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authorMathieu Desnoyers <compudj@krystal.dyndns.org>2008-02-08 18:00:45 -0500
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2008-02-08 18:33:32 -0500
commit6784fd5931a58559673f500a333030ceaadb69bb (patch)
tree911673988500ab7c923b210220a462286741c485 /include
parentb55fcb22d445a7460cbbc138ceae096d5617715a (diff)
Fix FRV cmpxchg_local
Fix the FRV cmpxchg_local by breaking the following header dependency loop : linux/kernel.h -> linux/bitops.h -> asm-frv/bitops.h -> asm-frv/atomic.h -> asm-frv/system.h -> asm-generic/cmpxchg_local.h -> typecheck() defined in linux/kernel.h and linux/kernel.h -> linux/bitops.h -> asm-frv/bitops.h -> asm-frv/atomic.h -> asm-generic/cmpxchg_local.h -> typecheck() defined in linux/kernel.h In order to fix this : - Move the atomic_test_and_ *_mask inlines from asm-frv/atomic.h (why are they there at all anyway ? They are not touching atomic_t variables!) to asm-frv/bitops.h. Also fix a build issue with cmpxchg : it does not cast to (unsigned long *) like other architectures, to deal with it in the cmpxchg_local macro. FRV builds fine with this patch. Thanks to Adrian Bunk <bunk@kernel.org> for spotting this bug. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Cc: Adrian Bunk <bunk@kernel.org> Cc: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
-rw-r--r--include/asm-frv/atomic.h81
-rw-r--r--include/asm-frv/bitops.h83
-rw-r--r--include/asm-frv/system.h3
3 files changed, 83 insertions, 84 deletions
diff --git a/include/asm-frv/atomic.h b/include/asm-frv/atomic.h
index 6ec494a5bc5a..46d696b331e7 100644
--- a/include/asm-frv/atomic.h
+++ b/include/asm-frv/atomic.h
@@ -125,87 +125,6 @@ static inline void atomic_dec(atomic_t *v)
125#define atomic_dec_and_test(v) (atomic_sub_return(1, (v)) == 0) 125#define atomic_dec_and_test(v) (atomic_sub_return(1, (v)) == 0)
126#define atomic_inc_and_test(v) (atomic_add_return(1, (v)) == 0) 126#define atomic_inc_and_test(v) (atomic_add_return(1, (v)) == 0)
127 127
128#ifndef CONFIG_FRV_OUTOFLINE_ATOMIC_OPS
129static inline
130unsigned long atomic_test_and_ANDNOT_mask(unsigned long mask, volatile unsigned long *v)
131{
132 unsigned long old, tmp;
133
134 asm volatile(
135 "0: \n"
136 " orcc gr0,gr0,gr0,icc3 \n" /* set ICC3.Z */
137 " ckeq icc3,cc7 \n"
138 " ld.p %M0,%1 \n" /* LD.P/ORCR are atomic */
139 " orcr cc7,cc7,cc3 \n" /* set CC3 to true */
140 " and%I3 %1,%3,%2 \n"
141 " cst.p %2,%M0 ,cc3,#1 \n" /* if store happens... */
142 " corcc gr29,gr29,gr0 ,cc3,#1 \n" /* ... clear ICC3.Z */
143 " beq icc3,#0,0b \n"
144 : "+U"(*v), "=&r"(old), "=r"(tmp)
145 : "NPr"(~mask)
146 : "memory", "cc7", "cc3", "icc3"
147 );
148
149 return old;
150}
151
152static inline
153unsigned long atomic_test_and_OR_mask(unsigned long mask, volatile unsigned long *v)
154{
155 unsigned long old, tmp;
156
157 asm volatile(
158 "0: \n"
159 " orcc gr0,gr0,gr0,icc3 \n" /* set ICC3.Z */
