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sh: Fix up the FPU emulation build.

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Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Paul Mundt 2009-11-25 12:07:31 +09:00
parent b9e39c89a9
commit 6ba653830c
2 changed files with 4 additions and 7 deletions
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1
arch/sh/include/asm/fpu.h
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@ -25,6 +25,7 @@ void fpu_state_restore(struct pt_regs *regs);
#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)
#endif

10
arch/sh/kernel/process_32.c
View File

@ -300,13 +300,11 @@ __switch_to(struct task_struct *prev, struct task_struct *next)
{
struct thread_struct *next_t = &next->thread;
#if defined(CONFIG_SH_FPU)
unlazy_fpu(prev, task_pt_regs(prev));
/* we're going to use this soon, after a few expensive things */
if (next->fpu_counter > 5)
prefetch(&next_t->fpu.hard);
#endif
#ifdef CONFIG_MMU
/*
@ -337,15 +335,13 @@ __switch_to(struct task_struct *prev, struct task_struct *next)
#endif
}
#if defined(CONFIG_SH_FPU)
/* If the task has used fpu the last 5 timeslices, just do a full
/*
* If the task has used fpu the last 5 timeslices, just do a full
* restore of the math state immediately to avoid the trap; the
* chances of needing FPU soon are obviously high now
*/
if (next->fpu_counter > 5) {
if (next->fpu_counter > 5)
fpu_state_restore(task_pt_regs(next));
}
#endif
return prev;
}