NothingOSS/android_kernel_msm-6.1_nothing_sm7635
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Merge master.kernel.org:/home/rmk/linux-2.6-arm

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This commit is contained in:
Linus Torvalds 2005-12-01 15:53:33 -08:00
commit ca98f825ea
6 changed files with 51 additions and 10 deletions
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5
include/asm-arm/semaphore.h
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@ -47,11 +47,6 @@ static inline void init_MUTEX_LOCKED(struct semaphore *sem)
sema_init(sem, 0);
}
static inline int sema_count(struct semaphore *sem)
{
return atomic_read(&sem->count);
}
/*
* special register calling convention
*/

26
include/asm-arm/spinlock.h
View file

@ -30,6 +30,9 @@ static inline void __raw_spin_lock(raw_spinlock_t *lock)
__asm__ __volatile__(
"1: ldrex %0, [%1]\n"
" teq %0, #0\n"
#ifdef CONFIG_CPU_32v6K
" wfene\n"
#endif
" strexeq %0, %2, [%1]\n"
" teqeq %0, #0\n"
" bne 1b"
@ -65,7 +68,11 @@ static inline void __raw_spin_unlock(raw_spinlock_t *lock)
smp_mb();
__asm__ __volatile__(
" str %1, [%0]"
" str %1, [%0]\n"
#ifdef CONFIG_CPU_32v6K
" mcr p15, 0, %1, c7, c10, 4\n" /* DSB */
" sev"
#endif
:
: "r" (&lock->lock), "r" (0)
: "cc");
@ -87,6 +94,9 @@ static inline void __raw_write_lock(raw_rwlock_t *rw)
__asm__ __volatile__(
"1: ldrex %0, [%1]\n"
" teq %0, #0\n"
#ifdef CONFIG_CPU_32v6K
" wfene\n"
#endif
" strexeq %0, %2, [%1]\n"
" teq %0, #0\n"
" bne 1b"
@ -122,7 +132,11 @@ static inline void __raw_write_unlock(raw_rwlock_t *rw)
smp_mb();
__asm__ __volatile__(
"str %1, [%0]"
"str %1, [%0]\n"
#ifdef CONFIG_CPU_32v6K
" mcr p15, 0, %1, c7, c10, 4\n" /* DSB */
" sev\n"
#endif
:
: "r" (&rw->lock), "r" (0)
: "cc");
@ -148,6 +162,9 @@ static inline void __raw_read_lock(raw_rwlock_t *rw)
"1: ldrex %0, [%2]\n"
" adds %0, %0, #1\n"
" strexpl %1, %0, [%2]\n"
#ifdef CONFIG_CPU_32v6K
" wfemi\n"
#endif
" rsbpls %0, %1, #0\n"
" bmi 1b"
: "=&r" (tmp), "=&r" (tmp2)
@ -169,6 +186,11 @@ static inline void __raw_read_unlock(raw_rwlock_t *rw)
" strex %1, %0, [%2]\n"
" teq %1, #0\n"
" bne 1b"
#ifdef CONFIG_CPU_32v6K
"\n cmp %0, #0\n"
" mcreq p15, 0, %0, c7, c10, 4\n"
" seveq"
#endif
: "=&r" (tmp), "=&r" (tmp2)
: "r" (&rw->lock)
: "cc");