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Diffstat (limited to 'arch/s390/include/asm/rwsem.h')
-rw-r--r--arch/s390/include/asm/rwsem.h63
1 files changed, 30 insertions, 33 deletions
diff --git a/arch/s390/include/asm/rwsem.h b/arch/s390/include/asm/rwsem.h
index d0eb4653cebd..1ceee10264c3 100644
--- a/arch/s390/include/asm/rwsem.h
+++ b/arch/s390/include/asm/rwsem.h
@@ -41,19 +41,17 @@
41#error "please don't include asm/rwsem.h directly, use linux/rwsem.h instead" 41#error "please don't include asm/rwsem.h directly, use linux/rwsem.h instead"
42#endif 42#endif
43 43
44#ifdef __KERNEL__ 44#ifndef CONFIG_64BIT
45
46#ifndef __s390x__
47#define RWSEM_UNLOCKED_VALUE 0x00000000 45#define RWSEM_UNLOCKED_VALUE 0x00000000
48#define RWSEM_ACTIVE_BIAS 0x00000001 46#define RWSEM_ACTIVE_BIAS 0x00000001
49#define RWSEM_ACTIVE_MASK 0x0000ffff 47#define RWSEM_ACTIVE_MASK 0x0000ffff
50#define RWSEM_WAITING_BIAS (-0x00010000) 48#define RWSEM_WAITING_BIAS (-0x00010000)
51#else /* __s390x__ */ 49#else /* CONFIG_64BIT */
52#define RWSEM_UNLOCKED_VALUE 0x0000000000000000L 50#define RWSEM_UNLOCKED_VALUE 0x0000000000000000L
53#define RWSEM_ACTIVE_BIAS 0x0000000000000001L 51#define RWSEM_ACTIVE_BIAS 0x0000000000000001L
54#define RWSEM_ACTIVE_MASK 0x00000000ffffffffL 52#define RWSEM_ACTIVE_MASK 0x00000000ffffffffL
55#define RWSEM_WAITING_BIAS (-0x0000000100000000L) 53#define RWSEM_WAITING_BIAS (-0x0000000100000000L)
56#endif /* __s390x__ */ 54#endif /* CONFIG_64BIT */
57#define RWSEM_ACTIVE_READ_BIAS RWSEM_ACTIVE_BIAS 55#define RWSEM_ACTIVE_READ_BIAS RWSEM_ACTIVE_BIAS
58#define RWSEM_ACTIVE_WRITE_BIAS (RWSEM_WAITING_BIAS + RWSEM_ACTIVE_BIAS) 56#define RWSEM_ACTIVE_WRITE_BIAS (RWSEM_WAITING_BIAS + RWSEM_ACTIVE_BIAS)
59 57
@@ -65,19 +63,19 @@ static inline void __down_read(struct rw_semaphore *sem)
65 signed long old, new; 63 signed long old, new;
66 64
67 asm volatile( 65 asm volatile(
68#ifndef __s390x__ 66#ifndef CONFIG_64BIT
69 " l %0,%2\n" 67 " l %0,%2\n"
70 "0: lr %1,%0\n" 68 "0: lr %1,%0\n"
71 " ahi %1,%4\n" 69 " ahi %1,%4\n"
72 " cs %0,%1,%2\n" 70 " cs %0,%1,%2\n"
73 " jl 0b" 71 " jl 0b"
74#else /* __s390x__ */ 72#else /* CONFIG_64BIT */
75 " lg %0,%2\n" 73 " lg %0,%2\n"
76 "0: lgr %1,%0\n" 74 "0: lgr %1,%0\n"
77 " aghi %1,%4\n" 75 " aghi %1,%4\n"
78 " csg %0,%1,%2\n" 76 " csg %0,%1,%2\n"
79 " jl 0b" 77 " jl 0b"
80#endif /* __s390x__ */ 78#endif /* CONFIG_64BIT */
81 : "=&d" (old), "=&d" (new), "=Q" (sem->count) 79 : "=&d" (old), "=&d" (new), "=Q" (sem->count)
82 : "Q" (sem->count), "i" (RWSEM_ACTIVE_READ_BIAS) 80 : "Q" (sem->count), "i" (RWSEM_ACTIVE_READ_BIAS)
