Re: [PATCH v7 clocksource] Do not mark clocks unstable due to delays for v5.13

2021-04-11 Thread Paul E. McKenney
On Sun, Apr 11, 2021 at 12:58:31PM +0200, Thomas Gleixner wrote: > On Sat, Apr 10 2021 at 16:26, Paul E. McKenney wrote: > > On Sat, Apr 10, 2021 at 10:01:58AM +0200, Thomas Gleixner wrote: > >> On Fri, Apr 02 2021 at 15:48, Paul E. McKenney wrote: > >> I buy the vCPU preemption part and TBH

Re: [PATCH v7 clocksource] Do not mark clocks unstable due to delays for v5.13

2021-04-11 Thread Thomas Gleixner
On Sat, Apr 10 2021 at 16:26, Paul E. McKenney wrote: > On Sat, Apr 10, 2021 at 10:01:58AM +0200, Thomas Gleixner wrote: >> On Fri, Apr 02 2021 at 15:48, Paul E. McKenney wrote: >> I buy the vCPU preemption part and TBH guests should not have that >> watchdog thing active at all for exactly this

Re: [PATCH v7 clocksource] Do not mark clocks unstable due to delays for v5.13

2021-04-10 Thread Paul E. McKenney
On Sat, Apr 10, 2021 at 10:01:58AM +0200, Thomas Gleixner wrote: > On Fri, Apr 02 2021 at 15:48, Paul E. McKenney wrote: > > Hello! > > > > If there is a sufficient delay between reading the watchdog clock and the > > clock under test, the clock under test will be marked unstable through no > >

Re: [PATCH v7 clocksource] Do not mark clocks unstable due to delays for v5.13

2021-04-10 Thread Thomas Gleixner
On Fri, Apr 02 2021 at 15:48, Paul E. McKenney wrote: > Hello! > > If there is a sufficient delay between reading the watchdog clock and the > clock under test, the clock under test will be marked unstable through no > fault of its own. This series checks for this, doing limited retries > to get

[PATCH v7 clocksource] Do not mark clocks unstable due to delays for v5.13

2021-04-02 Thread Paul E. McKenney
Hello! If there is a sufficient delay between reading the watchdog clock and the clock under test, the clock under test will be marked unstable through no fault of its own. This series checks for this, doing limited retries to get a good set of clock reads. If the clock is marked unstable and