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Make use of PERF_COUNT_HW_REF_CPU_CYCLES conditional

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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@redhat.com>
This commit is contained in:
Daniel P. Berrange 2016-12-16 10:30:27 +00:00
parent 256f6b1826
commit 1d29c889ad
1 changed files with 7 additions and 1 deletions
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8
src/util/virperf.c
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@ -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;