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scheduler: enable idle task to be executed more than once 

Some idle task like for example KWD draining needs
significant amount of time to finish their job.
For example, to drain whole history buffer 6 miliseconds
are needed in non-synchronied mode and as much as 2100
miliseconds in synchronized mode with period 400 frames.
Therefore it is vital to exit idle task when it itself
is in *idle* state and allow other tasks to do their
job.

Signed-off-by: Marcin Rajwa <marcin.rajwa@linux.intel.com>
This commit is contained in:
Marcin Rajwa 2019-06-08 14:37:54 +02:00 committed by Tomasz Lauda
parent 7347f8754a
commit c44a4549d4
1 changed files with 7 additions and 4 deletions
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11
src/lib/edf_schedule.c
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@ -501,6 +501,7 @@ static void edf_schedule_idle(void)
struct list_item *tlist;
struct list_item *clist;
struct task *task;
uint64_t ret;
/* Are we on passive level? */
if (arch_interrupt_get_level() != SOF_IRQ_PASSIVE_LEVEL)
@ -512,11 +513,13 @@ static void edf_schedule_idle(void)
/* run task if we find any queued */
if (task->state == SOF_TASK_STATE_QUEUED) {
task->func(task->data);
task->state = SOF_TASK_STATE_COMPLETED;
ret = task->func(task->data);
/* task done, remove it from the list */
list_item_del(clist);
if (ret == 0) {
/* task done, remove it from the list */
task->state = SOF_TASK_STATE_COMPLETED;
list_item_del(clist);
}
}
}
}