Fedora kernel-2.6.17-1.2142_FC4 patched with stable patch-2.6.17.4-vs2.0.2-rc26.diff

[linux-2.6.git] / include / asm-frv / atomic.h

diff --git a/include/asm-frv/atomic.h b/include/asm-frv/atomic.h
index e759684..5d9f84b 100644 (file)
--- a/include/asm-frv/atomic.h
+++ b/include/asm-frv/atomic.h
@@ -218,51 +218,12 @@ extern unsigned long atomic_test_and_XOR_mask(unsigned long mask, volatile unsig
        __typeof__(*(ptr)) __xg_orig;                                           \
                                                                                \
        switch (sizeof(__xg_orig)) {                                            \
-       case 1:                                                                 \
-               asm volatile(                                                   \
-                       "0:                                             \n"     \
-                       "       orcc            gr0,gr0,gr0,icc3        \n"     \
-                       "       ckeq            icc3,cc7                \n"     \
-                       "       ldub.p          %M0,%1                  \n"     \
-                       "       orcr            cc7,cc7,cc3             \n"     \
-                       "       cstb.p          %2,%M0          ,cc3,#1 \n"     \
-                       "       corcc           gr29,gr29,gr0   ,cc3,#1 \n"     \
-                       "       beq             icc3,#0,0b              \n"     \
-                       : "+U"(*__xg_ptr), "=&r"(__xg_orig)                     \
-                       : "r"(x)                                                \
-                       : "memory", "cc7", "cc3", "icc3"                        \
-                       );                                                      \
-               break;                                                          \
-                                                                               \
-       case 2:                                                                 \
-               asm volatile(                                                   \
-                       "0:                                             \n"     \
-                       "       orcc            gr0,gr0,gr0,icc3        \n"     \
-                       "       ckeq            icc3,cc7                \n"     \
-                       "       lduh.p          %M0,%1                  \n"     \
-                       "       orcr            cc7,cc7,cc3             \n"     \
-                       "       csth.p          %2,%M0          ,cc3,#1 \n"     \
-                       "       corcc           gr29,gr29,gr0   ,cc3,#1 \n"     \
-                       "       beq             icc3,#0,0b              \n"     \
-                       : "+U"(*__xg_ptr), "=&r"(__xg_orig)                     \
-                       : "r"(x)                                                \
-                       : "memory", "cc7", "cc3", "icc3"                        \
-                       );                                                      \
-               break;                                                          \
-                                                                               \
        case 4:                                                                 \
                asm volatile(                                                   \
-                       "0:                                             \n"     \
-                       "       orcc            gr0,gr0,gr0,icc3        \n"     \
-                       "       ckeq            icc3,cc7                \n"     \
-                       "       ld.p            %M0,%1                  \n"     \
-                       "       orcr            cc7,cc7,cc3             \n"     \
-                       "       cst.p           %2,%M0          ,cc3,#1 \n"     \
-                       "       corcc           gr29,gr29,gr0   ,cc3,#1 \n"     \
-                       "       beq             icc3,#0,0b              \n"     \
-                       : "+U"(*__xg_ptr), "=&r"(__xg_orig)                     \
-                       : "r"(x)                                                \
-                       : "memory", "cc7", "cc3", "icc3"                        \
+                       "swap%I0 %M0,%1"                                        \
+                       : "+m"(*__xg_ptr), "=r"(__xg_orig)                      \
+                       : "1"(x)                                                \
+                       : "memory"                                              \
                        );                                                      \
                break;                                                          \
                                                                                \
@@ -277,8 +238,6 @@ extern unsigned long atomic_test_and_XOR_mask(unsigned long mask, volatile unsig
 
 #else
 
-extern uint8_t  __xchg_8 (uint8_t i,  volatile void *v);
-extern uint16_t __xchg_16(uint16_t i, volatile void *v);
 extern uint32_t __xchg_32(uint32_t i, volatile void *v);
 
