From c60b4cf70127941e2f944a7971a7f6b3ecb367ac Mon Sep 17 00:00:00 2001 From: Alexander Graf Date: Mon, 2 Aug 2010 13:40:30 +0200 Subject: [PATCH] KVM: PPC: Add tracepoints for generic spte flushes The different ways of flusing shadow ptes have their own debug prints which use stupid old printk. Let's move them to tracepoints, making them easier available, faster and possible to activate on demand Signed-off-by: Alexander Graf --- arch/powerpc/kvm/book3s_mmu_hpte.c | 18 +++--------------- arch/powerpc/kvm/trace.h | 23 +++++++++++++++++++++++ 2 files changed, 26 insertions(+), 15 deletions(-) diff --git a/arch/powerpc/kvm/book3s_mmu_hpte.c b/arch/powerpc/kvm/book3s_mmu_hpte.c index 3397152..bd6a767 100644 --- a/arch/powerpc/kvm/book3s_mmu_hpte.c +++ b/arch/powerpc/kvm/book3s_mmu_hpte.c @@ -31,14 +31,6 @@ #define PTE_SIZE 12 -/* #define DEBUG_MMU */ - -#ifdef DEBUG_MMU -#define dprintk_mmu(a, ...) printk(KERN_INFO a, __VA_ARGS__) -#else -#define dprintk_mmu(a, ...) do { } while(0) -#endif - static struct kmem_cache *hpte_cache; static inline u64 kvmppc_mmu_hash_pte(u64 eaddr) @@ -186,9 +178,7 @@ static void kvmppc_mmu_pte_flush_long(struct kvm_vcpu *vcpu, ulong guest_ea) void kvmppc_mmu_pte_flush(struct kvm_vcpu *vcpu, ulong guest_ea, ulong ea_mask) { - dprintk_mmu("KVM: Flushing %d Shadow PTEs: 0x%lx & 0x%lx\n", - vcpu->arch.hpte_cache_count, guest_ea, ea_mask); - + trace_kvm_book3s_mmu_flush("", vcpu, guest_ea, ea_mask); guest_ea &= ea_mask; switch (ea_mask) { @@ -251,8 +241,7 @@ static void kvmppc_mmu_pte_vflush_long(struct kvm_vcpu *vcpu, u64 guest_vp) void kvmppc_mmu_pte_vflush(struct kvm_vcpu *vcpu, u64 guest_vp, u64 vp_mask) { - dprintk_mmu("KVM: Flushing %d Shadow vPTEs: 0x%llx & 0x%llx\n", - vcpu->arch.hpte_cache_count, guest_vp, vp_mask); + trace_kvm_book3s_mmu_flush("v", vcpu, guest_vp, vp_mask); guest_vp &= vp_mask; switch(vp_mask) { @@ -274,8 +263,7 @@ void kvmppc_mmu_pte_pflush(struct kvm_vcpu *vcpu, ulong pa_start, ulong pa_end) struct hpte_cache *pte; int i; - dprintk_mmu("KVM: Flushing %d Shadow pPTEs: 0x%lx - 0x%lx\n", - vcpu->arch.hpte_cache_count, pa_start, pa_end); + trace_kvm_book3s_mmu_flush("p", vcpu, pa_start, pa_end); rcu_read_lock(); diff --git a/arch/powerpc/kvm/trace.h b/arch/powerpc/kvm/trace.h index 06ad93e..23f757a 100644 --- a/arch/powerpc/kvm/trace.h +++ b/arch/powerpc/kvm/trace.h @@ -239,6 +239,29 @@ TRACE_EVENT(kvm_book3s_mmu_invalidate, __entry->vpage, __entry->raddr, __entry->flags) ); +TRACE_EVENT(kvm_book3s_mmu_flush, + TP_PROTO(const char *type, struct kvm_vcpu *vcpu, unsigned long long p1, + unsigned long long p2), + TP_ARGS(type, vcpu, p1, p2), + + TP_STRUCT__entry( + __field( int, count ) + __field( unsigned long long, p1 ) + __field( unsigned long long, p2 ) + __field( const char *, type ) + ), + + TP_fast_assign( + __entry->count = vcpu->arch.hpte_cache_count; + __entry->p1 = p1; + __entry->p2 = p2; + __entry->type = type; + ), + + TP_printk("Flush %d %sPTEs: %llx - %llx", + __entry->count, __entry->type, __entry->p1, __entry->p2) +); + #endif /* CONFIG_PPC_BOOK3S */ #endif /* _TRACE_KVM_H */ -- 2.7.4