Re: [PATCH] sched/core: Fix reset-on-fork from RT with uclamp

[Quentin Perret <qperret@google.com>]

On Tuesday 14 Apr 2020 at 12:21:28 (-0400), Joel Fernandes wrote:
> Shouldn't this be conditional on p->sched_reset_on_fork instead of deleting
> the code?

Right, it's not obvious from the diff, but this code _is_ conditional on
p->sched_reset_on_fork already. This is what the whole function looks
like with my patch applied:

---8<---
static void uclamp_fork(struct task_struct *p)
{
        enum uclamp_id clamp_id;

        for_each_clamp_id(clamp_id)
                p->uclamp[clamp_id].active = false;

        if (likely(!p->sched_reset_on_fork))
                return;

        for_each_clamp_id(clamp_id) {
                unsigned int clamp_value = uclamp_none(clamp_id);

                uclamp_se_set(&p->uclamp_req[clamp_id], clamp_value, false);
        }
}
--->8---

Thanks,
Quentin