Messages in this thread |  | | Date | Thu, 13 Feb 2014 12:35:18 -0500 (EST) | From | Vince Weaver <> | Subject | Re: x86_pmu_start WARN_ON. |
| |
On Thu, 13 Feb 2014, Vince Weaver wrote: > On Wed, 12 Feb 2014, Vince Weaver wrote: > > > > It is triggered in this case when you have: > > > > An event group of breakpoint, cycles, branches > > An event of instructions with precise=1 > > A tracepoint > > > > and then you close the tracepoint. > > and for what it's worth, it's the cycles event (type=0 config=0) that's > causing the WARN_ON.
The plot thickens. The WARN_ON is not caused by the cycles event that we open, but it's caused by the NMI Watchdog cycles event.
I'm not sure if that's useful info or not.
Vince
|  |