Re: sched_clock - microblaze

Steven J. Magnani
2010-04-15T15:06:16Z

Michal,

On Thu, 2010-04-15 at 16:55 +0200, Michal Simek wrote:

> Is unimplemented sched_clock the reason why ftrace not show fine grain time?
>
> Or is there any other thing which is wrong?
>

I think that's it. On my platform we have a free-running 1 MHz counter
so I implemented a platform sched_clock for that, and I get nice ftrace
times.

0) + 65.000 us | finish_task_switch();
0) | lock_sock_nested() {
0) + 52.000 us | local_bh_disable();
0) + 53.000 us | local_bh_enable();
0) ! 264.000 us | }

Steve