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-rw-r--r--include/asm-sparc/spinlock.h140
-rw-r--r--include/asm-sparc/spinlock_types.h20
2 files changed, 41 insertions, 119 deletions
diff --git a/include/asm-sparc/spinlock.h b/include/asm-sparc/spinlock.h
index 0cbd87ad4912..111727a2bb4e 100644
--- a/include/asm-sparc/spinlock.h
+++ b/include/asm-sparc/spinlock.h
@@ -12,96 +12,12 @@
#include <asm/psr.h>
-#ifdef CONFIG_DEBUG_SPINLOCK
-struct _spinlock_debug {
- unsigned char lock;
- unsigned long owner_pc;
-#ifdef CONFIG_PREEMPT
- unsigned int break_lock;
-#endif
-};
-typedef struct _spinlock_debug spinlock_t;
-
-#define SPIN_LOCK_UNLOCKED (spinlock_t) { 0, 0 }
-#define spin_lock_init(lp) do { *(lp)= SPIN_LOCK_UNLOCKED; } while(0)
-#define spin_is_locked(lp) (*((volatile unsigned char *)(&((lp)->lock))) != 0)
-#define spin_unlock_wait(lp) do { barrier(); } while(*(volatile unsigned char *)(&(lp)->lock))
-
-extern void _do_spin_lock(spinlock_t *lock, char *str);
-extern int _spin_trylock(spinlock_t *lock);
-extern void _do_spin_unlock(spinlock_t *lock);
-
-#define _raw_spin_trylock(lp) _spin_trylock(lp)
-#define _raw_spin_lock(lock) _do_spin_lock(lock, "spin_lock")
-#define _raw_spin_unlock(lock) _do_spin_unlock(lock)
-
-struct _rwlock_debug {
- volatile unsigned int lock;
- unsigned long owner_pc;
- unsigned long reader_pc[NR_CPUS];
-#ifdef CONFIG_PREEMPT
- unsigned int break_lock;
-#endif
-};
-typedef struct _rwlock_debug rwlock_t;
-
-#define RW_LOCK_UNLOCKED (rwlock_t) { 0, 0, {0} }
-
-#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);
-
-#define _raw_read_lock(lock) \
-do { unsigned long flags; \
- local_irq_save(flags); \
- _do_read_lock(lock, "read_lock"); \
- 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"); \
- 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"); \
- local_irq_restore(flags); \
-} while(0)
-
-#define _raw_write_unlock(lock) \
-do { unsigned long flags; \
- local_irq_save(flags); \
- _do_write_unlock(lock); \
- local_irq_restore(flags); \
-} while(0)
-
-#else /* !CONFIG_DEBUG_SPINLOCK */
-
-typedef struct {
- unsigned char lock;
-#ifdef CONFIG_PREEMPT
- unsigned int break_lock;
-#endif
-} spinlock_t;
-
-#define SPIN_LOCK_UNLOCKED (spinlock_t) { 0 }
-
-#define spin_lock_init(lock) (*((unsigned char *)(lock)) = 0)
-#define spin_is_locked(lock) (*((volatile unsigned char *)(lock)) != 0)
+#define __raw_spin_is_locked(lock) (*((volatile unsigned char *)(lock)) != 0)
-#define spin_unlock_wait(lock) \
-do { \
- barrier(); \
-} while(*((volatile unsigned char *)lock))
+#define __raw_spin_unlock_wait(lock) \
+ do { while (__raw_spin_is_locked(lock)) cpu_relax(); } while (0)
-extern __inline__ void _raw_spin_lock(spinlock_t *lock)
+extern __inline__ void __raw_spin_lock(raw_spinlock_t *lock)
{
__asm__ __volatile__(
"\n1:\n\t"
@@ -121,7 +37,7 @@ extern __inline__ void _raw_spin_lock(spinlock_t *lock)
: "g2", "memory", "cc");
}
-extern __inline__ int _raw_spin_trylock(spinlock_t *lock)
+extern __inline__ int __raw_spin_trylock(raw_spinlock_t *lock)
{
unsigned int result;
__asm__ __volatile__("ldstub [%1], %0"
@@ -131,7 +47,7 @@ extern __inline__ int _raw_spin_trylock(spinlock_t *lock)
return (result == 0);
}
-extern __inline__ void _raw_spin_unlock(spinlock_t *lock)
+extern __inline__ void __raw_spin_unlock(raw_spinlock_t *lock)
{
__asm__ __volatile__("stb %%g0, [%0]" : : "r" (lock) : "memory");
}
@@ -147,23 +63,11 @@ extern __inline__ void _raw_spin_unlock(spinlock_t *lock)
*
* XXX This might create some problems with my dual spinlock
* XXX scheme, deadlocks etc. -DaveM
- */
-typedef struct {
- volatile unsigned int lock;
-#ifdef CONFIG_PREEMPT
- unsigned int break_lock;
-#endif
-} rwlock_t;
-
-#define RW_LOCK_UNLOCKED (rwlock_t) { 0 }
-
-#define rwlock_init(lp) do { *(lp)= RW_LOCK_UNLOCKED; } while(0)
-
-
-/* Sort of like atomic_t's on Sparc, but even more clever.
