On Mon, Jul 30, 2018 at 12:43:34PM -0700, Sinan Kaya wrote: > Hi Don, > > On 7/30/2018 12:28 PM, Don Zickus wrote: > > > [ 0.152492] NMI watchdog: Perf event create on CPU 0 failed with -2 > > > [ 0.156002] NMI watchdog: Perf NMI watchdog permanently disabled > > Hi Sinan, > > > > Any reason why? Usually when the 'perf event' fails, that indicates a > > system problem. And most folks don't boot with the 'debug' option. This > > means these unusual failures are hidden and become difficult to debug later > > when it propagates. > > Sorry, I should have been more clear. I'm only suppressing the first > error message. > > [ 0.152492] NMI watchdog: Perf event create on CPU 0 failed with -2 > > Second message is still visible during boot. User knows that NMI watchdog is > disabled. > > [ 0.156002] NMI watchdog: Perf NMI watchdog permanently disabled > > Code is trying to probe the platform capabilities and is failing > because of missing PMU in the system. If someone is interested in > finding out why watchdog was disabled, they can turn on the debug > message level. > > > > > Or are you running the watchdog in a different configuration such that this > > is a common nuisance that you are trying to suppress? > > Yup, system doesn't support PMU.
Hi Sinan, Oh, I see. You are just trying to hide the always failing probe. It seems to make sense. Acked-by: Don Zickus <dzic...@redhat.com>
