Merge HEAD from rsync://rsync.kernel.org/pub/scm/linux/kernel/git/torvalds/linux...

[linux-2.6-omap-h63xx.git] / include / asm-sparc64 / spinlock.h

diff --git a/include/asm-sparc64/spinlock.h b/include/asm-sparc64/spinlock.h
index db7581bdb53141a8493991dc02c8bb20af768f1d..a02c4370eb42e0d1c8f6043a25f900e0ea03ff2c 100644 (file)
--- a/include/asm-sparc64/spinlock.h
+++ b/include/asm-sparc64/spinlock.h
@@ -43,7 +43,7 @@ typedef struct {
 #define spin_is_locked(lp)  ((lp)->lock != 0)
 
 #define spin_unlock_wait(lp)   \
-do {   membar("#LoadLoad");    \
+do {   rmb();                  \
 } while((lp)->lock)
 
 static inline void _raw_spin_lock(spinlock_t *lock)
@@ -52,12 +52,14 @@ static inline void _raw_spin_lock(spinlock_t *lock)
 
        __asm__ __volatile__(
 "1:    ldstub          [%1], %0\n"
+"      membar          #StoreLoad | #StoreStore\n"
 "      brnz,pn         %0, 2f\n"
-"       membar         #StoreLoad | #StoreStore\n"
+"       nop\n"
 "      .subsection     2\n"
 "2:    ldub            [%1], %0\n"
+"      membar          #LoadLoad\n"
 "      brnz,pt         %0, 2b\n"
-"       membar         #LoadLoad\n"
+"       nop\n"
 "      ba,a,pt         %%xcc, 1b\n"
 "      .previous"
        : "=&r" (tmp)
@@ -95,16 +97,18 @@ static inline void _raw_spin_lock_flags(spinlock_t *lock, unsigned long flags)
 
        __asm__ __volatile__(
 "1:    ldstub          [%2], %0\n"
-"      brnz,pn         %0, 2f\n"
 "      membar          #StoreLoad | #StoreStore\n"
+"      brnz,pn         %0, 2f\n"
+"       nop\n"
 "      .subsection     2\n"
 "2:    rdpr            %%pil, %1\n"
 "      wrpr            %3, %%pil\n"
 "3:    ldub            [%2], %0\n"
-"      brnz,pt         %0, 3b\n"
 "      membar          #LoadLoad\n"
+"      brnz,pt         %0, 3b\n"
+"       nop\n"
 "      ba,pt           %%xcc, 1b\n"
-"      wrpr            %1, %%pil\n"
+"       wrpr           %1, %%pil\n"
 "      .previous"
        : "=&r" (tmp1), "=&r" (tmp2)
        : "r"(lock), "r"(flags)
@@ -125,15 +129,18 @@ typedef struct {
 #define spin_is_locked(__lock) ((__lock)->lock != 0)
 #define spin_unlock_wait(__lock)       \
 do { \
-       membar("#LoadLoad"); \
+       rmb(); \
 } while((__lock)->lock)
 
-extern void _do_spin_lock (spinlock_t *lock, char *str);
-extern void _do_spin_unlock (spinlock_t *lock);
-extern int _do_spin_trylock (spinlock_t *lock);
+extern void _do_spin_lock(spinlock_t *lock, char *str, unsigned long caller);
+extern void _do_spin_unlock(spinlock_t *lock);
+extern int _do_spin_trylock(spinlock_t *lock, unsigned long caller);
 
-#define _raw_spin_trylock(lp)  _do_spin_trylock(lp)
-#define _raw_spin_lock(lock)   _do_spin_lock(lock, "spin_lock")
+#define _raw_spin_trylock(lp)  \
+       _do_spin_trylock(lp, (unsigned long) __builtin_return_address(0))
+#define _raw_spin_lock(lock)   \
+       _do_spin_lock(lock, "spin_lock", \
+                     (unsigned long) __builtin_return_address(0))
 #define _raw_spin_unlock(lock) _do_spin_unlock(lock)
 #define _raw_spin_lock_flags(lock, flags) _raw_spin_lock(lock)
 
