diff options
Diffstat (limited to 'arch/sh/include/asm')
| -rw-r--r-- | arch/sh/include/asm/fpu.h | 26 | ||||
| -rw-r--r-- | arch/sh/include/asm/processor_32.h | 3 | ||||
| -rw-r--r-- | arch/sh/include/asm/thread_info.h | 4 |
3 files changed, 19 insertions, 14 deletions
diff --git a/arch/sh/include/asm/fpu.h b/arch/sh/include/asm/fpu.h index bfd78e1..d7709c0 100644 --- a/arch/sh/include/asm/fpu.h +++ b/arch/sh/include/asm/fpu.h @@ -18,17 +18,14 @@ static inline void grab_fpu(struct pt_regs *regs) struct task_struct; -extern void save_fpu(struct task_struct *__tsk, struct pt_regs *regs); +extern void save_fpu(struct task_struct *__tsk); void fpu_state_restore(struct pt_regs *regs); #else +#define save_fpu(tsk) do { } while (0) #define release_fpu(regs) do { } while (0) #define grab_fpu(regs) do { } while (0) -static inline void save_fpu(struct task_struct *tsk, struct pt_regs *regs) -{ - clear_tsk_thread_flag(tsk, TIF_USEDFPU); -} #endif struct user_regset; @@ -40,21 +37,28 @@ extern int fpregs_get(struct task_struct *target, unsigned int pos, unsigned int count, void *kbuf, void __user *ubuf); +static inline void __unlazy_fpu(struct task_struct *tsk, struct pt_regs *regs) +{ + if (task_thread_info(tsk)->status & TS_USEDFPU) { + task_thread_info(tsk)->status &= ~TS_USEDFPU; + save_fpu(tsk); + release_fpu(regs); + } else + tsk->fpu_counter = 0; +} + static inline void unlazy_fpu(struct task_struct *tsk, struct pt_regs *regs) { preempt_disable(); - if (test_tsk_thread_flag(tsk, TIF_USEDFPU)) - save_fpu(tsk, regs); - else - tsk->fpu_counter = 0; + __unlazy_fpu(tsk, regs); preempt_enable(); } static inline void clear_fpu(struct task_struct *tsk, struct pt_regs *regs) { preempt_disable(); - if (test_tsk_thread_flag(tsk, TIF_USEDFPU)) { - clear_tsk_thread_flag(tsk, TIF_USEDFPU); + if (task_thread_info(tsk)->status & TS_USEDFPU) { + task_thread_info(tsk)->status &= ~TS_USEDFPU; release_fpu(regs); } preempt_enable(); diff --git a/arch/sh/include/asm/processor_32.h b/arch/sh/include/asm/processor_32.h index 9a87149..1f3d6fa 100644 --- a/arch/sh/include/asm/processor_32.h +++ b/arch/sh/include/asm/processor_32.h @@ -56,6 +56,7 @@ asmlinkage void __init sh_cpu_init(void); #define SR_DSP 0x00001000 #define SR_IMASK 0x000000f0 #define SR_FD 0x00008000 +#define SR_MD 0x40000000 /* * DSP structure and data @@ -136,7 +137,7 @@ struct mm_struct; extern void release_thread(struct task_struct *); /* Prepare to copy thread state - unlazy all lazy status */ -#define prepare_to_copy(tsk) do { } while (0) +void prepare_to_copy(struct task_struct *tsk); /* * create a kernel thread without removing it from tasklists diff --git a/arch/sh/include/asm/thread_info.h b/arch/sh/include/asm/thread_info.h index 23eeed8..1f3d927 100644 --- a/arch/sh/include/asm/thread_info.h +++ b/arch/sh/include/asm/thread_info.h @@ -51,6 +51,7 @@ struct thread_info { .task = &tsk, \ .exec_domain = &default_exec_domain, \ .flags = 0, \ + .status = 0, \ .cpu = 0, \ .preempt_count = INIT_PREEMPT_COUNT, \ .addr_limit = KERNEL_DS, \ @@ -117,7 +118,6 @@ extern void free_thread_info(struct thread_info *ti); #define TIF_SECCOMP 6 /* secure computing */ #define TIF_NOTIFY_RESUME 7 /* callback before returning to user */ #define TIF_SYSCALL_TRACEPOINT 8 /* for ftrace syscall instrumentation */ -#define TIF_USEDFPU 16 /* FPU was used by this task this quantum (SMP) */ #define TIF_POLLING_NRFLAG 17 /* true if poll_idle() is polling TIF_NEED_RESCHED */ #define TIF_MEMDIE 18 #define TIF_FREEZE 19 /* Freezing for suspend */ @@ -130,7 +130,6 @@ extern void free_thread_info(struct thread_info *ti); #define _TIF_SECCOMP (1 << TIF_SECCOMP) #define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME) #define _TIF_SYSCALL_TRACEPOINT (1 << TIF_SYSCALL_TRACEPOINT) -#define _TIF_USEDFPU (1 << TIF_USEDFPU) #define _TIF_POLLING_NRFLAG (1 << TIF_POLLING_NRFLAG) #define _TIF_FREEZE (1 << TIF_FREEZE) @@ -163,6 +162,7 @@ extern void free_thread_info(struct thread_info *ti); * have to worry about atomic accesses. */ #define TS_RESTORE_SIGMASK 0x0001 /* restore signal mask in do_signal() */ +#define TS_USEDFPU 0x0002 /* FPU used by this task this quantum */ #ifndef __ASSEMBLY__ #define HAVE_SET_RESTORE_SIGMASK 1 |
