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xen: separate out frontend xenbus

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Impact: refactor

Make a distinct frontend xenbus, in preparation for adding a backend xenbus.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
[corresponds to 2fd433a4188f in git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen.git
 with adjustments to reflect changes in the code which is moved]
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
This commit is contained in:
Ian Campbell
2009-02-09 12:05:51 -08:00
committed by Konrad Rzeszutek Wilk
parent cf7d7e5a19
commit 2de06cc1f1
6 changed files with 367 additions and 305 deletions
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30
drivers/xen/xenbus/xenbus_probe.h
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@@ -36,26 +36,13 @@
#define XEN_BUS_ID_SIZE 20
#ifdef CONFIG_XEN_BACKEND
extern void xenbus_backend_suspend(int (*fn)(struct device *, void *));
extern void xenbus_backend_resume(int (*fn)(struct device *, void *));
extern void xenbus_backend_probe_and_watch(void);
extern int xenbus_backend_bus_register(void);
extern void xenbus_backend_bus_unregister(void);
#else
static inline void xenbus_backend_suspend(int (*fn)(struct device *, void *)) {}
static inline void xenbus_backend_resume(int (*fn)(struct device *, void *)) {}
static inline void xenbus_backend_probe_and_watch(void) {}
static inline int xenbus_backend_bus_register(void) { return 0; }
static inline void xenbus_backend_bus_unregister(void) {}
#endif
struct xen_bus_type
{
char *root;
unsigned int levels;
int (*get_bus_id)(char bus_id[XEN_BUS_ID_SIZE], const char *nodename);
int (*probe)(const char *type, const char *dir);
int (*probe)(struct xen_bus_type *bus, const char *type, const char *dir);
void (*otherend_changed)(struct xenbus_watch *watch, const char **vec, unsigned int len);
struct bus_type bus;
};
@@ -73,4 +60,17 @@ extern int xenbus_probe_devices(struct xen_bus_type *bus);
extern void xenbus_dev_changed(const char *node, struct xen_bus_type *bus);
extern int xenbus_uevent(struct device *_dev, struct kobj_uevent_env *env);
extern void xenbus_dev_shutdown(struct device *_dev);
extern int xenbus_dev_suspend(struct device *dev, pm_message_t state);
extern int xenbus_dev_resume(struct device *dev);
extern void xenbus_otherend_changed(struct xenbus_watch *watch,
const char **vec, unsigned int len,
int ignore_on_shutdown);
extern int xenbus_read_otherend_details(struct xenbus_device *xendev,
char *id_node, char *path_node);
#endif