Re: [PATCH v1 1/2] Enable balloon drivers to report inflated memory

[Alexander Atanasov]

Hello,

On 10.08.22 6:05, Muchun Song wrote:
> > On Aug 9, 2022, at 17:49, Alexander Atanasov <alexander.atanasov@xxxxxxxxxxxxx> wrote:
> >
> > Display reported in /proc/meminfo as:
>
> Hi,
>
> I am not sure if this is a right place (meminfo) to put this statistic in since
> it is the accounting from a specific driver. IIUC, this driver is only installed
> in a VM, then this accounting will always be zero if this driver is not installed.
> Is this possible to put it in a driver-specific sysfs file (maybe it is better)?
> Just some thoughts from me.

Yes, it is only used if run under hypervisor but it is under a config 
option for that reason.

There are several balloon drivers that will use it, not only one driver 
- virtio, VMWare, HyperV, XEN and possibly others. I made one as an 
example. Initially i worked on a patches for debugfs but discussion lead 
to put it into a centralized place.

--
Regards,
Alexander Atanasov