Messages in this thread | | | Date | Mon, 22 Jul 2013 12:05:06 -0300 | From | Arnaldo Carvalho de Melo <> | Subject | Re: [PATCH] perf record/top: handle ENODEV on default cycles event |
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Em Thu, Jul 18, 2013 at 05:27:59PM -0600, David Ahern escreveu: > Some systems (e.g., VMs on qemu-0.13 with the default vcpu model) report > an unsupported CPU model: > > Performance Events: unsupported p6 CPU model 2 no PMU driver, software events only. > > Subsequent invocations of perf fail with: > > The sys_perf_event_open() syscall returned with 19 (No such device) for event (cycles). > /bin/dmesg may provide additional information. > No CONFIG_PERF_EVENTS=y kernel support configured? > > Add ENODEV to the list of errno's to fallback to cpu-clock.
Thanks, applied.
- Arnaldo
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