From: Gustavo Padovan <gustavo.padovan@xxxxxxxxxxxxxxx>
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@xxxxxxxxxxxxxxx>
---
drivers/Kconfig | 2 ++
drivers/dma-buf/Kconfig | 11 +++++++++++
drivers/dma-buf/Makefile | 1 +
drivers/{staging/android => dma-buf}/sync_file.c | 0
drivers/staging/android/Kconfig | 1 +
drivers/staging/android/Makefile | 2 +-
6 files changed, 16 insertions(+), 1 deletion(-)
create mode 100644 drivers/dma-buf/Kconfig
rename drivers/{staging/android => dma-buf}/sync_file.c (100%)
diff --git a/drivers/Kconfig b/drivers/Kconfig
index d2ac339..430f761 100644
--- a/drivers/Kconfig
+++ b/drivers/Kconfig
@@ -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"
diff --git a/drivers/dma-buf/Kconfig b/drivers/dma-buf/Kconfig
new file mode 100644
index 0000000..9824bc4
--- /dev/null
+++ b/drivers/dma-buf/Kconfig
@@ -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
diff --git a/drivers/dma-buf/Makefile b/drivers/dma-buf/Makefile
index 57a675f..4a424ec 100644
--- a/drivers/dma-buf/Makefile
+++ b/drivers/dma-buf/Makefile
@@ -1 +1,2 @@
obj-y := dma-buf.o fence.o reservation.o seqno-fence.o
+obj-$(CONFIG_SYNC_FILE) += sync_file.o
diff --git a/drivers/staging/android/sync_file.c b/drivers/dma-buf/sync_file.c
similarity index 100%
rename from drivers/staging/android/sync_file.c
rename to drivers/dma-buf/sync_file.c
diff --git a/drivers/staging/android/Kconfig b/drivers/staging/android/Kconfig
index 4244821..7a3a77e 100644
--- a/drivers/staging/android/Kconfig
+++ b/drivers/staging/android/Kconfig
@@ -38,6 +38,7 @@ config SW_SYNC
bool "Software synchronization objects"
default n
depends on SYNC
+ depends on SYNC_FILE
---help---
A sync object driver that uses a 32bit counter to coordinate
synchronization. Useful when there is no hardware primitive backing
diff --git a/drivers/staging/android/Makefile b/drivers/staging/android/Makefile
index ebc2df1..980d6dc 100644
--- a/drivers/staging/android/Makefile
+++ b/drivers/staging/android/Makefile
@@ -4,5 +4,5 @@ obj-y += ion/
obj-$(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
--
2.5.5
_______________________________________________
devel mailing list
devel@xxxxxxxxxxxxxxxxxxxxxx
http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