 #define xchg(ptr, x)                                                                           \
@@ -287,8 +246,6 @@ extern uint32_t __xchg_32(uint32_t i, volatile void *v);
        __typeof__(*(ptr)) __xg_orig;                                                           \
                                                                                                \
        switch (sizeof(__xg_orig)) {                                                            \
-       case 1: __xg_orig = (__typeof__(*(ptr))) __xchg_8 ((uint8_t)  x, __xg_ptr);     break;  \
-       case 2: __xg_orig = (__typeof__(*(ptr))) __xchg_16((uint16_t) x, __xg_ptr);     break;  \
        case 4: __xg_orig = (__typeof__(*(ptr))) __xchg_32((uint32_t) x, __xg_ptr);     break;  \
        default:                                                                                \
                __xg_orig = 0;                                                                  \
@@ -318,46 +275,6 @@ extern uint32_t __xchg_32(uint32_t i, volatile void *v);
        __typeof__(*(ptr)) __xg_new = (new);                                    \
                                                                                \
        switch (sizeof(__xg_orig)) {                                            \
-       case 1:                                                                 \
-               asm volatile(                                                   \
-                       "0:                                             \n"     \
-                       "       orcc            gr0,gr0,gr0,icc3        \n"     \
-                       "       ckeq            icc3,cc7                \n"     \
-                       "       ldub.p          %M0,%1                  \n"     \
-                       "       orcr            cc7,cc7,cc3             \n"     \
-                       "       sub%I4          %1,%4,%2                \n"     \
-                       "       sllcc           %2,#24,gr0,icc0         \n"     \
-                       "       bne             icc0,#0,1f              \n"     \
-                       "       cstb.p          %3,%M0          ,cc3,#1 \n"     \
-                       "       corcc           gr29,gr29,gr0   ,cc3,#1 \n"     \
-                       "       beq             icc3,#0,0b              \n"     \
-                       "1:                                             \n"     \
-                       : "+U"(*__xg_ptr), "=&r"(__xg_orig), "=&r"(__xg_tmp)    \
-                       : "r"(__xg_new), "NPr"(__xg_test)                       \
-                       : "memory", "cc7", "cc3", "icc3", "icc0"                \
-                       );                                                      \
-               break;                                                          \
-                                                                               \
-       case 2:                                                                 \
-               asm volatile(                                                   \
-                       "0:                                             \n"     \
-                       "       orcc            gr0,gr0,gr0,icc3        \n"     \
-                       "       ckeq            icc3,cc7                \n"     \
-                       "       lduh.p          %M0,%1                  \n"     \
-                       "       orcr            cc7,cc7,cc3             \n"     \
-                       "       sub%I4          %1,%4,%2                \n"     \
-                       "       sllcc           %2,#16,gr0,icc0         \n"     \
-                       "       bne             icc0,#0,1f              \n"     \
-                       "       csth.p          %3,%M0          ,cc3,#1 \n"     \
-                       "       corcc           gr29,gr29,gr0   ,cc3,#1 \n"     \
-                       "       beq             icc3,#0,0b              \n"     \
-                       "1:                                             \n"     \
-                       : "+U"(*__xg_ptr), "=&r"(__xg_orig), "=&r"(__xg_tmp)    \
-                       : "r"(__xg_new), "NPr"(__xg_test)                       \
-                       : "memory", "cc7", "cc3", "icc3", "icc0"                \
-                       );                                                      \
-               break;                                                          \
-                                                                               \
        case 4:                                                                 \
                asm volatile(                                                   \
                        "0:                                             \n"     \
@@ -388,8 +305,6 @@ extern uint32_t __xchg_32(uint32_t i, volatile void *v);
 
 #else
 
-extern uint8_t  __cmpxchg_8 (uint8_t *v,  uint8_t test,  uint8_t new);
-extern uint16_t __cmpxchg_16(uint16_t *v, uint16_t test, uint16_t new);
 extern uint32_t __cmpxchg_32(uint32_t *v, uint32_t test, uint32_t new);
 
 #define cmpxchg(ptr, test, new)                                                        \
@@ -400,8 +315,6 @@ extern uint32_t __cmpxchg_32(uint32_t *v, uint32_t test, uint32_t new);
        __typeof__(*(ptr)) __xg_new = (new);                                    \
                                                                                \
        switch (sizeof(__xg_orig)) {                                            \
-       case 1: __xg_orig = __cmpxchg_8 (__xg_ptr, __xg_test, __xg_new); break; \
-       case 2: __xg_orig = __cmpxchg_16(__xg_ptr, __xg_test, __xg_new); break; \
        case 4: __xg_orig = __cmpxchg_32(__xg_ptr, __xg_test, __xg_new); break; \
        default:                                                                \
                __xg_orig = 0;                                                  \
@@ -414,4 +327,19 @@ extern uint32_t __cmpxchg_32(uint32_t *v, uint32_t test, uint32_t new);
 
 #endif
 
+#define atomic_cmpxchg(v, old, new) (cmpxchg(&((v)->counter), old, new))
+#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
+
+#define atomic_add_unless(v, a, u)                             \
+({                                                             \
+       int c, old;                                             \
+       c = atomic_read(v);                                     \
+       while (c != (u) && (old = atomic_cmpxchg((v), c, c + (a))) != c) \
+               c = old;                                        \
+       c != (u);                                               \
+})
+
+#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
+
+#include <asm-generic/atomic.h>
 #endif /* _ASM_ATOMIC_H */