diff options
| author | Sean Christopherson <seanjc@google.com> | 2021-11-11 03:07:36 +0100 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2021-11-17 14:49:11 +0100 |
| commit | be399d824b432a85f8df86b566d2e5994fdf58b0 (patch) | |
| tree | 1a713857bd480daa2a99f0a5a32ad1ce7e67ecdf /arch/arm64 | |
| parent | KVM: arm64: Convert to the generic perf callbacks (diff) | |
| download | linux-be399d824b432a85f8df86b566d2e5994fdf58b0.tar.xz linux-be399d824b432a85f8df86b566d2e5994fdf58b0.zip | |
KVM: arm64: Hide kvm_arm_pmu_available behind CONFIG_HW_PERF_EVENTS=y
Move the definition of kvm_arm_pmu_available to pmu-emul.c and, out of
"necessity", hide it behind CONFIG_HW_PERF_EVENTS. Provide a stub for
the key's wrapper, kvm_arm_support_pmu_v3(). Moving the key's definition
out of perf.c will allow a future commit to delete perf.c entirely.
Signed-off-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20211111020738.2512932-16-seanjc@google.com
Diffstat (limited to 'arch/arm64')
| -rw-r--r-- | arch/arm64/kernel/image-vars.h | 2 | ||||
| -rw-r--r-- | arch/arm64/kvm/perf.c | 2 | ||||
| -rw-r--r-- | arch/arm64/kvm/pmu-emul.c | 2 |
3 files changed, 4 insertions, 2 deletions
diff --git a/arch/arm64/kernel/image-vars.h b/arch/arm64/kernel/image-vars.h index c96a9a0043bf..7eaf1f7c4168 100644 --- a/arch/arm64/kernel/image-vars.h +++ b/arch/arm64/kernel/image-vars.h @@ -102,7 +102,9 @@ KVM_NVHE_ALIAS(__stop___kvm_ex_table); KVM_NVHE_ALIAS(kvm_arm_hyp_percpu_base); /* PMU available static key */ +#ifdef CONFIG_HW_PERF_EVENTS KVM_NVHE_ALIAS(kvm_arm_pmu_available); +#endif /* Position-independent library routines */ KVM_NVHE_ALIAS_HYP(clear_page, __pi_clear_page); diff --git a/arch/arm64/kvm/perf.c b/arch/arm64/kvm/perf.c index 374c496a3f1d..52cfab253c65 100644 --- a/arch/arm64/kvm/perf.c +++ b/arch/arm64/kvm/perf.c @@ -11,8 +11,6 @@ #include <asm/kvm_emulate.h> -DEFINE_STATIC_KEY_FALSE(kvm_arm_pmu_available); - void kvm_perf_init(void) { kvm_register_perf_callbacks(NULL); diff --git a/arch/arm64/kvm/pmu-emul.c b/arch/arm64/kvm/pmu-emul.c index a5e4bbf5e68f..3308ceefa129 100644 --- a/arch/arm64/kvm/pmu-emul.c +++ b/arch/arm64/kvm/pmu-emul.c @@ -14,6 +14,8 @@ #include <kvm/arm_pmu.h> #include <kvm/arm_vgic.h> +DEFINE_STATIC_KEY_FALSE(kvm_arm_pmu_available); + static void kvm_pmu_create_perf_event(struct kvm_vcpu *vcpu, u64 select_idx); static void kvm_pmu_update_pmc_chained(struct kvm_vcpu *vcpu, u64 select_idx); static void kvm_pmu_stop_counter(struct kvm_vcpu *vcpu, struct kvm_pmc *pmc); |