diff options
Diffstat (limited to 'arch/powerpc/include/asm/hw_irq.h')
| -rw-r--r-- | arch/powerpc/include/asm/hw_irq.h | 22 |
1 files changed, 16 insertions, 6 deletions
diff --git a/arch/powerpc/include/asm/hw_irq.h b/arch/powerpc/include/asm/hw_irq.h index 4c54db29104f..d046d9f3b777 100644 --- a/arch/powerpc/include/asm/hw_irq.h +++ b/arch/powerpc/include/asm/hw_irq.h @@ -49,6 +49,21 @@ extern void unknown_exception(struct pt_regs *regs); #ifdef CONFIG_PPC64 #include <asm/paca.h> +/* + * The "memory" clobber acts as both a compiler barrier + * for the critical section and as a clobber because + * we changed paca->soft_enabled + */ +static inline notrace void soft_enabled_set(unsigned long enable) +{ + asm volatile( + "stb %0,%1(13)" + : + : "r" (enable), + "i" (offsetof(struct paca_struct, soft_enabled)) + : "memory"); +} + static inline unsigned long arch_local_save_flags(void) { unsigned long flags; @@ -63,12 +78,7 @@ static inline unsigned long arch_local_save_flags(void) static inline void arch_local_irq_disable(void) { - asm volatile( - "stb %0,%1(13)" - : - : "r" (IRQS_DISABLED), - "i" (offsetof(struct paca_struct, soft_enabled)) - : "memory"); + soft_enabled_set(IRQS_DISABLED); } extern void arch_local_irq_restore(unsigned long); |