Re: [PATCH] fpga: dfl: fme: Fix cpu hotplug issue in performance reporting

[Greg KH]

On Tue, Jun 29, 2021 at 12:45:20PM +0530, kajoljain wrote:
> 
> 
> On 6/28/21 3:47 PM, Kajol Jain wrote:
> > The performance reporting driver added cpu hotplug
> > feature but it didn't add pmu migration call in cpu
> > offline function.
> > This can create an issue incase the current designated
> > cpu being used to collect fme pmu data got offline,
> > as based on current code we are not migrating fme pmu to
> > new target cpu. Because of that perf will still try to
> > fetch data from that offline cpu and hence we will not
> > get counter data.
> > 
> > Patch fixed this issue by adding pmu_migrate_context call
> > in fme_perf_offline_cpu function.
> > 
> 
> Adding stable@xxxxxxxxxxxxxxx in cc list as suggested by Moritz Fischer.


<formletter>

This is not the correct way to submit patches for inclusion in the
stable kernel tree.  Please read:
    https://www.kernel.org/doc/html/latest/process/stable-kernel-rules.html
for how to do this properly.

</formletter>