diff options
| author | Vineet Gupta <vgupta@synopsys.com> | 2013-01-18 15:12:18 +0530 |
|---|---|---|
| committer | Vineet Gupta <vgupta@synopsys.com> | 2013-02-11 20:00:38 +0530 |
| commit | bf90e1eab682dcb79b7765989fb65835ce9d6165 (patch) | |
| tree | cb1bb4364862d878e1d361d371f8392d08f606d7 /arch/arc/include/asm/switch_to.h | |
| parent | 4adeefe161a74369e44cc8e663f240ece0470dc3 (diff) | |
ARC: Process-creation/scheduling/idle-loop
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Cc: Al Viro <viro@ZenIV.linux.org.uk>
Cc: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/arc/include/asm/switch_to.h')
| -rw-r--r-- | arch/arc/include/asm/switch_to.h | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/arch/arc/include/asm/switch_to.h b/arch/arc/include/asm/switch_to.h new file mode 100644 index 000000000000..1b171ab5fec0 --- /dev/null +++ b/arch/arc/include/asm/switch_to.h @@ -0,0 +1,41 @@ +/* + * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef _ASM_ARC_SWITCH_TO_H +#define _ASM_ARC_SWITCH_TO_H + +#ifndef __ASSEMBLY__ + +#include <linux/sched.h> + +#ifdef CONFIG_ARC_FPU_SAVE_RESTORE + +extern void fpu_save_restore(struct task_struct *p, struct task_struct *n); +#define ARC_FPU_PREV(p, n) fpu_save_restore(p, n) +#define ARC_FPU_NEXT(t) + +#else + +#define ARC_FPU_PREV(p, n) +#define ARC_FPU_NEXT(n) + +#endif /* !CONFIG_ARC_FPU_SAVE_RESTORE */ + +struct task_struct *__switch_to(struct task_struct *p, struct task_struct *n); + +#define switch_to(prev, next, last) \ +do { \ + ARC_FPU_PREV(prev, next); \ + last = __switch_to(prev, next);\ + ARC_FPU_NEXT(next); \ + mb(); \ +} while (0) + +#endif + +#endif |