How to set SCHED_IDLE threading task in Linux ls1021a

[jiye]

Hi,

I want to set a daily task(fstrim) with lowest priority, I am deciding to use SCHED_IDLE thread to trigger this task.

As I am using a tiny image in my distro and i dont have cron in the linux user space.

How am I able to implement this and where (should it be in the linux kernel?)

How can i trigger it on a daily basis.

[yipingwang]

Please refer to c - Setting scheduling policy SCHED_IDLE or SCHED_BATCH fails with EINVAL (22) - Stack Overflow .

[jiye]

i dont have cron in the linux user space.

How can i trigger it on a daily basis.

[yipingwang]

You could download cron source code, cross compile it and copy to the target board.