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authorRabin Vincent <rabin@rab.in>2015-02-19 17:35:28 +0100
committerJesper Nilsson <jespern@axis.com>2015-03-25 10:55:10 +0100
commit47a8f6fb349c977ff752f979b159aef96a0bb352 (patch)
tree53c52b00d97eb5b0e284b67d66f09ed7ab9a5744 /arch/cris/include/arch-v32
parent06aca92424c2a53a9e26cb81c1d6a829af9491b8 (diff)
downloadblackbird-op-linux-47a8f6fb349c977ff752f979b159aef96a0bb352.tar.gz
blackbird-op-linux-47a8f6fb349c977ff752f979b159aef96a0bb352.zip
CRIS: remove SMP code
The CRIS SMP code cannot be built since there is no (and appears to never have been) a CONFIG_SMP Kconfig option in arch/cris/. Remove it. Signed-off-by: Rabin Vincent <rabin@rab.in> Signed-off-by: Jesper Nilsson <jespern@axis.com>
Diffstat (limited to 'arch/cris/include/arch-v32')
-rw-r--r--arch/cris/include/arch-v32/arch/atomic.h28
-rw-r--r--arch/cris/include/arch-v32/arch/spinlock.h131
2 files changed, 0 insertions, 159 deletions
diff --git a/arch/cris/include/arch-v32/arch/atomic.h b/arch/cris/include/arch-v32/arch/atomic.h
index 852ceff8013f..9c7d105b894b 100644
--- a/arch/cris/include/arch-v32/arch/atomic.h
+++ b/arch/cris/include/arch-v32/arch/atomic.h
@@ -1,36 +1,8 @@
#ifndef __ASM_CRIS_ARCH_ATOMIC__
#define __ASM_CRIS_ARCH_ATOMIC__
-#include <linux/spinlock_types.h>
-
-extern void cris_spin_unlock(void *l, int val);
-extern void cris_spin_lock(void *l);
-extern int cris_spin_trylock(void* l);
-
-#ifndef CONFIG_SMP
#define cris_atomic_save(addr, flags) local_irq_save(flags);
#define cris_atomic_restore(addr, flags) local_irq_restore(flags);
-#else
-
-extern spinlock_t cris_atomic_locks[];
-#define LOCK_COUNT 128
-#define HASH_ADDR(a) (((int)a) & 127)
-
-#define cris_atomic_save(addr, flags) \
- local_irq_save(flags); \
- cris_spin_lock((void *)&cris_atomic_locks[HASH_ADDR(addr)].raw_lock.slock);
-
-#define cris_atomic_restore(addr, flags) \
- { \
- spinlock_t *lock = (void*)&cris_atomic_locks[HASH_ADDR(addr)]; \
- __asm__ volatile ("move.d %1,%0" \
- : "=m" (lock->raw_lock.slock) \
- : "r" (1) \
- : "memory"); \
- local_irq_restore(flags); \
- }
-
-#endif
#endif
diff --git a/arch/cris/include/arch-v32/arch/spinlock.h b/arch/cris/include/arch-v32/arch/spinlock.h
deleted file mode 100644
index f13275522f4d..000000000000
--- a/arch/cris/include/arch-v32/arch/spinlock.h
+++ /dev/null
@@ -1,131 +0,0 @@
-#ifndef __ASM_ARCH_SPINLOCK_H
-#define __ASM_ARCH_SPINLOCK_H
-
-#include <linux/spinlock_types.h>
-
-#define RW_LOCK_BIAS 0x01000000
-
-extern void cris_spin_unlock(void *l, int val);
-extern void cris_spin_lock(void *l);
-extern int cris_spin_trylock(void *l);
-
-static inline int arch_spin_is_locked(arch_spinlock_t *x)
-{
- return *(volatile signed char *)(&(x)->slock) <= 0;
-}
-
-static inline void arch_spin_unlock(arch_spinlock_t *lock)
-{
- __asm__ volatile ("move.d %1,%0" \
- : "=m" (lock->slock) \
- : "r" (1) \
- : "memory");
-}
-
-static inline void arch_spin_unlock_wait(arch_spinlock_t *lock)
-{
- while (arch_spin_is_locked(lock))
- cpu_relax();
-}
-
-static inline int arch_spin_trylock(arch_spinlock_t *lock)
-{
- return cris_spin_trylock((void *)&lock->slock);
-}
-
-static inline void arch_spin_lock(arch_spinlock_t *lock)
-{
- cris_spin_lock((void *)&lock->slock);
-}
-
-static inline void
-arch_spin_lock_flags(arch_spinlock_t *lock, unsigned long flags)
-{
- arch_spin_lock(lock);
-}
-
-/*
- * Read-write spinlocks, allowing multiple readers
- * but only one writer.
- *
- * NOTE! it is quite common to have readers in interrupts
- * but no interrupt writers. For those circumstances we
- * can "mix" irq-safe locks - any writer needs to get a
- * irq-safe write-lock, but readers can get non-irqsafe
- * read-locks.
- *
- */
-
-static inline int arch_read_can_lock(arch_rwlock_t *x)
-{
- return (int)(x)->lock > 0;
-}
-
-static inline int arch_write_can_lock(arch_rwlock_t *x)
-{
- return (x)->lock == RW_LOCK_BIAS;
-}
-
-static inline void arch_read_lock(arch_rwlock_t *rw)
-{
- arch_spin_lock(&rw->slock);
- while (rw->lock == 0);
- rw->lock--;
- arch_spin_unlock(&rw->slock);
-}
-
-static inline void arch_write_lock(arch_rwlock_t *rw)
-{
- arch_spin_lock(&rw->slock);
- while (rw->lock != RW_LOCK_BIAS);
- rw->lock = 0;
- arch_spin_unlock(&rw->slock);
-}
-
-static inline void arch_read_unlock(arch_rwlock_t *rw)
-{
- arch_spin_lock(&rw->slock);
- rw->lock++;
- arch_spin_unlock(&rw->slock);
-}
-
-static inline void arch_write_unlock(arch_rwlock_t *rw)
-{
- arch_spin_lock(&rw->slock);
- while (rw->lock != RW_LOCK_BIAS);
- rw->lock = RW_LOCK_BIAS;
- arch_spin_unlock(&rw->slock);
-}
-
-static inline int arch_read_trylock(arch_rwlock_t *rw)
-{
- int ret = 0;
- arch_spin_lock(&rw->slock);
- if (rw->lock != 0) {
- rw->lock--;
- ret = 1;
- }
- arch_spin_unlock(&rw->slock);
- return ret;
-}
-
-static inline int arch_write_trylock(arch_rwlock_t *rw)
-{
- int ret = 0;
- arch_spin_lock(&rw->slock);
- if (rw->lock == RW_LOCK_BIAS) {
- rw->lock = 0;
- ret = 1;
- }
- arch_spin_unlock(&rw->slock);
- return ret;
-}
-
-#define _raw_read_lock_flags(lock, flags) _raw_read_lock(lock)
-#define _raw_write_lock_flags(lock, flags) _raw_write_lock(lock)
-
-#define arch_spin_relax(lock) cpu_relax()
-#define arch_read_relax(lock) cpu_relax()
-#define arch_write_relax(lock) cpu_relax()
-
-#endif /* __ASM_ARCH_SPINLOCK_H */
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