KVM: ppc: adds trace points for ppc tlb activity
This patch adds trace points to track powerpc TLB activities using the
KVM_TRACE infrastructure.
Signed-off-by: Jerone Young <jyoung5@us.ibm.com>
Signed-off-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
diff --git a/arch/powerpc/kvm/44x_tlb.c b/arch/powerpc/kvm/44x_tlb.c
index 5a5602d..a207d16 100644
--- 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, gva_t eaddr,
@@ -204,6 +209,9 @@
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);
}
@@ -217,8 +225,13 @@
/* 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);
}