Re: Patch "sched/fair: sanitize vruntime of entity being placed" has been added to the 4.14-stable tree

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On Mon, Mar 06, 2023 at 04:31:57PM +0800, Zhang Qiao wrote:
> 
> 
> 在 2023/3/5 12:02, Sasha Levin 写道:
> > This is a note to let you know that I've just added the patch titled
> > 
> >     sched/fair: sanitize vruntime of entity being placed
> > 
> > to the 4.14-stable tree which can be found at:
> >     http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
> > 
> > The filename of the patch is:
> >      sched-fair-sanitize-vruntime-of-entity-being-placed.patch
> > and it can be found in the queue-4.14 subdirectory.
> > 
> > If you, or anyone else, feels it should not be added to the stable tree,
> > please let <stable@xxxxxxxxxxxxxxx> know about it.
> > 
> > 
> > 
> > commit 38247e1de3305a6ef644404ac818bc6129440eae
> 
> Hi,
> This patch has significant impact on the hackbench.throughput [1].
> Please don't backport this patch.
> 
> [1] https://lore.kernel.org/lkml/202302211553.9738f304-yujie.liu@xxxxxxxxx/T/#u

This link says it made hackbench.throughput faster, not slower, so why
would we NOT want it?

confused,

greg k-h



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