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add memobj's default action

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NAKAMURA Gou
2014-07-03 12:11:02 +09:00
parent 9efb5e4fc5
commit 9057268f0e
1 changed files with 19 additions and 5 deletions
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24
kernel/include/memobj.h
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@ -16,6 +16,7 @@
#include <ihk/types.h> #include <ihk/types.h>
#include <ihk/atomic.h> #include <ihk/atomic.h>
#include <ihk/lock.h> #include <ihk/lock.h>
#include <errno.h>
#include <list.h> #include <list.h>
enum { enum {
@ -46,29 +47,42 @@ struct memobj_ops {
static inline void memobj_release(struct memobj *obj) static inline void memobj_release(struct memobj *obj)
{ {
(*obj->ops->release)(obj); if (obj->ops->release) {
(*obj->ops->release)(obj);
}
} }
static inline void memobj_ref(struct memobj *obj) static inline void memobj_ref(struct memobj *obj)
{ {
(*obj->ops->ref)(obj); if (obj->ops->ref) {
(*obj->ops->ref)(obj);
}
} }
static inline int memobj_get_page(struct memobj *obj, off_t off, static inline int memobj_get_page(struct memobj *obj, off_t off,
int p2align, uintptr_t *physp) int p2align, uintptr_t *physp)
{ {
return (*obj->ops->get_page)(obj, off, p2align, physp); if (obj->ops->get_page) {
return (*obj->ops->get_page)(obj, off, p2align, physp);
}
return -ENXIO;
} }
static inline uintptr_t memobj_copy_page(struct memobj *obj, static inline uintptr_t memobj_copy_page(struct memobj *obj,
uintptr_t orgphys, int p2align) uintptr_t orgphys, int p2align)
{ {
return (*obj->ops->copy_page)(obj, orgphys, p2align); if (obj->ops->copy_page) {
return (*obj->ops->copy_page)(obj, orgphys, p2align);
}
return -ENXIO;
} }
static inline int memobj_flush_page(struct memobj *obj, uintptr_t phys, size_t pgsize) static inline int memobj_flush_page(struct memobj *obj, uintptr_t phys, size_t pgsize)
{ {
return (*obj->ops->flush_page)(obj, phys, pgsize); if (obj->ops->flush_page) {
return (*obj->ops->flush_page)(obj, phys, pgsize);
}
return 0;
} }
static inline void memobj_lock(struct memobj *obj) static inline void memobj_lock(struct memobj *obj)