diff options
Diffstat (limited to 'arch/mips/include/asm/system.h')
| -rw-r--r-- | arch/mips/include/asm/system.h | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/arch/mips/include/asm/system.h b/arch/mips/include/asm/system.h index cd30f83235b..fcf5f98d90c 100644 --- a/arch/mips/include/asm/system.h +++ b/arch/mips/include/asm/system.h @@ -32,6 +32,9 @@ extern asmlinkage void *resume(void *last, void *next, void *next_ti); struct task_struct; +extern unsigned int ll_bit; +extern struct task_struct *ll_task; + #ifdef CONFIG_MIPS_MT_FPAFF /* @@ -63,11 +66,18 @@ do { \ #define __mips_mt_fpaff_switch_to(prev) do { (void) (prev); } while (0) #endif +#define __clear_software_ll_bit() \ +do { \ + if (!__builtin_constant_p(cpu_has_llsc) || !cpu_has_llsc) \ + ll_bit = 0; \ +} while (0) + #define switch_to(prev, next, last) \ do { \ __mips_mt_fpaff_switch_to(prev); \ if (cpu_has_dsp) \ __save_dsp(prev); \ + __clear_software_ll_bit(); \ (last) = resume(prev, next, task_thread_info(next)); \ } while (0) @@ -84,7 +94,7 @@ static inline unsigned long __xchg_u32(volatile int * m, unsigned int val) { __u32 retval; - if (cpu_has_llsc && R10000_LLSC_WAR) { + if (kernel_uses_llsc && R10000_LLSC_WAR) { unsigned long dummy; __asm__ __volatile__( @@ -99,7 +109,7 @@ static inline unsigned long __xchg_u32(volatile int * m, unsigned int val) : "=&r" (retval), "=m" (*m), "=&r" (dummy) : "R" (*m), "Jr" (val) : "memory"); - } else if (cpu_has_llsc) { + } else if (kernel_uses_llsc) { unsigned long dummy; __asm__ __volatile__( @@ -136,7 +146,7 @@ static inline __u64 __xchg_u64(volatile __u64 * m, __u64 val) { __u64 retval; - if (cpu_has_llsc && R10000_LLSC_WAR) { + if (kernel_uses_llsc && R10000_LLSC_WAR) { unsigned long dummy; __asm__ __volatile__( @@ -149,7 +159,7 @@ static inline __u64 __xchg_u64(volatile __u64 * m, __u64 val) : "=&r" (retval), "=m" (*m), "=&r" (dummy) : "R" (*m), "Jr" (val) : "memory"); - } else if (cpu_has_llsc) { + } else if (kernel_uses_llsc) { unsigned long dummy; __asm__ __volatile__( |