160 " ckeq icc3,cc7 \n"
161 " ld.p %M0,%1 \n" /* LD.P/ORCR are atomic */
162 " orcr cc7,cc7,cc3 \n" /* set CC3 to true */
163 " or%I3 %1,%3,%2 \n"
164 " cst.p %2,%M0 ,cc3,#1 \n" /* if store happens... */
165 " corcc gr29,gr29,gr0 ,cc3,#1 \n" /* ... clear ICC3.Z */
166 " beq icc3,#0,0b \n"
167 : "+U"(*v), "=&r"(old), "=r"(tmp)
168 : "NPr"(mask)
169 : "memory", "cc7", "cc3", "icc3"
170 );
171
172 return old;
173}
174
175static inline
176unsigned long atomic_test_and_XOR_mask(unsigned long mask, volatile unsigned long *v)
177{
178 unsigned long old, tmp;
179
180 asm volatile(
181 "0: \n"
182 " orcc gr0,gr0,gr0,icc3 \n" /* set ICC3.Z */
183 " ckeq icc3,cc7 \n"
184 " ld.p %M0,%1 \n" /* LD.P/ORCR are atomic */
185 " orcr cc7,cc7,cc3 \n" /* set CC3 to true */
186 " xor%I3 %1,%3,%2 \n"
187 " cst.p %2,%M0 ,cc3,#1 \n" /* if store happens... */
188 " corcc gr29,gr29,gr0 ,cc3,#1 \n" /* ... clear ICC3.Z */
189 " beq icc3,#0,0b \n"
190 : "+U"(*v), "=&r"(old), "=r"(tmp)
191 : "NPr"(mask)
192 : "memory", "cc7", "cc3", "icc3"
193 );
194
195 return old;
196}
197
198#else
199
200extern unsigned long atomic_test_and_ANDNOT_mask(unsigned long mask, volatile unsigned long *v);
201extern unsigned long atomic_test_and_OR_mask(unsigned long mask, volatile unsigned long *v);
202extern unsigned long atomic_test_and_XOR_mask(unsigned long mask, volatile unsigned long *v);
203
204#endif
205
206#define atomic_clear_mask(mask, v) atomic_test_and_ANDNOT_mask((mask), (v))
207#define atomic_set_mask(mask, v) atomic_test_and_OR_mask((mask), (v))
208
209/*****************************************************************************/ 128/*****************************************************************************/
210/* 129/*
211 * exchange value with memory 130 * exchange value with memory
diff --git a/include/asm-frv/bitops.h b/include/asm-frv/bitops.h
index 5f86b876b298..39456ba0ec17 100644
--- a/include/asm-frv/bitops.h
+++ b/include/asm-frv/bitops.h
@@ -16,8 +16,6 @@
16 16
17#include <linux/compiler.h> 17#include <linux/compiler.h>
18#include <asm/byteorder.h> 18#include <asm/byteorder.h>
19#include <asm/system.h>
20#include <asm/atomic.h>
21 19
22#ifdef __KERNEL__ 20#ifdef __KERNEL__
23 21
@@ -33,6 +31,87 @@
33#define smp_mb__before_clear_bit() barrier() 31#define smp_mb__before_clear_bit() barrier()
34#define smp_mb__after_clear_bit() barrier() 32#define smp_mb__after_clear_bit() barrier()
35 33
34#ifndef CONFIG_FRV_OUTOFLINE_ATOMIC_OPS
35static inline
36unsigned long atomic_test_and_ANDNOT_mask(unsigned long mask, volatile unsigned long *v)
37{
38 unsigned long old, tmp;
39
40 asm volatile(
41 "0: \n"
42 " orcc gr0,gr0,gr0,icc3 \n" /* set ICC3.Z */
43 " ckeq icc3,cc7 \n"
44 " ld.p %M0,%1 \n" /* LD.P/ORCR are atomic */
45 " orcr cc7,cc7,cc3 \n" /* set CC3 to true */
46 " and%I3 %1,%3,%2 \n"
47 " cst.p %2,%M0 ,cc3,#1 \n" /* if store happens... */
48 " corcc gr29,gr29,gr0 ,cc3,#1 \n" /* ... clear ICC3.Z */
49 " beq icc3,#0,0b \n"