83 : "cc", "memory"); 81 : "cc", "memory");
@@ -93,7 +91,7 @@ static inline int __down_read_trylock(struct rw_semaphore *sem)
93 signed long old, new; 91 signed long old, new;
94 92
95 asm volatile( 93 asm volatile(
96#ifndef __s390x__ 94#ifndef CONFIG_64BIT
97 " l %0,%2\n" 95 " l %0,%2\n"
98 "0: ltr %1,%0\n" 96 "0: ltr %1,%0\n"
99 " jm 1f\n" 97 " jm 1f\n"
@@ -101,7 +99,7 @@ static inline int __down_read_trylock(struct rw_semaphore *sem)
101 " cs %0,%1,%2\n" 99 " cs %0,%1,%2\n"
102 " jl 0b\n" 100 " jl 0b\n"
103 "1:" 101 "1:"
104#else /* __s390x__ */ 102#else /* CONFIG_64BIT */
105 " lg %0,%2\n" 103 " lg %0,%2\n"
106 "0: ltgr %1,%0\n" 104 "0: ltgr %1,%0\n"
107 " jm 1f\n" 105 " jm 1f\n"
@@ -109,7 +107,7 @@ static inline int __down_read_trylock(struct rw_semaphore *sem)
109 " csg %0,%1,%2\n" 107 " csg %0,%1,%2\n"
110 " jl 0b\n" 108 " jl 0b\n"
111 "1:" 109 "1:"
112#endif /* __s390x__ */ 110#endif /* CONFIG_64BIT */
113 : "=&d" (old), "=&d" (new), "=Q" (sem->count) 111 : "=&d" (old), "=&d" (new), "=Q" (sem->count)
114 : "Q" (sem->count), "i" (RWSEM_ACTIVE_READ_BIAS) 112 : "Q" (sem->count), "i" (RWSEM_ACTIVE_READ_BIAS)
115 : "cc", "memory"); 113 : "cc", "memory");
@@ -125,19 +123,19 @@ static inline void __down_write_nested(struct rw_semaphore *sem, int subclass)
125 123
126 tmp = RWSEM_ACTIVE_WRITE_BIAS; 124 tmp = RWSEM_ACTIVE_WRITE_BIAS;
127 asm volatile( 125 asm volatile(
128#ifndef __s390x__ 126#ifndef CONFIG_64BIT
129 " l %0,%2\n" 127 " l %0,%2\n"
130 "0: lr %1,%0\n" 128 "0: lr %1,%0\n"
131 " a %1,%4\n" 129 " a %1,%4\n"
132 " cs %0,%1,%2\n" 130 " cs %0,%1,%2\n"
133 " jl 0b" 131 " jl 0b"
134#else /* __s390x__ */ 132#else /* CONFIG_64BIT */
135 " lg %0,%2\n" 133 " lg %0,%2\n"
136 "0: lgr %1,%0\n" 134 "0: lgr %1,%0\n"
137 " ag %1,%4\n" 135 " ag %1,%4\n"
138 " csg %0,%1,%2\n" 136 " csg %0,%1,%2\n"
139 " jl 0b" 137 " jl 0b"
140#endif /* __s390x__ */ 138#endif /* CONFIG_64BIT */
141 : "=&d" (old), "=&d" (new), "=Q" (sem->count) 139 : "=&d" (old), "=&d" (new), "=Q" (sem->count)
142 : "Q" (sem->count), "m" (tmp) 140 : "Q" (sem->count), "m" (tmp)
143 : "cc", "memory"); 141 : "cc", "memory");
@@ -158,19 +156,19 @@ static inline int __down_write_trylock(struct rw_semaphore *sem)
158 signed long old; 156 signed long old;
159 157
160 asm volatile( 158 asm volatile(
161#ifndef __s390x__ 159#ifndef CONFIG_64BIT
162 " l %0,%1\n" 160 " l %0,%1\n"
163 "0: ltr %0,%0\n" 161 "0: ltr %0,%0\n"
164 " jnz 1f\n" 162 " jnz 1f\n"
165 " cs %0,%3,%1\n" 163 " cs %0,%3,%1\n"
166 " jl 0b\n" 164 " jl 0b\n"
167#else /* __s390x__ */ 165#else /* CONFIG_64BIT */
168 " lg %0,%1\n" 166 " lg %0,%1\n"
169 "0: ltgr %0,%0\n" 167 "0: ltgr %0,%0\n"
