KVM: MMU: Add tracepoint for guest page aging

[safe/jmp/linux-2.6] / arch / x86 / kvm / mmu.c

diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index b8da671..7397932 100644 (file)
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -151,6 +151,9 @@ module_param(oos_shadow, bool, 0644);
 #define ACC_USER_MASK    PT_USER_MASK
 #define ACC_ALL          (ACC_EXEC_MASK | ACC_WRITE_MASK | ACC_USER_MASK)
 
+#include <trace/events/kvm.h>
+
+#undef TRACE_INCLUDE_FILE
 #define CREATE_TRACE_POINTS
 #include "mmutrace.h"
 
@@ -792,6 +795,7 @@ static int kvm_handle_hva(struct kvm *kvm, unsigned long hva,
                                         unsigned long data))
 {
        int i, j;
+       int ret;
        int retval = 0;
        struct kvm_memslots *slots;
 
@@ -806,16 +810,17 @@ static int kvm_handle_hva(struct kvm *kvm, unsigned long hva,
                if (hva >= start && hva < end) {
                        gfn_t gfn_offset = (hva - start) >> PAGE_SHIFT;
 
-                       retval |= handler(kvm, &memslot->rmap[gfn_offset],
-                                         data);
+                       ret = handler(kvm, &memslot->rmap[gfn_offset], data);
 
                        for (j = 0; j < KVM_NR_PAGE_SIZES - 1; ++j) {
                                int idx = gfn_offset;
                                idx /= KVM_PAGES_PER_HPAGE(PT_DIRECTORY_LEVEL + j);
-                               retval |= handler(kvm,
+                               ret |= handler(kvm,
                                        &memslot->lpage_info[j][idx].rmap_pde,
                                        data);
                        }
+                       trace_kvm_age_page(hva, memslot, ret);
+                       retval |= ret;
                }
        }