dma-buf/sw_sync: build sw-sync as module for gki

Fixes: da8f900b52 ("dma-buf/sw_sync: sw_sync register as misc devices")
Signed-off-by: Sandy Huang <hjc@rock-chips.com>
Change-Id: If012d5f85b261690cb172b7b61b98212406f6a3d

drivers/dma-buf/Kconfig

@@ -18,7 +18,7 @@ config SYNC_FILE
 	  Documentation/driver-api/sync_file.rst.
 
 config SW_SYNC
-	bool "Sync File Validation Framework"
+	tristate "Sync File Validation Framework"
 	default n
 	depends on SYNC_FILE
 	help
@@ -29,6 +29,13 @@ config SW_SYNC
 	  WARNING: improper use of this can result in deadlocking kernel
 	  drivers from userspace. Intended for test and debug only.
 
+config SW_SYNC_DEBUG
+	bool "SW Sync Debug"
+	depends on DEBUG_FS && SW_SYNC && NO_GKI
+	default SW_SYNC
+	help
+	  To get current fence point and timeline status.
+
 config UDMABUF
 	bool "userspace dmabuf misc driver"
 	default n

drivers/dma-buf/Makefile

@@ -4,7 +4,8 @@ obj-y := dma-buf.o dma-fence.o dma-fence-array.o dma-fence-chain.o \
 obj-$(CONFIG_DMABUF_HEAPS)	+= dma-heap.o
 obj-$(CONFIG_DMABUF_HEAPS)	+= heaps/
 obj-$(CONFIG_SYNC_FILE)		+= sync_file.o
-obj-$(CONFIG_SW_SYNC)		+= sw_sync.o sync_debug.o
+obj-$(CONFIG_SW_SYNC)		+= sw_sync.o
+obj-$(CONFIG_SW_SYNC_DEBUG)	+= sync_debug.o
 obj-$(CONFIG_UDMABUF)		+= udmabuf.o
 obj-$(CONFIG_DMABUF_SYSFS_STATS) += dma-buf-sysfs-stats.o
 

drivers/dma-buf/sync_debug.c

@@ -8,7 +8,6 @@
 #include <linux/debugfs.h>
 #include "sync_debug.h"
 
-#ifdef CONFIG_DEBUG_FS
 static struct dentry *dbgfs;
 
 static LIST_HEAD(sync_timeline_list_head);
@@ -189,4 +188,3 @@ static __init int sync_debugfs_init(void)
 	return 0;
 }
 late_initcall(sync_debugfs_init);
-#endif

drivers/dma-buf/sync_debug.h

@@ -62,9 +62,9 @@ struct sync_pt {
 	struct rb_node node;
 };
 
-#ifdef CONFIG_DEBUG_FS
 extern const struct file_operations sw_sync_debugfs_fops;
 
+#ifdef CONFIG_SW_SYNC_DEBUG
 void sync_timeline_debug_add(struct sync_timeline *obj);
 void sync_timeline_debug_remove(struct sync_timeline *obj);
 void sync_file_debug_add(struct sync_file *fence);