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

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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
This commit is contained in:
Fabiano Rosas 2022-05-25 10:05:53 -03:00 committed by Michael Ellerman
parent c3fa64c99c
commit 2861c82728
2 changed files with 12 additions and 9 deletions
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10
arch/powerpc/kvm/book3s_hv.h
View File

@ -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

11
arch/powerpc/kvm/book3s_hv_p9_entry.c
View File

@ -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)