170 " jnz 1f\n" 168 " jnz 1f\n"
171 " csg %0,%3,%1\n" 169 " csg %0,%3,%1\n"
172 " jl 0b\n" 170 " jl 0b\n"
173#endif /* __s390x__ */ 171#endif /* CONFIG_64BIT */
174 "1:" 172 "1:"
175 : "=&d" (old), "=Q" (sem->count) 173 : "=&d" (old), "=Q" (sem->count)
176 : "Q" (sem->count), "d" (RWSEM_ACTIVE_WRITE_BIAS) 174 : "Q" (sem->count), "d" (RWSEM_ACTIVE_WRITE_BIAS)
@@ -186,19 +184,19 @@ static inline void __up_read(struct rw_semaphore *sem)
186 signed long old, new; 184 signed long old, new;
187 185
188 asm volatile( 186 asm volatile(
189#ifndef __s390x__ 187#ifndef CONFIG_64BIT
190 " l %0,%2\n" 188 " l %0,%2\n"
191 "0: lr %1,%0\n" 189 "0: lr %1,%0\n"
192 " ahi %1,%4\n" 190 " ahi %1,%4\n"
193 " cs %0,%1,%2\n" 191 " cs %0,%1,%2\n"
194 " jl 0b" 192 " jl 0b"
195#else /* __s390x__ */ 193#else /* CONFIG_64BIT */
196 " lg %0,%2\n" 194 " lg %0,%2\n"
197 "0: lgr %1,%0\n" 195 "0: lgr %1,%0\n"
198 " aghi %1,%4\n" 196 " aghi %1,%4\n"
199 " csg %0,%1,%2\n" 197 " csg %0,%1,%2\n"
200 " jl 0b" 198 " jl 0b"
201#endif /* __s390x__ */ 199#endif /* CONFIG_64BIT */
202 : "=&d" (old), "=&d" (new), "=Q" (sem->count) 200 : "=&d" (old), "=&d" (new), "=Q" (sem->count)
203 : "Q" (sem->count), "i" (-RWSEM_ACTIVE_READ_BIAS) 201 : "Q" (sem->count), "i" (-RWSEM_ACTIVE_READ_BIAS)
204 : "cc", "memory"); 202 : "cc", "memory");
@@ -216,19 +214,19 @@ static inline void __up_write(struct rw_semaphore *sem)
216 214
217 tmp = -RWSEM_ACTIVE_WRITE_BIAS; 215 tmp = -RWSEM_ACTIVE_WRITE_BIAS;
218 asm volatile( 216 asm volatile(
219#ifndef __s390x__ 217#ifndef CONFIG_64BIT
220 " l %0,%2\n" 218 " l %0,%2\n"
221 "0: lr %1,%0\n" 219 "0: lr %1,%0\n"
222 " a %1,%4\n" 220 " a %1,%4\n"
223 " cs %0,%1,%2\n" 221 " cs %0,%1,%2\n"
224 " jl 0b" 222 " jl 0b"
225#else /* __s390x__ */ 223#else /* CONFIG_64BIT */
226 " lg %0,%2\n" 224 " lg %0,%2\n"
227 "0: lgr %1,%0\n" 225 "0: lgr %1,%0\n"
228 " ag %1,%4\n" 226 " ag %1,%4\n"
229 " csg %0,%1,%2\n" 227 " csg %0,%1,%2\n"
230 " jl 0b" 228 " jl 0b"
231#endif /* __s390x__ */ 229#endif /* CONFIG_64BIT */
232 : "=&d" (old), "=&d" (new), "=Q" (sem->count) 230 : "=&d" (old), "=&d" (new), "=Q" (sem->count)
233 : "Q" (sem->count), "m" (tmp) 231 : "Q" (sem->count), "m" (tmp)
234 : "cc", "memory"); 232 : "cc", "memory");
@@ -246,19 +244,19 @@ static inline void __downgrade_write(struct rw_semaphore *sem)
246 244
247 tmp = -RWSEM_WAITING_BIAS; 245 tmp = -RWSEM_WAITING_BIAS;
248 asm volatile( 246 asm volatile(
249#ifndef __s390x__ 247#ifndef CONFIG_64BIT
250 " l %0,%2\n" 248 " l %0,%2\n"
251 "0: lr %1,%0\n" 249 "0: lr %1,%0\n"
252 " a %1,%4\n" 250 " a %1,%4\n"
