X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=include%2Fxen%2Fdriver_util.h;fp=include%2Fxen%2Fdriver_util.h;h=4e70b93db5a46d19bbbe0e548a2ae86232ba9635;hb=1db395853d4f30d6120458bd279ede1f882a8525;hp=0000000000000000000000000000000000000000;hpb=34a75f0025b9cf803b6a88db032e6ad6950c9313;p=linux-2.6.git

diff --git a/include/xen/driver_util.h b/include/xen/driver_util.h
new file mode 100644
index 000000000..4e70b93db
--- /dev/null
+++ b/include/xen/driver_util.h
@@ -0,0 +1,16 @@
+
+#ifndef __ASM_XEN_DRIVER_UTIL_H__
+#define __ASM_XEN_DRIVER_UTIL_H__
+
+#include <linux/config.h>
+#include <linux/vmalloc.h>
+
+/* Allocate/destroy a 'vmalloc' VM area. */
+extern struct vm_struct *alloc_vm_area(unsigned long size);
+extern void free_vm_area(struct vm_struct *area);
+
+/* Lock an area so that PTEs are accessible in the current address space. */
+extern void lock_vm_area(struct vm_struct *area);
+extern void unlock_vm_area(struct vm_struct *area);
+
+#endif /* __ASM_XEN_DRIVER_UTIL_H__ */