50 : "+U"(*v), "=&r"(old), "=r"(tmp)
51 : "NPr"(~mask)
52 : "memory", "cc7", "cc3", "icc3"
53 );
54
55 return old;
56}
57
58static inline
59unsigned long atomic_test_and_OR_mask(unsigned long mask, volatile unsigned long *v)
60{
61 unsigned long old, tmp;
62
63 asm volatile(
64 "0: \n"
65 " orcc gr0,gr0,gr0,icc3 \n" /* set ICC3.Z */
66 " ckeq icc3,cc7 \n"
67 " ld.p %M0,%1 \n" /* LD.P/ORCR are atomic */
68 " orcr cc7,cc7,cc3 \n" /* set CC3 to true */
69 " or%I3 %1,%3,%2 \n"
70 " cst.p %2,%M0 ,cc3,#1 \n" /* if store happens... */
71 " corcc gr29,gr29,gr0 ,cc3,#1 \n" /* ... clear ICC3.Z */
72 " beq icc3,#0,0b \n"
73 : "+U"(*v), "=&r"(old), "=r"(tmp)
74 : "NPr"(mask)
75 : "memory", "cc7", "cc3", "icc3"
76 );
77
78 return old;
79}
80
81static inline
82unsigned long atomic_test_and_XOR_mask(unsigned long mask, volatile unsigned long *v)
83{
84 unsigned long old, tmp;
85
86 asm volatile(
87 "0: \n"
88 " orcc gr0,gr0,gr0,icc3 \n" /* set ICC3.Z */
89 " ckeq icc3,cc7 \n"
90 " ld.p %M0,%1 \n" /* LD.P/ORCR are atomic */
91 " orcr cc7,cc7,cc3 \n" /* set CC3 to true */
92 " xor%I3 %1,%3,%2 \n"
93 " cst.p %2,%M0 ,cc3,#1 \n" /* if store happens... */
94 " corcc gr29,gr29,gr0 ,cc3,#1 \n" /* ... clear ICC3.Z */
95 " beq icc3,#0,0b \n"
96 : "+U"(*v), "=&r"(old), "=r"(tmp)
97 : "NPr"(mask)
98 : "memory", "cc7", "cc3", "icc3"
99 );
100
101 return old;
102}
103
104#else
105
106extern unsigned long atomic_test_and_ANDNOT_mask(unsigned long mask, volatile unsigned long *v);
107extern unsigned long atomic_test_and_OR_mask(unsigned long mask, volatile unsigned long *v);
108extern unsigned long atomic_test_and_XOR_mask(unsigned long mask, volatile unsigned long *v);
109
110#endif
111
112#define atomic_clear_mask(mask, v) atomic_test_and_ANDNOT_mask((mask), (v))
113#define atomic_set_mask(mask, v) atomic_test_and_OR_mask((mask), (v))
114
36static inline int test_and_clear_bit(int nr, volatile void *addr) 115static inline int test_and_clear_bit(int nr, volatile void *addr)
37{ 116{
38 volatile unsigned long *ptr = addr; 117 volatile unsigned long *ptr = addr;
diff --git a/include/asm-frv/system.h b/include/asm-frv/system.h
index 59be5443a68f..b400cea81487 100644
--- a/include/asm-frv/system.h
+++ b/include/asm-frv/system.h
@@ -14,6 +14,7 @@
14 14
15#include <linux/types.h> 15#include <linux/types.h>
16#include <linux/linkage.h> 16#include <linux/linkage.h>
17#include <linux/kernel.h>
17 18
18struct thread_struct; 19struct thread_struct;
19 20
@@ -276,7 +277,7 @@ static inline unsigned long __cmpxchg_local(volatile void *ptr,
276{ 277{
277 switch (size) { 278 switch (size) {
278 case 4: 279 case 4:
279 return cmpxchg(ptr, old, new); 280 return cmpxchg((unsigned long *)ptr, old, new);
280 default: 281 default:
281 return __cmpxchg_local_generic(ptr, old, new, size); 282 return __cmpxchg_local_generic(ptr, old, new, size);
282 } 283 }
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-25 09:35:24 -0500