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Commit 6ba65383 authored by Paul Mundt's avatar Paul Mundt
Browse files

sh: Fix up the FPU emulation build. 



Signed-off-by: default avatarPaul Mundt <lethal@linux-sh.org>
parent b9e39c89

arch/sh/include/asm/fpu.h

+1 −0
Original line number Diff line number Diff line
@@ -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

arch/sh/kernel/process_32.c

+3 −7
Original line number Diff line number Diff line
@@ -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;

}