Pavel,

On Mon, Sep 27 2021 at 17:44, Pavel Machek wrote:

On Mon 2021-09-27 17:35:02, Thomas Gleixner wrote:

quoted

Disabling stuff which is not working well with RT is very much a
solution in order to make progress.

We have surely more essential problems to solve than making leds blink
and if anyone cares enough about them, then this can be worked on in
parallel. That has been disabled on RT for ever and so far nobody
complained or cared enough about it.

Would you mind reading and responding to the rest of the email?

Sure. As Sebastian said, its not only the rwlock in led-triggers, it's
the whole call chain down to led_cdec->set_brightness() with a gazillion
of drivers and quite some of them take locks.

I'm not applying this.

That's fine with me, I just move arch/arm RT support to the very end of
my todo list then.

Thanks for your support!

       tglx