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kernel: modularize dma shared buffer code to eliminate kernel bloat

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Signed-off-by: Felix Fietkau <nbd@openwrt.org>

SVN-Revision: 48371
This commit is contained in:
Felix Fietkau 2016-01-19 21:09:11 +00:00
parent 000295f8ba
commit 20ba5a01cf
6 changed files with 151 additions and 0 deletions
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10
package/kernel/linux/modules/other.mk
View file

@ -130,6 +130,16 @@ endef
$(eval $(call KernelPackage,bluetooth-hci-h4p))
define KernelPackage/dma-buf
TITLE:=DMA shared buffer support
HIDDEN:=1
KCONFIG:=CONFIG_DMA_SHARED_BUFFER
FILES:=$(LINUX_DIR)/drivers/dma-buf/dma-shared-buffer.ko
AUTOLOAD:=$(call AutoLoad,20,dma-shared-buffer)
endef
$(eval $(call KernelPackage,dma-buf))
define KernelPackage/eeprom-93cx6
SUBMENU:=$(OTHER_MENU)
TITLE:=EEPROM 93CX6 support

1
package/kernel/linux/modules/video.mk
View file

@ -121,6 +121,7 @@ endef
define KernelPackage/video-videobuf2
TITLE:=videobuf2 lib
DEPENDS:=+kmod-dma-buf
KCONFIG:= \
CONFIG_VIDEOBUF2_CORE \
CONFIG_VIDEOBUF2_MEMOPS \

35
target/linux/generic/patches-3.18/904-debloat_dma_buf.patch Normal file
View file

@ -0,0 +1,35 @@
--- a/drivers/base/Kconfig
+++ b/drivers/base/Kconfig
@@ -229,7 +229,7 @@ config SOC_BUS
source "drivers/base/regmap/Kconfig"
config DMA_SHARED_BUFFER
- bool
+ tristate
default n
select ANON_INODES
help
--- 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_DMA_SHARED_BUFFER) := dma-shared-buffer.o
+dma-shared-buffer-objs := dma-buf.o fence.o reservation.o seqno-fence.o
--- a/drivers/dma-buf/dma-buf.c
+++ b/drivers/dma-buf/dma-buf.c
@@ -904,4 +904,4 @@ static void __exit dma_buf_deinit(void)
{
dma_buf_uninit_debugfs();
}
-__exitcall(dma_buf_deinit);
+module_exit(dma_buf_deinit);
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -1801,6 +1801,7 @@ int wake_up_state(struct task_struct *p,
{
return try_to_wake_up(p, state, 0);
}
+EXPORT_SYMBOL_GPL(wake_up_state);
/*
* This function clears the sched_dl_entity static params.

35
target/linux/generic/patches-4.1/904-debloat_dma_buf.patch Normal file
View file

@ -0,0 +1,35 @@
--- a/drivers/base/Kconfig
+++ b/drivers/base/Kconfig
@@ -229,7 +229,7 @@ config SOC_BUS
source "drivers/base/regmap/Kconfig"
config DMA_SHARED_BUFFER
- bool
+ tristate
default n
select ANON_INODES
help
--- 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_DMA_SHARED_BUFFER) := dma-shared-buffer.o
+dma-shared-buffer-objs := dma-buf.o fence.o reservation.o seqno-fence.o
--- a/drivers/dma-buf/dma-buf.c
+++ b/drivers/dma-buf/dma-buf.c
@@ -901,4 +901,4 @@ static void __exit dma_buf_deinit(void)
{
dma_buf_uninit_debugfs();
}
-__exitcall(dma_buf_deinit);
+module_exit(dma_buf_deinit);
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -1768,6 +1768,7 @@ int wake_up_state(struct task_struct *p,
{
return try_to_wake_up(p, state, 0);
}
+EXPORT_SYMBOL_GPL(wake_up_state);
/*
* This function clears the sched_dl_entity static params.

35
target/linux/generic/patches-4.3/904-debloat_dma_buf.patch Normal file
View file

@ -0,0 +1,35 @@
--- a/drivers/base/Kconfig
+++ b/drivers/base/Kconfig
@@ -229,7 +229,7 @@ config SOC_BUS
source "drivers/base/regmap/Kconfig"
config DMA_SHARED_BUFFER
- bool
+ tristate
default n
select ANON_INODES
help
--- 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_DMA_SHARED_BUFFER) := dma-shared-buffer.o
+dma-shared-buffer-objs := dma-buf.o fence.o reservation.o seqno-fence.o
--- a/drivers/dma-buf/dma-buf.c
+++ b/drivers/dma-buf/dma-buf.c
@@ -914,4 +914,4 @@ static void __exit dma_buf_deinit(void)
{
dma_buf_uninit_debugfs();
}
-__exitcall(dma_buf_deinit);
+module_exit(dma_buf_deinit);
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -2040,6 +2040,7 @@ int wake_up_state(struct task_struct *p,
{
return try_to_wake_up(p, state, 0);
}
+EXPORT_SYMBOL_GPL(wake_up_state);
/*
* This function clears the sched_dl_entity static params.

35
target/linux/generic/patches-4.4/904-debloat_dma_buf.patch Normal file
View file

@ -0,0 +1,35 @@
--- a/drivers/base/Kconfig
+++ b/drivers/base/Kconfig
@@ -229,7 +229,7 @@ config SOC_BUS
source "drivers/base/regmap/Kconfig"
config DMA_SHARED_BUFFER
- bool
+ tristate
default n
select ANON_INODES
help
--- 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_DMA_SHARED_BUFFER) := dma-shared-buffer.o
+dma-shared-buffer-objs := dma-buf.o fence.o reservation.o seqno-fence.o
--- a/drivers/dma-buf/dma-buf.c
+++ b/drivers/dma-buf/dma-buf.c
@@ -914,4 +914,4 @@ static void __exit dma_buf_deinit(void)
{
dma_buf_uninit_debugfs();
}
-__exitcall(dma_buf_deinit);
+module_exit(dma_buf_deinit);
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -2072,6 +2072,7 @@ int wake_up_state(struct task_struct *p,
{
return try_to_wake_up(p, state, 0);
}
+EXPORT_SYMBOL_GPL(wake_up_state);
/*
* This function clears the sched_dl_entity static params.