1 /* Public domain. */ 2 3 #ifndef _LINUX_GFP_H 4 #define _LINUX_GFP_H 5 6 #include <sys/types.h> 7 #include <sys/malloc.h> 8 #include <uvm/uvm_extern.h> 9 10 #define __GFP_ZERO M_ZERO 11 #define __GFP_DMA32 0x00010000 12 #define __GFP_NOWARN 0 13 #define __GFP_NORETRY 0 14 #define __GFP_RETRY_MAYFAIL 0 15 #define __GFP_MOVABLE 0 16 #define __GFP_COMP 0 17 #define __GFP_KSWAPD_RECLAIM 0 18 #define __GFP_HIGHMEM 0 19 #define __GFP_RECLAIMABLE 0 20 21 #define GFP_ATOMIC M_NOWAIT 22 #define GFP_NOWAIT M_NOWAIT 23 #define GFP_KERNEL (M_WAITOK | M_CANFAIL) 24 #define GFP_USER (M_WAITOK | M_CANFAIL) 25 #define GFP_TEMPORARY (M_WAITOK | M_CANFAIL) 26 #define GFP_HIGHUSER 0 27 #define GFP_DMA32 __GFP_DMA32 28 #define GFP_TRANSHUGE_LIGHT 0 29 30 static inline bool 31 gfpflags_allow_blocking(const unsigned int flags) 32 { 33 return (flags & M_WAITOK) != 0; 34 } 35 36 struct vm_page *alloc_pages(unsigned int, unsigned int); 37 void __free_pages(struct vm_page *, unsigned int); 38 39 static inline struct vm_page * 40 alloc_page(unsigned int gfp_mask) 41 { 42 return alloc_pages(gfp_mask, 0); 43 } 44 45 static inline void 46 __free_page(struct vm_page *page) 47 { 48 return __free_pages(page, 0); 49 } 50 51 static inline unsigned long 52 __get_free_page(unsigned int gfp_mask) 53 { 54 void *addr = km_alloc(PAGE_SIZE, &kv_page, &kp_dirty, &kd_nowait); 55 return (unsigned long)addr; 56 } 57 58 static inline void 59 free_page(unsigned long addr) 60 { 61 km_free((void *)addr, PAGE_SIZE, &kv_page, &kp_dirty); 62 } 63 64 #endif 65