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1 #ifndef FIO_OS_DRAGONFLY_H
2 #define FIO_OS_DRAGONFLY_H
3 
4 #define	FIO_OS	os_dragonfly
5 
6 #include <errno.h>
7 #include <unistd.h>
8 #include <sys/param.h>
9 #include <sys/sysctl.h>
10 #include <sys/statvfs.h>
11 #include <sys/diskslice.h>
12 #include <sys/ioctl_compat.h>
13 #include <sys/usched.h>
14 #include <sys/resource.h>
15 
16 #include "../file.h"
17 
18 #define FIO_HAVE_ODIRECT
19 #define FIO_USE_GENERIC_RAND
20 #define FIO_USE_GENERIC_INIT_RANDOM_STATE
21 #define FIO_HAVE_FS_STAT
22 #define FIO_HAVE_TRIM
23 #define FIO_HAVE_CHARDEV_SIZE
24 #define FIO_HAVE_GETTID
25 #define FIO_HAVE_CPU_AFFINITY
26 #define FIO_HAVE_IOPRIO
27 #define FIO_HAVE_SHM_ATTACH_REMOVED
28 
29 #define OS_MAP_ANON		MAP_ANON
30 
31 #ifndef PTHREAD_STACK_MIN
32 #define PTHREAD_STACK_MIN 4096
33 #endif
34 
35 #define fio_swap16(x)	bswap16(x)
36 #define fio_swap32(x)	bswap32(x)
37 #define fio_swap64(x)	bswap64(x)
38 
39 /* This is supposed to equal (sizeof(cpumask_t)*8) */
40 #define FIO_MAX_CPUS	SMP_MAXCPU
41 
42 typedef off_t off64_t;
43 typedef cpumask_t os_cpu_mask_t;
44 
45 /*
46  * These macros are copied from sys/cpu/x86_64/include/types.h.
47  * It's okay to copy from arch dependent header because x86_64 is the only
48  * supported arch, and no other arch is going to be supported any time soon.
49  *
50  * These are supposed to be able to be included from userspace by defining
51  * _KERNEL_STRUCTURES, however this scheme is badly broken that enabling it
52  * causes compile-time conflicts with other headers. Although the current
53  * upstream code no longer requires _KERNEL_STRUCTURES, they should be kept
54  * here for compatibility with older versions.
55  */
56 #ifndef CPUMASK_SIMPLE
57 #define CPUMASK_SIMPLE(cpu)		((uint64_t)1 << (cpu))
58 #define CPUMASK_TESTBIT(val, i)		((val).ary[((i) >> 6) & 3] & \
59 					 CPUMASK_SIMPLE((i) & 63))
60 #define CPUMASK_ORBIT(mask, i)		((mask).ary[((i) >> 6) & 3] |= \
61 					 CPUMASK_SIMPLE((i) & 63))
62 #define CPUMASK_NANDBIT(mask, i)	((mask).ary[((i) >> 6) & 3] &= \
63 					 ~CPUMASK_SIMPLE((i) & 63))
64 #define CPUMASK_ASSZERO(mask)		do {				\
65 					(mask).ary[0] = 0;		\
66 					(mask).ary[1] = 0;		\
67 					(mask).ary[2] = 0;		\
68 					(mask).ary[3] = 0;		\
69 					} while(0)
70 #endif
71 
72 /*
73  * Define USCHED_GET_CPUMASK as the macro didn't exist until release 4.5.
74  * usched_set(2) returns EINVAL if the kernel doesn't support it.
75  *
76  * Also note usched_set(2) works only for the current thread regardless of
77  * the command type. It doesn't work against another thread regardless of
78  * a caller's privilege. A caller would generally specify 0 for pid for the
79  * current thread though that's the only choice. See BUGS in usched_set(2).
