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kvm: x86: some tsc debug cleanup 

There are some pr_debug in TSC code, which may have
been no use, so remove them as Paolo suggested.

Signed-off-by: Yi Wang <wang.yi59@zte.com.cn>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Yi Wang 2019-07-06 01:10:22 +08:00 committed by Paolo Bonzini
parent 9481b7f10c
commit 9a5611af5e
1 changed files with 0 additions and 8 deletions
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8
arch/x86/kvm/x86.c
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@ -1540,9 +1540,6 @@ static void kvm_get_time_scale(uint64_t scaled_hz, uint64_t base_hz,
*pshift = shift;
*pmultiplier = div_frac(scaled64, tps32);
pr_debug("%s: base_hz %llu => %llu, shift %d, mul %u\n",
__func__, base_hz, scaled_hz, shift, *pmultiplier);
}
#ifdef CONFIG_X86_64
@ -1785,12 +1782,10 @@ void kvm_write_tsc(struct kvm_vcpu *vcpu, struct msr_data *msr)
vcpu->arch.virtual_tsc_khz == kvm->arch.last_tsc_khz) {
if (!kvm_check_tsc_unstable()) {
offset = kvm->arch.cur_tsc_offset;
pr_debug("kvm: matched tsc offset for %llu\n", data);
} else {
u64 delta = nsec_to_cycles(vcpu, elapsed);
data += delta;
offset = kvm_compute_tsc_offset(vcpu, data);
pr_debug("kvm: adjusted tsc offset by %llu\n", delta);
}
matched = true;
already_matched = (vcpu->arch.this_tsc_generation == kvm->arch.cur_tsc_generation);
@ -1809,8 +1804,6 @@ void kvm_write_tsc(struct kvm_vcpu *vcpu, struct msr_data *msr)
kvm->arch.cur_tsc_write = data;
kvm->arch.cur_tsc_offset = offset;
matched = false;
pr_debug("kvm: new tsc generation %llu, clock %llu\n",
kvm->arch.cur_tsc_generation, data);
}
/*
@ -6911,7 +6904,6 @@ static void kvm_timer_init(void)
cpufreq_register_notifier(&kvmclock_cpufreq_notifier_block,
CPUFREQ_TRANSITION_NOTIFIER);
}
pr_debug("kvm: max_tsc_khz = %ld\n", max_tsc_khz);
cpuhp_setup_state(CPUHP_AP_X86_KVM_CLK_ONLINE, "x86/kvm/clk:online",
kvmclock_cpu_online, kvmclock_cpu_down_prep);