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KVM: kvmtrace: replace get_cycles with ktime_get v3

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The current kvmtrace code uses get_cycles() while the interpretation would be
easier using using nanoseconds. ktime_get() should give at least the same
accuracy as get_cycles on all architectures (even better on 32bit archs) but
at a better unit (e.g. comparable between hosts with different frequencies.

[avi: avoid ktime_t in public header]

Signed-off-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
This commit is contained in:
Christian Ehrhardt
2008-07-14 14:00:01 +02:00
committed by Avi Kivity
parent e32c8f2c07
commit 3f7f95c65e
2 changed files with 13 additions and 12 deletions
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6
include/linux/kvm.h
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@@ -322,12 +322,12 @@ struct kvm_trace_rec {
__u32 vcpu_id;
union {
struct {
__u64 cycle_u64;
__u64 timestamp;
__u32 extra_u32[KVM_TRC_EXTRA_MAX];
} __attribute__((packed)) cycle;
} __attribute__((packed)) timestamp;
struct {
__u32 extra_u32[KVM_TRC_EXTRA_MAX];
} nocycle;
} notimestamp;
} u;
};