80  */
81 #ifndef USCHED_GET_CPUMASK
82 #define USCHED_GET_CPUMASK	5
83 #endif
84 
85 /* No CPU_COUNT(), but use the default function defined in os/os.h */
86 #define fio_cpu_count(mask)             CPU_COUNT((mask))
87 
fio_cpuset_init(os_cpu_mask_t * mask)88 static inline int fio_cpuset_init(os_cpu_mask_t *mask)
89 {
90 	CPUMASK_ASSZERO(*mask);
91 	return 0;
92 }
93 
fio_cpuset_exit(os_cpu_mask_t * mask)94 static inline int fio_cpuset_exit(os_cpu_mask_t *mask)
95 {
96 	return 0;
97 }
98 
fio_cpu_clear(os_cpu_mask_t * mask,int cpu)99 static inline void fio_cpu_clear(os_cpu_mask_t *mask, int cpu)
100 {
101 	CPUMASK_NANDBIT(*mask, cpu);
102 }
103 
fio_cpu_set(os_cpu_mask_t * mask,int cpu)104 static inline void fio_cpu_set(os_cpu_mask_t *mask, int cpu)
105 {
106 	CPUMASK_ORBIT(*mask, cpu);
107 }
108 
fio_cpu_isset(os_cpu_mask_t * mask,int cpu)109 static inline int fio_cpu_isset(os_cpu_mask_t *mask, int cpu)
110 {
111 	if (CPUMASK_TESTBIT(*mask, cpu))
112 		return 1;
113 
114 	return 0;
115 }
116 
fio_setaffinity(int pid,os_cpu_mask_t mask)117 static inline int fio_setaffinity(int pid, os_cpu_mask_t mask)
118 {
119 	int i, firstcall = 1;
120 
121 	/* 0 for the current thread, see BUGS in usched_set(2) */
122 	pid = 0;
123 
124 	for (i = 0; i < FIO_MAX_CPUS; i++) {
125 		if (!CPUMASK_TESTBIT(mask, i))
126 			continue;
127 		if (firstcall) {
128 			if (usched_set(pid, USCHED_SET_CPU, &i, sizeof(int)))
129 				return -1;
130 			firstcall = 0;
131 		} else {
132 			if (usched_set(pid, USCHED_ADD_CPU, &i, sizeof(int)))
133 				return -1;
134 		}
135 	}
136 
137 	return 0;
138 }
139 
fio_getaffinity(int pid,os_cpu_mask_t * mask)140 static inline int fio_getaffinity(int pid, os_cpu_mask_t *mask)
141 {
142 	/* 0 for the current thread, see BUGS in usched_set(2) */
143 	pid = 0;
144 
145 	if (usched_set(pid, USCHED_GET_CPUMASK, mask, sizeof(*mask)))
146 		return -1;
147 
148 	return 0;
149 }
150 
151 /* fio code is Linux based, so rename macros to Linux style */
152 #define IOPRIO_WHO_PROCESS	PRIO_PROCESS
153 #define IOPRIO_WHO_PGRP		PRIO_PGRP
154 #define IOPRIO_WHO_USER		PRIO_USER
155 
156 #define IOPRIO_MIN_PRIO		1	/* lowest priority */
157 #define IOPRIO_MAX_PRIO		10	/* highest priority */
158 
159 /*
160  * Prototypes declared in sys/sys/resource.h are preventing from defining
161  * ioprio_set() with 4 arguments, so define fio's ioprio_set() as a macro.
162  * Note that there is no idea of class within ioprio_set(2) unlike Linux.
163  */
164 #define ioprio_set(which, who, ioprio_class, ioprio)	\
165 	ioprio_set(which, who, ioprio)
166 
blockdev_size(struct fio_file * f,unsigned long long * bytes)167 static inline int blockdev_size(struct fio_file *f, unsigned long long *bytes)
168 {
169 	struct partinfo pi;
170 
171 	if (!ioctl(f->fd, DIOCGPART, &pi)) {
172 		*bytes = (unsigned long long) pi.media_size;
173 		return 0;
174 	}
175 
176 	*bytes = 0;
177 	return errno;
178 }
179 
chardev_size(struct fio_file * f,unsigned long long * bytes)180 static inline int chardev_size(struct fio_file *f, unsigned long long *bytes)
181 {
182 	return blockdev_size(f, bytes);
183 }
184 
blockdev_invalidate_cache(struct fio_file * f)185 static inline int blockdev_invalidate_cache(struct fio_file *f)
186 {
187 	return ENOTSUP;
188 }
189 
os_phys_mem(void)190 static inline unsigned long long os_phys_mem(void)
191 {
192 	int mib[2] = { CTL_HW, HW_PHYSMEM };
193 	uint64_t mem;
194 	size_t len = sizeof(mem);
195 
196 	sysctl(mib, 2, &mem, &len, NULL, 0);
197 	return mem;
198 }
199 
gettid(void)200 static inline int gettid(void)
201 {
202 	return (int) lwp_gettid();
203 }
204 
get_fs_free_size(const char * path)205 static inline unsigned long long get_fs_free_size(const char *path)
206 {
207 	unsigned long long ret;
208 	struct statvfs s;
209 
210 	if (statvfs(path, &s) < 0)
211 		return -1ULL;
212 
213 	ret = s.f_frsize;
214 	ret *= (unsigned long long) s.f_bfree;
215 	return ret;
216 }
217 
os_trim(int fd,unsigned long long start,unsigned long long len)218 static inline int os_trim(int fd, unsigned long long start,
219 			  unsigned long long len)
220 {
221 	off_t range[2];
222 
223 	range[0] = start;
224 	range[1] = len;
225 
226 	if (!ioctl(fd, IOCTLTRIM, range))
227 		return 0;
228 
229 	return errno;
230 }
231 
232 #ifdef MADV_FREE
233 #define FIO_MADV_FREE	MADV_FREE
234 #endif
235 
shm_attach_to_open_removed(void)236 static inline int shm_attach_to_open_removed(void)
237 {
238 	int x;
239 	size_t len = sizeof(x);
240 
241 	if (sysctlbyname("kern.ipc.shm_allow_removed", &x, &len, NULL, 0) < 0)
242 		return 0;
243 
244 	return x > 0 ? 1 : 0;
245 }
246 
247 #endif
248