diff options
Diffstat (limited to 'arch/powerpc/lib/locks.c')
| -rw-r--r-- | arch/powerpc/lib/locks.c | 41 |
1 files changed, 13 insertions, 28 deletions
diff --git a/arch/powerpc/lib/locks.c b/arch/powerpc/lib/locks.c index 2a912f411eb..0c9c8d7d073 100644 --- a/arch/powerpc/lib/locks.c +++ b/arch/powerpc/lib/locks.c @@ -12,42 +12,34 @@ * 2 of the License, or (at your option) any later version. */ -#include <linux/config.h> #include <linux/kernel.h> #include <linux/spinlock.h> -#include <linux/module.h> +#include <linux/export.h> #include <linux/stringify.h> #include <linux/smp.h> /* waiting for a spinlock... */ -#if defined(CONFIG_PPC_SPLPAR) || defined(CONFIG_PPC_ISERIES) +#if defined(CONFIG_PPC_SPLPAR) #include <asm/hvcall.h> -#include <asm/iseries/hv_call.h> +#include <asm/smp.h> -void __spin_yield(raw_spinlock_t *lock) +void __spin_yield(arch_spinlock_t *lock) { unsigned int lock_value, holder_cpu, yield_count; - struct paca_struct *holder_paca; lock_value = lock->slock; if (lock_value == 0) return; holder_cpu = lock_value & 0xffff; BUG_ON(holder_cpu >= NR_CPUS); - holder_paca = &paca[holder_cpu]; - yield_count = holder_paca->lppaca.yield_count; + yield_count = be32_to_cpu(lppaca_of(holder_cpu).yield_count); if ((yield_count & 1) == 0) return; /* virtual cpu is currently running */ rmb(); if (lock->slock != lock_value) return; /* something has changed */ -#ifdef CONFIG_PPC_ISERIES - HvCall2(HvCallBaseYieldProcessor, HvCall_YieldToProc, - ((u64)holder_cpu << 32) | yield_count); -#else - plpar_hcall_norets(H_CONFER, get_hard_smp_processor_id(holder_cpu), - yield_count); -#endif + plpar_hcall_norets(H_CONFER, + get_hard_smp_processor_id(holder_cpu), yield_count); } /* @@ -55,35 +47,28 @@ void __spin_yield(raw_spinlock_t *lock) * This turns out to be the same for read and write locks, since * we only know the holder if it is write-locked. */ -void __rw_yield(raw_rwlock_t *rw) +void __rw_yield(arch_rwlock_t *rw) { int lock_value; unsigned int holder_cpu, yield_count; - struct paca_struct *holder_paca; lock_value = rw->lock; if (lock_value >= 0) return; /* no write lock at present */ holder_cpu = lock_value & 0xffff; BUG_ON(holder_cpu >= NR_CPUS); - holder_paca = &paca[holder_cpu]; - yield_count = holder_paca->lppaca.yield_count; + yield_count = be32_to_cpu(lppaca_of(holder_cpu).yield_count); if ((yield_count & 1) == 0) return; /* virtual cpu is currently running */ rmb(); if (rw->lock != lock_value) return; /* something has changed */ -#ifdef CONFIG_PPC_ISERIES - HvCall2(HvCallBaseYieldProcessor, HvCall_YieldToProc, - ((u64)holder_cpu << 32) | yield_count); -#else - plpar_hcall_norets(H_CONFER, get_hard_smp_processor_id(holder_cpu), - yield_count); -#endif + plpar_hcall_norets(H_CONFER, + get_hard_smp_processor_id(holder_cpu), yield_count); } #endif -void __raw_spin_unlock_wait(raw_spinlock_t *lock) +void arch_spin_unlock_wait(arch_spinlock_t *lock) { while (lock->slock) { HMT_low(); @@ -93,4 +78,4 @@ void __raw_spin_unlock_wait(raw_spinlock_t *lock) HMT_medium(); } -EXPORT_SYMBOL(__raw_spin_unlock_wait); +EXPORT_SYMBOL(arch_spin_unlock_wait); |