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: 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

diff --git a/arch/powerpc/kvm/book3s_hv.h b/arch/powerpc/kvm/book3s_hv.h
index 6b7f07d9026b99c9587cea7b92b77d822e83e811..2f2e59d7d433a641883db090de6463403f83b2d6 100644 (file)
--- a/arch/powerpc/kvm/book3s_hv.h
+++ b/arch/powerpc/kvm/book3s_hv.h
@@ -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

diff --git a/arch/powerpc/kvm/book3s_hv_p9_entry.c b/arch/powerpc/kvm/book3s_hv_p9_entry.c
index 8d8c0cf39bdf99a114a403049c7db6ff6a21a522..32e078db8da230443fdd49aeba827c46243cadcc 100644 (file)
--- a/arch/powerpc/kvm/book3s_hv_p9_entry.c
+++ b/arch/powerpc/kvm/book3s_hv_p9_entry.c
@@ -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)