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hv: hv_main: adjust vm exit trace position

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When we use script to analyze the latency between vm_exit and vm_entry,
it does not include the duration of vm_exit handler.

The patch moves the vm_exit trace before vmexit_handler.

v2: move vm_exit trace right after run_vcpu.

Tracked-On: #2341
Signed-off-by: Zhipeng Gong <zhipeng.gong@intel.com>
Reviewed-by: Yan, Like <like.yan@intel.com>
This commit is contained in:
Zhipeng Gong 2019-01-14 11:30:36 +08:00 committed by wenlingz
parent dc6d1d5fa7
commit 7c56243225
1 changed files with 3 additions and 5 deletions
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8
hypervisor/common/hv_main.c
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@ -58,16 +58,17 @@ void vcpu_thread(struct sched_object *obj)
continue;
}
TRACE_2L(TRACE_VM_ENTER, 0UL, 0UL);
profiling_vmenter_handler(vcpu);
TRACE_2L(TRACE_VM_ENTER, 0UL, 0UL);
ret = run_vcpu(vcpu);
if (ret != 0) {
pr_fatal("vcpu resume failed");
pause_vcpu(vcpu, VCPU_ZOMBIE);
continue;
}
basic_exit_reason = vcpu->arch.exit_reason & 0xFFFFU;
TRACE_2L(TRACE_VM_EXIT, basic_exit_reason, vcpu_get_rip(vcpu));
vcpu->arch.nrexits++;
@ -76,7 +77,6 @@ void vcpu_thread(struct sched_object *obj)
CPU_IRQ_ENABLE();
/* Dispatch handler */
ret = vmexit_handler(vcpu);
basic_exit_reason = vcpu->arch.exit_reason & 0xFFFFU;
if (ret < 0) {
pr_fatal("dispatch VM exit handler failed for reason"
" %d, ret = %d!", basic_exit_reason, ret);
@ -84,8 +84,6 @@ void vcpu_thread(struct sched_object *obj)
continue;
}
TRACE_2L(TRACE_VM_EXIT, basic_exit_reason, vcpu_get_rip(vcpu));
profiling_post_vmexit_handler(vcpu);
} while (1);
}