diff options
Diffstat (limited to 'arch/x86/include/asm/fpu-internal.h')
-rw-r--r-- | arch/x86/include/asm/fpu-internal.h | 27 |
1 files changed, 13 insertions, 14 deletions
diff --git a/arch/x86/include/asm/fpu-internal.h b/arch/x86/include/asm/fpu-internal.h index 579f7d0a399d..60d2c6f376f3 100644 --- a/arch/x86/include/asm/fpu-internal.h +++ b/arch/x86/include/asm/fpu-internal.h @@ -402,10 +402,9 @@ static inline void fpu_reset_state(struct fpu *fpu) */ typedef struct { int preload; } fpu_switch_t; -static inline fpu_switch_t switch_fpu_prepare(struct task_struct *old, struct task_struct *new, int cpu) +static inline fpu_switch_t +switch_fpu_prepare(struct fpu *old_fpu, struct fpu *new_fpu, int cpu) { - struct fpu *old_fpu = &old->thread.fpu; - struct fpu *new_fpu = &new->thread.fpu; fpu_switch_t fpu; /* @@ -413,33 +412,33 @@ static inline fpu_switch_t switch_fpu_prepare(struct task_struct *old, struct ta * or if the past 5 consecutive context-switches used math. */ fpu.preload = new_fpu->fpstate_active && - (use_eager_fpu() || new->thread.fpu.counter > 5); + (use_eager_fpu() || new_fpu->counter > 5); if (old_fpu->has_fpu) { - if (!fpu_save_init(&old->thread.fpu)) - old->thread.fpu.last_cpu = -1; + if (!fpu_save_init(old_fpu)) + old_fpu->last_cpu = -1; else - old->thread.fpu.last_cpu = cpu; + old_fpu->last_cpu = cpu; /* But leave fpu_fpregs_owner_ctx! */ - old->thread.fpu.has_fpu = 0; + old_fpu->has_fpu = 0; /* Don't change CR0.TS if we just switch! */ if (fpu.preload) { - new->thread.fpu.counter++; + new_fpu->counter++; __thread_set_has_fpu(new_fpu); - prefetch(new->thread.fpu.state); + prefetch(new_fpu->state); } else if (!use_eager_fpu()) stts(); } else { - old->thread.fpu.counter = 0; - old->thread.fpu.last_cpu = -1; + old_fpu->counter = 0; + old_fpu->last_cpu = -1; if (fpu.preload) { - new->thread.fpu.counter++; + new_fpu->counter++; if (fpu_want_lazy_restore(new_fpu, cpu)) fpu.preload = 0; else - prefetch(new->thread.fpu.state); + prefetch(new_fpu->state); __thread_fpu_begin(new_fpu); } } |