Re: [PATCH v0.9.1 3/6] sched/umcg: implement UMCG syscalls

Thomas Gleixner
2021-11-27T00:47:24Z

On Fri, Nov 26 2021 at 22:59, Peter Zijlstra wrote:
> On Fri, Nov 26, 2021 at 10:08:14PM +0100, Thomas Gleixner wrote:
>> > + if (timo)
>> > + hrtimer_sleeper_start_expires(&timeout, HRTIMER_MODE_ABS);
>> > +
>> > + freezable_schedule();
>>
>> You can replace the whole hrtimer foo with
>>
>> if (!schedule_hrtimeout_range_clock(timo ? &timo : NULL,
>> tsk->timer_slack_ns,
>> HRTIMER_MODE_ABS,
>> tsk->umcg_clock)) {
>> ret = -ETIMEOUT;
>> break;
>> }
>
> That seems to loose the freezable crud.. then again, since we're
> interruptible, that shouldn't matter. Lemme go do that.

We could add a freezable wrapper for that if necessary.

Thanks,

tglx