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2861c82728
The next patch adds new timing points to the P9 entry path, some of which are in the module code, so we need to export the timing functions. Signed-off-by: Fabiano Rosas <farosas@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220525130554.2614394-5-farosas@linux.ibm.com
53 lines
1.5 KiB
C
53 lines
1.5 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Privileged (non-hypervisor) host registers to save.
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*/
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struct p9_host_os_sprs {
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unsigned long iamr;
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unsigned long amr;
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unsigned int pmc1;
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unsigned int pmc2;
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unsigned int pmc3;
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unsigned int pmc4;
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unsigned int pmc5;
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unsigned int pmc6;
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unsigned long mmcr0;
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unsigned long mmcr1;
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unsigned long mmcr2;
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unsigned long mmcr3;
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unsigned long mmcra;
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unsigned long siar;
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unsigned long sier1;
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unsigned long sier2;
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unsigned long sier3;
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unsigned long sdar;
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};
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static inline bool nesting_enabled(struct kvm *kvm)
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{
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return kvm->arch.nested_enable && kvm_is_radix(kvm);
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}
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bool load_vcpu_state(struct kvm_vcpu *vcpu,
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struct p9_host_os_sprs *host_os_sprs);
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void store_vcpu_state(struct kvm_vcpu *vcpu);
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void save_p9_host_os_sprs(struct p9_host_os_sprs *host_os_sprs);
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void restore_p9_host_os_sprs(struct kvm_vcpu *vcpu,
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struct p9_host_os_sprs *host_os_sprs);
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void switch_pmu_to_guest(struct kvm_vcpu *vcpu,
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struct p9_host_os_sprs *host_os_sprs);
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void switch_pmu_to_host(struct kvm_vcpu *vcpu,
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struct p9_host_os_sprs *host_os_sprs);
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#ifdef CONFIG_KVM_BOOK3S_HV_P9_TIMING
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void accumulate_time(struct kvm_vcpu *vcpu, struct kvmhv_tb_accumulator *next);
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#define start_timing(vcpu, next) accumulate_time(vcpu, next)
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#define end_timing(vcpu) accumulate_time(vcpu, NULL)
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#else
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#define accumulate_time(vcpu, next) do {} while (0)
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#define start_timing(vcpu, next) do {} while (0)
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#define end_timing(vcpu) do {} while (0)
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#endif
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