1 /* SPDX-License-Identifier: GPL-2.0 */
5 #define __EXPORTED_HEADERS__
6 #include <uapi/linux/types.h>
10 #define DECLARE_BITMAP(name,bits) \
11 unsigned long name[BITS_TO_LONGS(bits)]
13 typedef u32 __kernel_dev_t;
15 typedef __kernel_fd_set fd_set;
16 typedef __kernel_dev_t dev_t;
17 typedef __kernel_ino_t ino_t;
18 typedef __kernel_mode_t mode_t;
19 typedef unsigned short umode_t;
21 typedef __kernel_off_t off_t;
22 typedef __kernel_pid_t pid_t;
23 typedef __kernel_daddr_t daddr_t;
24 typedef __kernel_key_t key_t;
25 typedef __kernel_suseconds_t suseconds_t;
26 typedef __kernel_timer_t timer_t;
27 typedef __kernel_clockid_t clockid_t;
28 typedef __kernel_mqd_t mqd_t;
32 typedef __kernel_uid32_t uid_t;
33 typedef __kernel_gid32_t gid_t;
34 typedef __kernel_uid16_t uid16_t;
35 typedef __kernel_gid16_t gid16_t;
37 typedef unsigned long uintptr_t;
39 #ifdef CONFIG_HAVE_UID16
40 /* This is defined by include/asm-{arch}/posix_types.h */
41 typedef __kernel_old_uid_t old_uid_t;
42 typedef __kernel_old_gid_t old_gid_t;
43 #endif /* CONFIG_UID16 */
46 typedef __kernel_loff_t loff_t;
50 * The following typedefs are also protected by individual ifdefs for
55 typedef __kernel_size_t size_t;
60 typedef __kernel_ssize_t ssize_t;
65 typedef __kernel_ptrdiff_t ptrdiff_t;
70 typedef __kernel_clock_t clock_t;
75 typedef __kernel_caddr_t caddr_t;
79 typedef unsigned char u_char;
80 typedef unsigned short u_short;
81 typedef unsigned int u_int;
82 typedef unsigned long u_long;
85 typedef unsigned char unchar;
86 typedef unsigned short ushort;
87 typedef unsigned int uint;
88 typedef unsigned long ulong;
90 #ifndef __BIT_TYPES_DEFINED__
91 #define __BIT_TYPES_DEFINED__
95 typedef u16 u_int16_t;
97 typedef u32 u_int32_t;
100 #endif /* !(__BIT_TYPES_DEFINED__) */
103 typedef u16 uint16_t;
104 typedef u32 uint32_t;
106 #if defined(__GNUC__)
107 typedef u64 uint64_t;
108 typedef u64 u_int64_t;
112 /* this is a special 64bit data type that is 8-byte aligned */
113 #define aligned_u64 __aligned_u64
114 #define aligned_be64 __aligned_be64
115 #define aligned_le64 __aligned_le64
118 * The type used for indexing onto a disc or disc partition.
120 * Linux always considers sectors to be 512 bytes long independently
121 * of the devices real block size.
123 * blkcnt_t is the type of the inode's block count.
125 typedef u64 sector_t;
126 typedef u64 blkcnt_t;
129 * The type of an index into the pagecache.
131 #define pgoff_t unsigned long
134 * A dma_addr_t can hold any valid DMA address, i.e., any address returned
137 * If the DMA API only uses 32-bit addresses, dma_addr_t need only be 32
138 * bits wide. Bus addresses, e.g., PCI BARs, may be wider than 32 bits,
139 * but drivers do memory-mapped I/O to ioremapped kernel virtual addresses,
140 * so they don't care about the size of the actual bus addresses.
142 #ifdef CONFIG_ARCH_DMA_ADDR_T_64BIT
143 typedef u64 dma_addr_t;
145 typedef u32 dma_addr_t;
148 typedef unsigned int __bitwise gfp_t;
149 typedef unsigned int __bitwise slab_flags_t;
150 typedef unsigned int __bitwise fmode_t;
152 #ifdef CONFIG_PHYS_ADDR_T_64BIT
153 typedef u64 phys_addr_t;
155 typedef u32 phys_addr_t;
158 typedef phys_addr_t resource_size_t;
161 * This type is the placeholder for a hardware interrupt number. It has to be
162 * big enough to enclose whatever representation is used by a given platform.
164 typedef unsigned long irq_hw_number_t;
170 #define ATOMIC_INIT(i) { (i) }
179 struct list_head *next, *prev;
183 struct hlist_node *first;
187 struct hlist_node *next, **pprev;
191 __kernel_daddr_t f_tfree;
192 __kernel_ino_t f_tinode;
198 * struct callback_head - callback structure for use with RCU and task_work
199 * @next: next update requests in a list
200 * @func: actual update function to call after the grace period.
202 * The struct is aligned to size of pointer. On most architectures it happens
203 * naturally due ABI requirements, but some architectures (like CRIS) have
204 * weird ABI and we need to ask it explicitly.
206 * The alignment is required to guarantee that bit 0 of @next will be
207 * clear under normal conditions -- as long as we use call_rcu() or
208 * call_srcu() to queue the callback.
210 * This guarantee is important for few reasons:
211 * - future call_rcu_lazy() will make use of lower bits in the pointer;
212 * - the structure shares storage space in struct page with @compound_head,
213 * which encode PageTail() in bit 0. The guarantee is needed to avoid
214 * false-positive PageTail().
216 struct callback_head {
217 struct callback_head *next;
218 void (*func)(struct callback_head *head);
219 } __attribute__((aligned(sizeof(void *))));
220 #define rcu_head callback_head
222 typedef void (*rcu_callback_t)(struct rcu_head *head);
223 typedef void (*call_rcu_func_t)(struct rcu_head *head, rcu_callback_t func);
225 typedef void (*swap_func_t)(void *a, void *b, int size);
227 typedef int (*cmp_r_func_t)(const void *a, const void *b, const void *priv);
228 typedef int (*cmp_func_t)(const void *a, const void *b);
230 #endif /* __ASSEMBLY__ */
231 #endif /* _LINUX_TYPES_H */