@@ -162,12 +169,14 @@ static void inline __read_lock(rwlock_t *lock)
 "4:     add            %0, 1, %1\n"
 "      cas             [%2], %0, %1\n"
 "      cmp             %0, %1\n"
+"      membar          #StoreLoad | #StoreStore\n"
 "      bne,pn          %%icc, 1b\n"
-"       membar         #StoreLoad | #StoreStore\n"
+"       nop\n"
 "      .subsection     2\n"
 "2:    ldsw            [%2], %0\n"
+"      membar          #LoadLoad\n"
 "      brlz,pt         %0, 2b\n"
-"       membar         #LoadLoad\n"
+"       nop\n"
 "      ba,a,pt         %%xcc, 4b\n"
 "      .previous"
        : "=&r" (tmp1), "=&r" (tmp2)
@@ -204,12 +213,14 @@ static void inline __write_lock(rwlock_t *lock)
 "4:     or             %0, %3, %1\n"
 "      cas             [%2], %0, %1\n"
 "      cmp             %0, %1\n"
+"      membar          #StoreLoad | #StoreStore\n"
 "      bne,pn          %%icc, 1b\n"
-"       membar         #StoreLoad | #StoreStore\n"
+"       nop\n"
 "      .subsection     2\n"
 "2:    lduw            [%2], %0\n"
+"      membar          #LoadLoad\n"
 "      brnz,pt         %0, 2b\n"
-"       membar         #LoadLoad\n"
+"       nop\n"
 "      ba,a,pt         %%xcc, 4b\n"
 "      .previous"
        : "=&r" (tmp1), "=&r" (tmp2)
@@ -240,8 +251,9 @@ static int inline __write_trylock(rwlock_t *lock)
 "       or             %0, %4, %1\n"
 "      cas             [%3], %0, %1\n"
 "      cmp             %0, %1\n"
+"      membar          #StoreLoad | #StoreStore\n"
 "      bne,pn          %%icc, 1b\n"
-"       membar         #StoreLoad | #StoreStore\n"
+"       nop\n"
 "      mov             1, %2\n"
 "2:"
        : "=&r" (tmp1), "=&r" (tmp2), "=&r" (result)
@@ -270,37 +282,41 @@ typedef struct {
 #define RW_LOCK_UNLOCKED       (rwlock_t) { 0, 0, 0xff, { } }
 #define rwlock_init(lp) do { *(lp) = RW_LOCK_UNLOCKED; } while(0)
 
-extern void _do_read_lock(rwlock_t *rw, char *str);
-extern void _do_read_unlock(rwlock_t *rw, char *str);
-extern void _do_write_lock(rwlock_t *rw, char *str);
-extern void _do_write_unlock(rwlock_t *rw);
-extern int _do_write_trylock(rwlock_t *rw, char *str);
+extern void _do_read_lock(rwlock_t *rw, char *str, unsigned long caller);
+extern void _do_read_unlock(rwlock_t *rw, char *str, unsigned long caller);
+extern void _do_write_lock(rwlock_t *rw, char *str, unsigned long caller);
+extern void _do_write_unlock(rwlock_t *rw, unsigned long caller);
+extern int _do_write_trylock(rwlock_t *rw, char *str, unsigned long caller);
 
 #define _raw_read_lock(lock) \
 do {   unsigned long flags; \
        local_irq_save(flags); \
-       _do_read_lock(lock, "read_lock"); \
+       _do_read_lock(lock, "read_lock", \
+                     (unsigned long) __builtin_return_address(0)); \
        local_irq_restore(flags); \
 } while(0)
 
 #define _raw_read_unlock(lock) \
 do {   unsigned long flags; \
        local_irq_save(flags); \
-       _do_read_unlock(lock, "read_unlock"); \
+       _do_read_unlock(lock, "read_unlock", \
+                     (unsigned long) __builtin_return_address(0)); \
        local_irq_restore(flags); \
 } while(0)
 
 #define _raw_write_lock(lock) \
 do {   unsigned long flags; \
        local_irq_save(flags); \
-       _do_write_lock(lock, "write_lock"); \
+       _do_write_lock(lock, "write_lock", \
+                     (unsigned long) __builtin_return_address(0)); \
        local_irq_restore(flags); \
 } while(0)
 
 #define _raw_write_unlock(lock) \
 do {   unsigned long flags; \
        local_irq_save(flags); \
-       _do_write_unlock(lock); \
+       _do_write_unlock(lock, \
+                     (unsigned long) __builtin_return_address(0)); \
        local_irq_restore(flags); \
 } while(0)
 
@@ -308,7 +324,8 @@ do {        unsigned long flags; \
 ({     unsigned long flags; \
        int val; \
        local_irq_save(flags); \
-       val = _do_write_trylock(lock, "write_trylock"); \
+       val = _do_write_trylock(lock, "write_trylock", \
+                               (unsigned long) __builtin_return_address(0)); \
        local_irq_restore(flags); \
        val; \
 })