253 " cs %0,%1,%2\n" 251 " cs %0,%1,%2\n"
254 " jl 0b" 252 " jl 0b"
255#else /* __s390x__ */ 253#else /* CONFIG_64BIT */
256 " lg %0,%2\n" 254 " lg %0,%2\n"
257 "0: lgr %1,%0\n" 255 "0: lgr %1,%0\n"
258 " ag %1,%4\n" 256 " ag %1,%4\n"
259 " csg %0,%1,%2\n" 257 " csg %0,%1,%2\n"
260 " jl 0b" 258 " jl 0b"
261#endif /* __s390x__ */ 259#endif /* CONFIG_64BIT */
262 : "=&d" (old), "=&d" (new), "=Q" (sem->count) 260 : "=&d" (old), "=&d" (new), "=Q" (sem->count)
263 : "Q" (sem->count), "m" (tmp) 261 : "Q" (sem->count), "m" (tmp)
264 : "cc", "memory"); 262 : "cc", "memory");
@@ -274,19 +272,19 @@ static inline void rwsem_atomic_add(long delta, struct rw_semaphore *sem)
274 signed long old, new; 272 signed long old, new;
275 273
276 asm volatile( 274 asm volatile(
277#ifndef __s390x__ 275#ifndef CONFIG_64BIT
278 " l %0,%2\n" 276 " l %0,%2\n"
279 "0: lr %1,%0\n" 277 "0: lr %1,%0\n"
280 " ar %1,%4\n" 278 " ar %1,%4\n"
281 " cs %0,%1,%2\n" 279 " cs %0,%1,%2\n"
282 " jl 0b" 280 " jl 0b"
283#else /* __s390x__ */ 281#else /* CONFIG_64BIT */
284 " lg %0,%2\n" 282 " lg %0,%2\n"
285 "0: lgr %1,%0\n" 283 "0: lgr %1,%0\n"
286 " agr %1,%4\n" 284 " agr %1,%4\n"
287 " csg %0,%1,%2\n" 285 " csg %0,%1,%2\n"
288 " jl 0b" 286 " jl 0b"
289#endif /* __s390x__ */ 287#endif /* CONFIG_64BIT */
290 : "=&d" (old), "=&d" (new), "=Q" (sem->count) 288 : "=&d" (old), "=&d" (new), "=Q" (sem->count)
291 : "Q" (sem->count), "d" (delta) 289 : "Q" (sem->count), "d" (delta)
292 : "cc", "memory"); 290 : "cc", "memory");
@@ -300,24 +298,23 @@ static inline long rwsem_atomic_update(long delta, struct rw_semaphore *sem)
300 signed long old, new; 298 signed long old, new;
301 299
302 asm volatile( 300 asm volatile(
303#ifndef __s390x__ 301#ifndef CONFIG_64BIT
304 " l %0,%2\n" 302 " l %0,%2\n"
305 "0: lr %1,%0\n" 303 "0: lr %1,%0\n"
306 " ar %1,%4\n" 304 " ar %1,%4\n"
307 " cs %0,%1,%2\n" 305 " cs %0,%1,%2\n"
308 " jl 0b" 306 " jl 0b"
309#else /* __s390x__ */ 307#else /* CONFIG_64BIT */
310 " lg %0,%2\n" 308 " lg %0,%2\n"
311 "0: lgr %1,%0\n" 309 "0: lgr %1,%0\n"
312 " agr %1,%4\n" 310 " agr %1,%4\n"
313 " csg %0,%1,%2\n" 311 " csg %0,%1,%2\n"
314 " jl 0b" 312 " jl 0b"
315#endif /* __s390x__ */ 313#endif /* CONFIG_64BIT */
316 : "=&d" (old), "=&d" (new), "=Q" (sem->count) 314 : "=&d" (old), "=&d" (new), "=Q" (sem->count)
317 : "Q" (sem->count), "d" (delta) 315 : "Q" (sem->count), "d" (delta)
318 : "cc", "memory"); 316 : "cc", "memory");
319 return new; 317 return new;
320} 318}
321 319
322#endif /* __KERNEL__ */
323#endif /* _S390_RWSEM_H */ 320#endif /* _S390_RWSEM_H */
generated by cgit v1.2.2 (git 2.25.0) at 2024-10-10 00:17:08 -0400