Re: [net-next 1/3] psp: Support resetting statistics on a device

[Akhilesh Samineni]

On Thu, Mar 5, 2026 at 7:55 PM Willem de Bruijn
<willemdebruijn.kernel@xxxxxxxxx> wrote:
>
> Akhilesh Samineni wrote:
> > On Tue, Mar 3, 2026 at 2:45 AM Willem de Bruijn
> > <willemdebruijn.kernel@xxxxxxxxx> wrote:
> > >
> > > Akhilesh Samineni wrote:
> > > > Drivers may need to reset per-device PSP statistics to zero.
> > >
> > > The series does not include rationale why this may be needed.
> > >
> > > What makes PSP counters special in this regard?
> > >
> >
> > The PSP supports dynamic administrative states, allowing it to be
> > enabled or disabled during runtime. Currently, statistics are
> > persistent across these state transitions, which can lead to baseline
> > drift and complicate telemetry analysis.
>
> How is this dynamic enable/disable configured, and can stats reset be
> part of that, rather than a separate API?
>

Instead of bundling the statistics reset with the transition to the
disabled mode, we considered providing a separate reset operation to
give users the flexibility to clear counters without toggling the PSP
state.

> > This patch introduces a statistics reset mechanism to allow userspace
> > to clear accumulated counters. This is essential for establishing a
> > deterministic baseline when re-enabling the device, ensuring that
> > performance metrics and error counters reflect only the current device
> > state.

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