diff options
Diffstat (limited to 'arch/arc/kernel/ctx_sw.c')
| -rw-r--r-- | arch/arc/kernel/ctx_sw.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/arc/kernel/ctx_sw.c b/arch/arc/kernel/ctx_sw.c index fbf739cbaf7..60844dac613 100644 --- a/arch/arc/kernel/ctx_sw.c +++ b/arch/arc/kernel/ctx_sw.c @@ -58,7 +58,18 @@ __switch_to(struct task_struct *prev_task, struct task_struct *next_task) * For SMP extra work to get to &_current_task[cpu] * (open coded SET_CURR_TASK_ON_CPU) */ +#ifndef CONFIG_SMP "st %2, [@_current_task] \n\t" +#else + "lr r24, [identity] \n\t" + "lsr r24, r24, 8 \n\t" + "bmsk r24, r24, 7 \n\t" + "add2 r24, @_current_task, r24 \n\t" + "st %2, [r24] \n\t" +#endif +#ifdef CONFIG_ARC_CURR_IN_REG + "mov r25, %2 \n\t" +#endif /* get ksp of incoming task from tsk->thread.ksp */ "ld.as sp, [%2, %1] \n\t" |