1 /****************************************************************************** 2 * tmem.h 3 * 4 * Transcendent memory 5 * 6 * Copyright (c) 2008, Dan Magenheimer, Oracle Corp. 7 */ 8 9 #ifndef __XEN_TMEM_H__ 10 #define __XEN_TMEM_H__ 11 12 struct xen_sysctl_tmem_op; 13 14 #ifdef CONFIG_TMEM 15 extern int tmem_control(struct xen_sysctl_tmem_op *op); 16 extern void tmem_destroy(void *); 17 extern void *tmem_relinquish_pages(unsigned int, unsigned int); 18 extern unsigned long tmem_freeable_pages(void); 19 #else 20 static inline int tmem_control(struct xen_sysctl_tmem_op * op)21tmem_control(struct xen_sysctl_tmem_op *op) 22 { 23 return -ENOSYS; 24 } 25 26 static inline void tmem_destroy(void * p)27tmem_destroy(void *p) 28 { 29 return; 30 } 31 32 static inline void * tmem_relinquish_pages(unsigned int x,unsigned int y)33tmem_relinquish_pages(unsigned int x, unsigned int y) 34 { 35 return NULL; 36 } 37 38 static inline unsigned long tmem_freeable_pages(void)39tmem_freeable_pages(void) 40 { 41 return 0; 42 } 43 #endif /* CONFIG_TMEM */ 44 45 #endif /* __XEN_TMEM_H__ */ 46