[18/18] KVM: x86/mmu: Drop trace_kvm_age_page() tracepoint
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Message ID 20210326021957.1424875-19-seanjc@google.com
State New, archived
Headers show
Series
  • KVM: Consolidate and optimize MMU notifiers
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Commit Message

Sean Christopherson March 26, 2021, 2:19 a.m. UTC
Remove x86's trace_kvm_age_page() tracepoint.  It's mostly redundant with
the common trace_kvm_age_hva() tracepoint, and if there is a need for the
extra details, e.g. gfn, referenced, etc... those details should be added
to the common tracepoint so that all architectures and MMUs benefit from
the info.

Signed-off-by: Sean Christopherson <seanjc@google.com>
---
 arch/x86/kvm/mmu/mmu.c     |  1 -
 arch/x86/kvm/mmu/tdp_mmu.c |  2 --
 include/trace/events/kvm.h | 24 ------------------------
 3 files changed, 27 deletions(-)

Patch
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diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c
index 2070c7a91fdd..9eded46785b5 100644
--- a/arch/x86/kvm/mmu/mmu.c
+++ b/arch/x86/kvm/mmu/mmu.c
@@ -1467,7 +1467,6 @@  static bool kvm_age_rmapp(struct kvm *kvm, struct kvm_rmap_head *rmap_head,
 	for_each_rmap_spte(rmap_head, &iter, sptep)
 		young |= mmu_spte_age(sptep);
 
-	trace_kvm_age_page(gfn, level, slot, young);
 	return young;
 }
 
diff --git a/arch/x86/kvm/mmu/tdp_mmu.c b/arch/x86/kvm/mmu/tdp_mmu.c
index 21bb8b68a553..2941beb6559a 100644
--- a/arch/x86/kvm/mmu/tdp_mmu.c
+++ b/arch/x86/kvm/mmu/tdp_mmu.c
@@ -949,8 +949,6 @@  static bool age_gfn_range(struct kvm *kvm, struct tdp_iter *iter,
 
 	tdp_mmu_set_spte_no_acc_track(kvm, iter, new_spte);
 
-	trace_kvm_age_page(iter->gfn, iter->level, range->slot, true);
-
 	return true;
 }
 
diff --git a/include/trace/events/kvm.h b/include/trace/events/kvm.h
index 200eb7465530..37e1e1a2d67d 100644
--- a/include/trace/events/kvm.h
+++ b/include/trace/events/kvm.h
@@ -255,30 +255,6 @@  TRACE_EVENT(kvm_fpu,
 	TP_printk("%s", __print_symbolic(__entry->load, kvm_fpu_load_symbol))
 );
 
-TRACE_EVENT(kvm_age_page,
-	TP_PROTO(ulong gfn, int level, struct kvm_memory_slot *slot, int ref),
-	TP_ARGS(gfn, level, slot, ref),
-
-	TP_STRUCT__entry(
-		__field(	u64,	hva		)
-		__field(	u64,	gfn		)
-		__field(	u8,	level		)
-		__field(	u8,	referenced	)
-	),
-
-	TP_fast_assign(
-		__entry->gfn		= gfn;
-		__entry->level		= level;
-		__entry->hva		= ((gfn - slot->base_gfn) <<
-					    PAGE_SHIFT) + slot->userspace_addr;
-		__entry->referenced	= ref;
-	),
-
-	TP_printk("hva %llx gfn %llx level %u %s",
-		  __entry->hva, __entry->gfn, __entry->level,
-		  __entry->referenced ? "YOUNG" : "OLD")
-);
-
 #ifdef CONFIG_KVM_ASYNC_PF
 DECLARE_EVENT_CLASS(kvm_async_get_page_class,