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Subject[PATCH] kvm: x86: some tsc debug cleanup
Date
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>
---
arch/x86/kvm/x86.c | 8 --------
1 file changed, 8 deletions(-)

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index fafd81d..86f9861 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -1518,9 +1518,6 @@ 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
@@ -1763,12 +1760,10 @@ 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);
@@ -1787,8 +1782,6 @@ 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);
}

/*
@@ -6857,7 +6850,6 @@ 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);
--
1.8.3.1
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