	22	default n
	23	depends on SYNC_FILE
	24	depends on DEBUG_FS
	25	---help---
	26	A sync object driver that uses a 32bit counter to coordinate
	27	synchronization. Useful when there is no hardware primitive backing
	28	the synchronization.
	29
	30	WARNING: improper use of this can result in deadlocking kernel
	31	drivers from userspace. Intended for test and debug only.
	32
62304fb1	33	endmenu