DEEPAK PRABHU wrote:
A snippet from schedulers/rtl_sched.c shows you how to mark a critical
region.
int rtl_task_init(RT_TASK *task, void (*fn)(int), int data, int
stack_size,
int priority,int fp)
{
int *st;
long interrupt_state;
if (task->magic == RT_TASK_MAGIC) {
return -EINVAL;
}
st = (int *) kmalloc(stack_size, GFP_KERNEL);
if (!st) {
return -ENOMEM;
}
task->priority = priority;
task->magic = RT_TASK_MAGIC;
task->state = RT_TASK_DORMANT;
task->stack_bottom = st;
task->stack = st + stack_size / sizeof(int);
if(fp){
rtl_fpu_task_init(task,rtl_current);
}
else task->uses_fp = 0;
x86_init_stack(task,data,rt_startup);
---> rtl_no_interrupts(interrupt_state);
task->next = rt_tasks;
rt_tasks = task;
---> rtl_restore_interrupts(interrupt_state);
return 0;
}
Hope this helps
Regards, Phil Wilshire
>
> Hello
>
> We are in need of marking critical regions in drivers running under
> rtlinux and would like to know advice from anybody who has worked on
> this.
>
> Deepak
>
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