Re: [RFC PATCH] sched/eevdf: Return leftmost entity in pick_eevdf() if no eligible entity is found

From: Peter Zijlstra
Date: Fri Apr 19 2024 - 12:24:57 EST


On Fri, Apr 19, 2024 at 06:04:25PM +0800, Chen Yu wrote:

> > Also, could you put a few words in on how often these clips are hit? I
> > suspect it's fairly rare (but crucial when it does).
>
> Everytime it happens a subsequent NULL pointer exception usually happens.
> The trace data was posted here:

That was not the question. Suppose I put a printk whenever the clamp()
actually changes the value, do I get a stormflood of output, or do I get
a sporadic blip.