From: Jerone Young <jyoung5@xxxxxxxxxx> From: Jerone Young <jyoung5@xxxxxxxxxx> This patch adds trace points to track powerpc TLB activities using the KVM_TRACE infrastructure. Update to v1: - fixed wrong indents reported by checkpatch Signed-off-by: Jerone Young <jyoung5@xxxxxxxxxx> Signed-off-by: Christian Ehrhardt <ehrhardt@xxxxxxxxxxxxxxxxxx> --- [diffstat] arch/powerpc/kvm/44x_tlb.c | 15 ++++++++++++++- arch/powerpc/kvm/emulate.c | 4 ++++ include/linux/kvm.h | 3 +++ 3 files changed, 21 insertions(+), 1 deletion(-) [diff] diff --git a/arch/powerpc/kvm/44x_tlb.c b/arch/powerpc/kvm/44x_tlb.c --- a/arch/powerpc/kvm/44x_tlb.c +++ b/arch/powerpc/kvm/44x_tlb.c @@ -19,6 +19,7 @@ #include <linux/types.h> #include <linux/string.h> +#include <linux/kvm.h> #include <linux/kvm_host.h> #include <linux/highmem.h> #include <asm/mmu-44x.h> @@ -175,6 +176,10 @@ stlbe->word1 = (hpaddr & 0xfffffc00) | ((hpaddr >> 32) & 0xf); stlbe->word2 = kvmppc_44x_tlb_shadow_attrib(flags, vcpu->arch.msr & MSR_PR); + + KVMTRACE_5D(STLB_WRITE, vcpu, victim, + stlbe->tid, stlbe->word0, stlbe->word1, stlbe->word2, + handler); } void kvmppc_mmu_invalidate(struct kvm_vcpu *vcpu, u64 eaddr, u64 asid) @@ -203,6 +208,9 @@ kvmppc_44x_shadow_release(vcpu, i); stlbe->word0 = 0; + KVMTRACE_5D(STLB_INVAL, vcpu, i, + stlbe->tid, stlbe->word0, stlbe->word1, + stlbe->word2, handler); } up_write(¤t->mm->mmap_sem); } @@ -216,8 +224,13 @@ /* XXX Replace loop with fancy data structures. */ down_write(¤t->mm->mmap_sem); for (i = 0; i <= tlb_44x_hwater; i++) { + struct tlbe *stlbe = &vcpu->arch.shadow_tlb[i]; + kvmppc_44x_shadow_release(vcpu, i); - vcpu->arch.shadow_tlb[i].word0 = 0; + stlbe->word0 = 0; + KVMTRACE_5D(STLB_INVAL, vcpu, i, + stlbe->tid, stlbe->word0, stlbe->word1, + stlbe->word2, handler); } up_write(¤t->mm->mmap_sem); } diff --git a/arch/powerpc/kvm/emulate.c b/arch/powerpc/kvm/emulate.c --- a/arch/powerpc/kvm/emulate.c +++ b/arch/powerpc/kvm/emulate.c @@ -169,6 +169,10 @@ * are mapped on the fly. */ kvmppc_mmu_map(vcpu, eaddr, raddr >> PAGE_SHIFT, asid, flags); } + + KVMTRACE_5D(GTLB_WRITE, vcpu, index, + tlbe->tid, tlbe->word0, tlbe->word1, tlbe->word2, + handler); return EMULATE_DONE; } diff --git a/include/linux/kvm.h b/include/linux/kvm.h --- a/include/linux/kvm.h +++ b/include/linux/kvm.h @@ -470,5 +470,8 @@ #define KVM_TRC_LMSW (KVM_TRC_HANDLER + 0x13) #define KVM_TRC_APIC_ACCESS (KVM_TRC_HANDLER + 0x14) #define KVM_TRC_TDP_FAULT (KVM_TRC_HANDLER + 0x15) +#define KVM_TRC_GTLB_WRITE (KVM_TRC_HANDLER + 0x16) +#define KVM_TRC_STLB_WRITE (KVM_TRC_HANDLER + 0x17) +#define KVM_TRC_STLB_INVAL (KVM_TRC_HANDLER + 0x18) #endif -- To unsubscribe from this list: send the line "unsubscribe kvm-ppc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html