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| author | Thomas Gleixner <tglx@linutronix.de> | 2010-02-17 20:27:37 +0300 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2010-02-17 20:28:05 +0300 |
| commit | b7e56edba4b02f2079042c326a8cd72a44635817 (patch) | |
| tree | b5042002e9747cd8fb1278d61f86d8b92a74c018 /arch/sh/include/asm/fpu.h | |
| parent | 13ca0fcaa33f6b1984c4111b6ec5df42689fea6f (diff) | |
| parent | b0483e78e5c4c9871fc5541875b3bc006846d46b (diff) | |
| download | linux-b7e56edba4b02f2079042c326a8cd72a44635817.tar.xz | |
Merge branch 'linus' into x86/mm
x86/mm is on 32-rc4 and missing the spinlock namespace changes which
are needed for further commits into this topic.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/sh/include/asm/fpu.h')
| -rw-r--r-- | arch/sh/include/asm/fpu.h | 26 |
1 files changed, 17 insertions, 9 deletions
diff --git a/arch/sh/include/asm/fpu.h b/arch/sh/include/asm/fpu.h index 1d3aee04b5cc..fb6bbb9b1cc8 100644 --- a/arch/sh/include/asm/fpu.h +++ b/arch/sh/include/asm/fpu.h @@ -18,16 +18,15 @@ 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) +#define fpu_state_restore(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; @@ -39,19 +38,28 @@ 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); + __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(); |