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KVM: arm64: Convert to the generic perf callbacks

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Drop arm64's version of the callbacks in favor of the callbacks provided
by generic KVM, which are semantically identical.

Signed-off-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20211111020738.2512932-15-seanjc@google.com
This commit is contained in:
Sean Christopherson 2021-11-11 02:07:35 +00:00 committed by Peter Zijlstra
parent 33271a9e2b
commit 7b517831a1
1 changed files with 2 additions and 32 deletions
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34
arch/arm64/kvm/perf.c
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@ -13,42 +13,12 @@
DEFINE_STATIC_KEY_FALSE(kvm_arm_pmu_available);
static unsigned int kvm_guest_state(void)
{
struct kvm_vcpu *vcpu = kvm_get_running_vcpu();
unsigned int state;
if (!vcpu)
return 0;
state = PERF_GUEST_ACTIVE;
if (!vcpu_mode_priv(vcpu))
state |= PERF_GUEST_USER;
return state;
}
static unsigned long kvm_get_guest_ip(void)
{
struct kvm_vcpu *vcpu = kvm_get_running_vcpu();
if (WARN_ON_ONCE(!vcpu))
return 0;
return *vcpu_pc(vcpu);
}
static struct perf_guest_info_callbacks kvm_guest_cbs = {
.state = kvm_guest_state,
.get_ip = kvm_get_guest_ip,
};
void kvm_perf_init(void)
{
perf_register_guest_info_callbacks(&kvm_guest_cbs);
kvm_register_perf_callbacks(NULL);
}
void kvm_perf_teardown(void)
{
perf_unregister_guest_info_callbacks(&kvm_guest_cbs);
kvm_unregister_perf_callbacks();
}