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dma-buf/sync_file: de-stage sync_file

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sync_file is useful to connect one or more fences to the file. The file is
used by userspace to track fences between drivers that share DMA bufs.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Gustavo Padovan 2016-04-28 10:46:58 -03:00 committed by Greg Kroah-Hartman
parent 460bfc41fd
commit 62304fb1fc
6 changed files with 16 additions and 1 deletions
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2
drivers/Kconfig
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@ -114,6 +114,8 @@ source "drivers/rtc/Kconfig"
source "drivers/dma/Kconfig"
source "drivers/dma-buf/Kconfig"
source "drivers/dca/Kconfig"
source "drivers/auxdisplay/Kconfig"

11
drivers/dma-buf/Kconfig Normal file
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@ -0,0 +1,11 @@
menu "DMABUF options"
config SYNC_FILE
bool "sync_file support for fences"
default n
select ANON_INODES
select DMA_SHARED_BUFFER
---help---
This option enables the fence framework synchronization to export
sync_files to userspace that can represent one or more fences.
endmenu

1
drivers/dma-buf/Makefile
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@ -1 +1,2 @@
obj-y := dma-buf.o fence.o reservation.o seqno-fence.o
obj-$(CONFIG_SYNC_FILE) += sync_file.o

0
drivers/staging/android/sync_file.c → drivers/dma-buf/sync_file.c
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1
drivers/staging/android/Kconfig
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@ -38,6 +38,7 @@ config SW_SYNC
bool "Software synchronization objects"
default n
depends on SYNC
depends on SYNC_FILE
---help---
A sync object driver that uses a 32bit counter to coordinate
synchronization. Useful when there is no hardware primitive backing

2
drivers/staging/android/Makefile
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@ -4,5 +4,5 @@ obj-y += ion/
obj-$(CONFIG_ASHMEM) += ashmem.o
obj-$(CONFIG_ANDROID_LOW_MEMORY_KILLER) += lowmemorykiller.o
obj-$(CONFIG_SYNC) += sync_file.o sync.o sync_debug.o
obj-$(CONFIG_SYNC) += sync.o sync_debug.o
obj-$(CONFIG_SW_SYNC) += sw_sync.o