mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-20 19:23:57 +08:00
3bed8d6746
Disintegrate asm/system.h for Blackfin. Signed-off-by: David Howells <dhowells@redhat.com> cc: uclinux-dist-devel@blackfin.uclinux.org Signed-off-by: Bob Liu <lliubbo@gmail.com>
40 lines
997 B
C
40 lines
997 B
C
/*
|
|
* Copyright 2004-2009 Analog Devices Inc.
|
|
* Tony Kou (tonyko@lineo.ca)
|
|
*
|
|
* Licensed under the GPL-2 or later
|
|
*/
|
|
|
|
#ifndef _BLACKFIN_SWITCH_TO_H
|
|
#define _BLACKFIN_SWITCH_TO_H
|
|
|
|
#define prepare_to_switch() do { } while(0)
|
|
|
|
/*
|
|
* switch_to(n) should switch tasks to task ptr, first checking that
|
|
* ptr isn't the current task, in which case it does nothing.
|
|
*/
|
|
|
|
#include <asm/l1layout.h>
|
|
#include <asm/mem_map.h>
|
|
|
|
asmlinkage struct task_struct *resume(struct task_struct *prev, struct task_struct *next);
|
|
|
|
#ifndef CONFIG_SMP
|
|
#define switch_to(prev,next,last) \
|
|
do { \
|
|
memcpy (&task_thread_info(prev)->l1_task_info, L1_SCRATCH_TASK_INFO, \
|
|
sizeof *L1_SCRATCH_TASK_INFO); \
|
|
memcpy (L1_SCRATCH_TASK_INFO, &task_thread_info(next)->l1_task_info, \
|
|
sizeof *L1_SCRATCH_TASK_INFO); \
|
|
(last) = resume (prev, next); \
|
|
} while (0)
|
|
#else
|
|
#define switch_to(prev, next, last) \
|
|
do { \
|
|
(last) = resume(prev, next); \
|
|
} while (0)
|
|
#endif
|
|
|
|
#endif /* _BLACKFIN_SWITCH_TO_H */
|