disable FB

hc

2024-01-04 1543e317f1da31b75942316931e8f491a8920811

 kernel/include/xen/xenbus.h
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@@ -42,10 +42,12 @@
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 #include <linux/completion.h>
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 #include <linux/init.h>
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 #include <linux/slab.h>
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+#include <linux/semaphore.h>
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 #include <xen/interface/xen.h>
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 #include <xen/interface/grant_table.h>
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 #include <xen/interface/io/xenbus.h>
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 #include <xen/interface/io/xs_wire.h>
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+#include <xen/interface/event_channel.h>
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 #define XENBUS_MAX_RING_GRANT_ORDER 4
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 #define XENBUS_MAX_RING_GRANTS      (1U << XENBUS_MAX_RING_GRANT_ORDER)
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@@ -85,6 +87,7 @@
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 	enum xenbus_state state;
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 	struct completion down;
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 	struct work_struct work;
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+	struct semaphore reclaim_sem;
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 };
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 static inline struct xenbus_device *to_xenbus_device(struct device *dev)
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@@ -102,6 +105,7 @@
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 struct xenbus_driver {
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 	const char *name;       /* defaults to ids[0].devicetype */
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 	const struct xenbus_device_id *ids;
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+	bool allow_rebind; /* avoid setting xenstore closed during remove */
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 	int (*probe)(struct xenbus_device *dev,
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 		     const struct xenbus_device_id *id);
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 	void (*otherend_changed)(struct xenbus_device *dev,
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@@ -113,6 +117,7 @@
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 	struct device_driver driver;
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 	int (*read_otherend_details)(struct xenbus_device *dev);
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 	int (*is_ready)(struct xenbus_device *dev);
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+	void (*reclaim_memory)(struct xenbus_device *dev);
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 };
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 static inline struct xenbus_driver *to_xenbus_driver(struct device_driver *drv)
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@@ -216,18 +221,11 @@
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 		      unsigned int nr_pages, grant_ref_t *grefs);
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 int xenbus_map_ring_valloc(struct xenbus_device *dev, grant_ref_t *gnt_refs,
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 			   unsigned int nr_grefs, void **vaddr);
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-int xenbus_map_ring(struct xenbus_device *dev,
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-		    grant_ref_t *gnt_refs, unsigned int nr_grefs,
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-		    grant_handle_t *handles, unsigned long *vaddrs,
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-		    bool *leaked);
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 int xenbus_unmap_ring_vfree(struct xenbus_device *dev, void *vaddr);
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-int xenbus_unmap_ring(struct xenbus_device *dev,
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-		      grant_handle_t *handles, unsigned int nr_handles,
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-		      unsigned long *vaddrs);
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-int xenbus_alloc_evtchn(struct xenbus_device *dev, int *port);
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-int xenbus_free_evtchn(struct xenbus_device *dev, int port);
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+int xenbus_alloc_evtchn(struct xenbus_device *dev, evtchn_port_t *port);
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+int xenbus_free_evtchn(struct xenbus_device *dev, evtchn_port_t port);
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 enum xenbus_state xenbus_read_driver_state(const char *path);
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