+ *
+ * Sort of like atomic_t's on Sparc, but even more clever.
*
* ------------------------------------
- * | 24-bit counter | wlock | rwlock_t
+ * | 24-bit counter | wlock | raw_rwlock_t
* ------------------------------------
* 31 8 7 0
*
@@ -174,9 +78,9 @@ typedef struct {
*
* Unfortunately this scheme limits us to ~16,000,000 cpus.
*/
-extern __inline__ void _read_lock(rwlock_t *rw)
+extern __inline__ void __read_lock(raw_rwlock_t *rw)
{
- register rwlock_t *lp asm("g1");
+ register raw_rwlock_t *lp asm("g1");
lp = rw;
__asm__ __volatile__(
"mov %%o7, %%g4\n\t"
@@ -187,16 +91,16 @@ extern __inline__ void _read_lock(rwlock_t *rw)
: "g2", "g4", "memory", "cc");
}
-#define _raw_read_lock(lock) \
+#define __raw_read_lock(lock) \
do { unsigned long flags; \
local_irq_save(flags); \
- _read_lock(lock); \
+ __raw_read_lock(lock); \
local_irq_restore(flags); \
} while(0)
-extern __inline__ void _read_unlock(rwlock_t *rw)
+extern __inline__ void __read_unlock(raw_rwlock_t *rw)
{
- register rwlock_t *lp asm("g1");
+ register raw_rwlock_t *lp asm("g1");
lp = rw;
__asm__ __volatile__(
"mov %%o7, %%g4\n\t"
@@ -207,16 +111,16 @@ extern __inline__ void _read_unlock(rwlock_t *rw)
: "g2", "g4", "memory", "cc");
}
-#define _raw_read_unlock(lock) \
+#define __raw_read_unlock(lock) \
do { unsigned long flags; \
local_irq_save(flags); \
- _read_unlock(lock); \
+ __raw_read_unlock(lock); \
local_irq_restore(flags); \
} while(0)
-extern __inline__ void _raw_write_lock(rwlock_t *rw)
+extern __inline__ void __raw_write_lock(raw_rwlock_t *rw)
{
- register rwlock_t *lp asm("g1");
+ register raw_rwlock_t *lp asm("g1");
lp = rw;
__asm__ __volatile__(
"mov %%o7, %%g4\n\t"
@@ -227,11 +131,9 @@ extern __inline__ void _raw_write_lock(rwlock_t *rw)
: "g2", "g4", "memory", "cc");
}
-#define _raw_write_unlock(rw) do { (rw)->lock = 0; } while(0)
-
-#endif /* CONFIG_DEBUG_SPINLOCK */
+#define __raw_write_unlock(rw) do { (rw)->lock = 0; } while(0)
-#define _raw_spin_lock_flags(lock, flags) _raw_spin_lock(lock)
+#define __raw_spin_lock_flags(lock, flags) __raw_spin_lock(lock)
#endif /* !(__ASSEMBLY__) */
diff --git a/include/asm-sparc/spinlock_types.h b/include/asm-sparc/spinlock_types.h
new file mode 100644
index 000000000000..0a0fb116c4ec
--- /dev/null
+++ b/include/asm-sparc/spinlock_types.h
@@ -0,0 +1,20 @@
+#ifndef __SPARC_SPINLOCK_TYPES_H
+#define __SPARC_SPINLOCK_TYPES_H
+
+#ifndef __LINUX_SPINLOCK_TYPES_H
+# error "please don't include this file directly"
+#endif
+
+typedef struct {
+ unsigned char lock;
+} raw_spinlock_t;
+
+#define __RAW_SPIN_LOCK_UNLOCKED { 0 }
+
+typedef struct {
+ volatile unsigned int lock;
+} raw_rwlock_t;
+
+#define __RAW_RW_LOCK_UNLOCKED { 0 }
+
+#endif
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-03 16:35:20 +0100