Commit 2861c827 authored by Fabiano Rosas's avatar Fabiano Rosas Committed by Michael Ellerman
Browse files

KVM: PPC: Book3S HV: Expose timing functions to module code 



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: default avatarFabiano Rosas <farosas@linux.ibm.com>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220525130554.2614394-5-farosas@linux.ibm.com
parent c3fa64c9

arch/powerpc/kvm/book3s_hv.h

+10 −0
Original line number Diff line number Diff line
@@ -40,3 +40,13 @@ void switch_pmu_to_guest(struct kvm_vcpu *vcpu, 
			    struct p9_host_os_sprs *host_os_sprs);

void switch_pmu_to_host(struct kvm_vcpu *vcpu,

			    struct p9_host_os_sprs *host_os_sprs);



#ifdef CONFIG_KVM_BOOK3S_HV_P9_TIMING

void accumulate_time(struct kvm_vcpu *vcpu, struct kvmhv_tb_accumulator *next);

#define start_timing(vcpu, next) accumulate_time(vcpu, next)

#define end_timing(vcpu) accumulate_time(vcpu, NULL)

#else

#define accumulate_time(vcpu, next) do {} while (0)

#define start_timing(vcpu, next) do {} while (0)

#define end_timing(vcpu) do {} while (0)

#endif

arch/powerpc/kvm/book3s_hv_p9_entry.c

+2 −9
Original line number Diff line number Diff line
@@ -438,7 +438,7 @@ void restore_p9_host_os_sprs(struct kvm_vcpu *vcpu, 
EXPORT_SYMBOL_GPL(restore_p9_host_os_sprs);



#ifdef CONFIG_KVM_BOOK3S_HV_P9_TIMING

static void __accumulate_time(struct kvm_vcpu *vcpu, struct kvmhv_tb_accumulator *next)

void accumulate_time(struct kvm_vcpu *vcpu, struct kvmhv_tb_accumulator *next)

{

	struct kvmppc_vcore *vc = vcpu->arch.vcore;

	struct kvmhv_tb_accumulator *curr;
@@ -468,14 +468,7 @@ static void __accumulate_time(struct kvm_vcpu *vcpu, struct kvmhv_tb_accumulator 
	smp_wmb();

	curr->seqcount = seq + 2;

}



#define start_timing(vcpu, next) __accumulate_time(vcpu, next)

#define end_timing(vcpu) __accumulate_time(vcpu, NULL)

#define accumulate_time(vcpu, next) __accumulate_time(vcpu, next)

#else

#define start_timing(vcpu, next) do {} while (0)

#define end_timing(vcpu) do {} while (0)

#define accumulate_time(vcpu, next) do {} while (0)

EXPORT_SYMBOL_GPL(accumulate_time);

#endif



static inline u64 mfslbv(unsigned int idx)