[libvirt] [PATCH] Make use of PERF_COUNT_HW_REF_CPU_CYCLES conditional

[Daniel P. Berrange]

On Fri, Dec 16, 2016 at 10:47:22AM +0000, Daniel P. Berrange wrote:
> The PERF_COUNT_HW_REF_CPU_CYCLES constant is not available
> on all Linux distros libvirt targets, so its use must be
> made conditional. Other constant have existed long enough
> that we can assume they exist, as we don't support very
> old distros like RHEL-5 any more.
> 
> Signed-off-by: Daniel P. Berrange <berrange at redhat.com>
> ---
>  src/util/virperf.c | 8 +++++++-
>  1 file changed, 7 insertions(+), 1 deletion(-)

Opps, forgot to annotate that I pushed this as a build breaker
fix for Debian

> 
> diff --git a/src/util/virperf.c b/src/util/virperf.c
> index 49ec258..f64692b 100644
> --- a/src/util/virperf.c
> +++ b/src/util/virperf.c
> @@ -104,8 +104,14 @@ static struct virPerfEventAttr attrs[] = {
>       .attrType = PERF_TYPE_HARDWARE,
>       .attrConfig = PERF_COUNT_HW_STALLED_CYCLES_BACKEND},
>      {.type = VIR_PERF_EVENT_REF_CPU_CYCLES,
> +# ifdef PERF_COUNT_HW_REF_CPU_CYCLES
>       .attrType = PERF_TYPE_HARDWARE,
> -     .attrConfig = PERF_COUNT_HW_REF_CPU_CYCLES},
> +     .attrConfig = PERF_COUNT_HW_REF_CPU_CYCLES
> +# else
> +     .attrType = 0,
> +     .attrConfig = 0,
> +# endif
> +    },
>  };
>  typedef struct virPerfEventAttr *virPerfEventAttrPtr;
>  

Regards,
Daniel
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