summaryrefslogtreecommitdiff
path: root/virt/kvm/kvm_trace.c
diff options
context:
space:
mode:
Diffstat (limited to 'virt/kvm/kvm_trace.c')
-rw-r--r--virt/kvm/kvm_trace.c30
1 files changed, 16 insertions, 14 deletions
diff --git a/virt/kvm/kvm_trace.c b/virt/kvm/kvm_trace.c
index 58141f31ea8f..41dcc845f78c 100644
--- a/virt/kvm/kvm_trace.c
+++ b/virt/kvm/kvm_trace.c
@@ -17,6 +17,7 @@
#include <linux/module.h>
#include <linux/relay.h>
#include <linux/debugfs.h>
+#include <linux/ktime.h>
#include <linux/kvm_host.h>
@@ -35,16 +36,16 @@ static struct kvm_trace *kvm_trace;
struct kvm_trace_probe {
const char *name;
const char *format;
- u32 cycle_in;
+ u32 timestamp_in;
marker_probe_func *probe_func;
};
-static inline int calc_rec_size(int cycle, int extra)
+static inline int calc_rec_size(int timestamp, int extra)
{
int rec_size = KVM_TRC_HEAD_SIZE;
rec_size += extra;
- return cycle ? rec_size += KVM_TRC_CYCLE_SIZE : rec_size;
+ return timestamp ? rec_size += KVM_TRC_CYCLE_SIZE : rec_size;
}
static void kvm_add_trace(void *probe_private, void *call_data,
@@ -54,12 +55,13 @@ static void kvm_add_trace(void *probe_private, void *call_data,
struct kvm_trace *kt = kvm_trace;
struct kvm_trace_rec rec;
struct kvm_vcpu *vcpu;
- int i, extra, size;
+ int i, size;
+ u32 extra;
if (unlikely(kt->trace_state != KVM_TRACE_STATE_RUNNING))
return;
- rec.event = va_arg(*args, u32);
+ rec.rec_val = TRACE_REC_EVENT_ID(va_arg(*args, u32));
vcpu = va_arg(*args, struct kvm_vcpu *);
rec.pid = current->tgid;
rec.vcpu_id = vcpu->vcpu_id;
@@ -67,21 +69,21 @@ static void kvm_add_trace(void *probe_private, void *call_data,
extra = va_arg(*args, u32);
WARN_ON(!(extra <= KVM_TRC_EXTRA_MAX));
extra = min_t(u32, extra, KVM_TRC_EXTRA_MAX);
- rec.extra_u32 = extra;
- rec.cycle_in = p->cycle_in;
+ rec.rec_val |= TRACE_REC_TCS(p->timestamp_in)
+ | TRACE_REC_NUM_DATA_ARGS(extra);
- if (rec.cycle_in) {
- rec.u.cycle.cycle_u64 = get_cycles();
+ if (p->timestamp_in) {
+ rec.u.timestamp.timestamp = ktime_to_ns(ktime_get());
- for (i = 0; i < rec.extra_u32; i++)
- rec.u.cycle.extra_u32[i] = va_arg(*args, u32);
+ for (i = 0; i < extra; i++)
+ rec.u.timestamp.extra_u32[i] = va_arg(*args, u32);
} else {
- for (i = 0; i < rec.extra_u32; i++)
- rec.u.nocycle.extra_u32[i] = va_arg(*args, u32);
+ for (i = 0; i < extra; i++)
+ rec.u.notimestamp.extra_u32[i] = va_arg(*args, u32);
}
- size = calc_rec_size(rec.cycle_in, rec.extra_u32 * sizeof(u32));
+ size = calc_rec_size(p->timestamp_in, extra * sizeof(u32));
relay_write(kt->rchan, &rec, size);
}