1 #ifndef __TOOLS_LINUX_SLAB_H
2 #define __TOOLS_LINUX_SLAB_H
8 #include <linux/kernel.h>
9 #include <linux/log2.h>
10 #include <linux/overflow.h>
11 #include <linux/page.h>
12 #include <linux/shrinker.h>
13 #include <linux/types.h>
18 #define alloc_hooks(_do, ...) _do
20 #define ARCH_KMALLOC_MINALIGN 16
21 #define KMALLOC_MAX_SIZE SIZE_MAX
23 static inline void *kmalloc_noprof(size_t size, gfp_t flags)
28 for (i = 0; i < 10; i++) {
30 size_t alignment = min(rounddown_pow_of_two(size), (size_t)PAGE_SIZE);
31 alignment = max(sizeof(void *), alignment);
32 if (posix_memalign(&p, alignment, size))
39 if (flags & __GFP_ZERO)
44 run_shrinkers(flags, true);
49 #define kmalloc kmalloc_noprof
51 static inline void *krealloc(void *old, size_t size, gfp_t flags)
55 new = kmalloc(size, flags);
59 if (flags & __GFP_ZERO)
64 min(malloc_usable_size(old),
65 malloc_usable_size(new)));
72 static inline void *krealloc_array(void *p, size_t new_n, size_t new_size, gfp_t flags)
76 if (unlikely(check_mul_overflow(new_n, new_size, &bytes)))
79 return krealloc(p, bytes, flags);
82 #define kzalloc(size, flags) kmalloc(size, flags|__GFP_ZERO)
84 static inline void *kmalloc_array(size_t n, size_t size, gfp_t flags)
88 if (unlikely(check_mul_overflow(n, size, &bytes)))
90 return kmalloc(bytes, flags);
93 #define kvmalloc_array(n, size, flags) \
94 ((size) != 0 && (n) > SIZE_MAX / (size) \
95 ? NULL : kmalloc((n) * (size), flags))
97 #define kcalloc(n, size, flags) kmalloc_array(n, size, flags|__GFP_ZERO)
99 #define kfree(p) free(p)
100 #define kzfree(p) free(p)
102 #define kvmalloc(size, flags) kmalloc(size, flags)
103 #define kvzalloc(size, flags) kzalloc(size, flags)
104 #define kvfree(p) kfree(p)
106 static inline struct page *alloc_pages_noprof(gfp_t flags, unsigned int order)
108 size_t size = PAGE_SIZE << order;
112 for (i = 0; i < 10; i++) {
113 p = aligned_alloc(PAGE_SIZE, size);
116 if (flags & __GFP_ZERO)
121 run_shrinkers(flags, true);
126 #define alloc_pages alloc_pages_noprof
128 #define alloc_page(gfp) alloc_pages(gfp, 0)
130 #define _get_free_pages(gfp, order) ((unsigned long) alloc_pages(gfp, order))
131 #define __get_free_pages(gfp, order) ((unsigned long) alloc_pages(gfp, order))
132 #define get_free_pages_noprof(gfp, order) \
133 ((unsigned long) alloc_pages(gfp, order))
134 #define __get_free_page(gfp) __get_free_pages(gfp, 0)
136 #define __free_pages(page, order) \
142 #define free_pages(addr, order) \
145 free((void *) (addr)); \
148 #define __free_page(page) __free_pages((page), 0)
149 #define free_page(addr) free_pages((addr), 0)
151 #define VM_IOREMAP 0x00000001 /* ioremap() and friends */
152 #define VM_ALLOC 0x00000002 /* vmalloc() */
153 #define VM_MAP 0x00000004 /* vmap()ed pages */
154 #define VM_USERMAP 0x00000008 /* suitable for remap_vmalloc_range */
155 #define VM_UNINITIALIZED 0x00000020 /* vm_struct is not fully initialized */
156 #define VM_NO_GUARD 0x00000040 /* don't add guard page */
157 #define VM_KASAN 0x00000080 /* has allocated kasan shadow memory */
159 static inline void vunmap(const void *addr) {}
161 static inline void *vmap(struct page **pages, unsigned int count,
162 unsigned long flags, unsigned prot)
167 #define is_vmalloc_addr(page) 0
169 #define vmalloc_to_page(addr) ((struct page *) (addr))
171 static inline void *kmemdup(const void *src, size_t len, gfp_t gfp)
175 p = kmalloc(len, gfp);
185 static inline void *kmem_cache_alloc(struct kmem_cache *c, gfp_t gfp)
187 return kmalloc(c->obj_size, gfp);
190 static inline void *kmem_cache_zalloc(struct kmem_cache *c, gfp_t gfp)
192 return kzalloc(c->obj_size, gfp);
195 static inline void kmem_cache_free(struct kmem_cache *c, void *p)
200 static inline void kmem_cache_destroy(struct kmem_cache *p)
205 static inline struct kmem_cache *kmem_cache_create(size_t obj_size)
207 struct kmem_cache *p = kmalloc(sizeof(*p), GFP_KERNEL);
211 p->obj_size = obj_size;
215 #define KMEM_CACHE(_struct, _flags) kmem_cache_create(sizeof(struct _struct))
217 #define PAGE_KERNEL 0
218 #define PAGE_KERNEL_EXEC 1
220 #define vfree(p) free(p)
222 static inline void *__vmalloc_noprof(unsigned long size, gfp_t flags)
227 size = round_up(size, PAGE_SIZE);
229 for (i = 0; i < 10; i++) {
230 p = aligned_alloc(PAGE_SIZE, size);
233 if (flags & __GFP_ZERO)
238 run_shrinkers(flags, true);
243 #define __vmalloc __vmalloc_noprof
245 static inline void *vmalloc_exec(unsigned long size, gfp_t gfp_mask)
249 p = __vmalloc(size, gfp_mask);
253 if (mprotect(p, size, PROT_READ|PROT_WRITE|PROT_EXEC)) {
261 static inline void *vmalloc(unsigned long size)
263 return __vmalloc(size, GFP_KERNEL);
266 static inline void *vzalloc(unsigned long size)
268 return __vmalloc(size, GFP_KERNEL|__GFP_ZERO);
271 #endif /* __TOOLS_LINUX_SLAB_H */