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authorAvi Kivity <avi@redhat.com>2009-12-31 12:10:16 +0200
committerMarcelo Tosatti <mtosatti@redhat.com>2010-03-01 12:36:09 -0300
commit90bb6fc556ab255abd798bcf4ff5769690ab2eea (patch)
treedd17338dbcb5a2963800639bcf097595861810d2 /arch/x86/kvm
parent43db669730743fcc2a74b641ff4d77781eb15bfa (diff)
KVM: MMU: Add tracepoint for guest page aging
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/x86/kvm')
-rw-r--r--arch/x86/kvm/mmu.c11
1 files changed, 8 insertions, 3 deletions
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index b8da6715d08..739793240d1 100644
--- 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;
}
}