From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: [PATCH 8/8] KVM: trace guest fpu loads and unloads Date: Thu, 21 Jan 2010 15:31:52 +0200 Message-ID: <1264080712-3981-9-git-send-email-avi@redhat.com> References: <1264080712-3981-1-git-send-email-avi@redhat.com> Cc: kvm@vger.kernel.org To: Marcelo Tosatti Return-path: Received: from mx1.redhat.com ([209.132.183.28]:3885 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752415Ab0AUNbz (ORCPT ); Thu, 21 Jan 2010 08:31:55 -0500 Received: from int-mx03.intmail.prod.int.phx2.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.16]) by mx1.redhat.com (8.13.8/8.13.8) with ESMTP id o0LDVtn1013635 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Thu, 21 Jan 2010 08:31:55 -0500 In-Reply-To: <1264080712-3981-1-git-send-email-avi@redhat.com> Sender: kvm-owner@vger.kernel.org List-ID: Signed-off-by: Avi Kivity --- arch/x86/kvm/x86.c | 2 ++ include/trace/events/kvm.h | 19 +++++++++++++++++++ 2 files changed, 21 insertions(+), 0 deletions(-) diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 8b42c19..06a03c1 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -5304,6 +5304,7 @@ void kvm_load_guest_fpu(struct kvm_vcpu *vcpu) vcpu->guest_fpu_loaded = 1; kvm_fx_save(&vcpu->arch.host_fx_image); kvm_fx_restore(&vcpu->arch.guest_fx_image); + trace_kvm_fpu(1); } void kvm_put_guest_fpu(struct kvm_vcpu *vcpu) @@ -5316,6 +5317,7 @@ void kvm_put_guest_fpu(struct kvm_vcpu *vcpu) kvm_fx_restore(&vcpu->arch.host_fx_image); ++vcpu->stat.fpu_reload; set_bit(KVM_REQ_DEACTIVATE_FPU, &vcpu->requests); + trace_kvm_fpu(0); } void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu) diff --git a/include/trace/events/kvm.h b/include/trace/events/kvm.h index dbe1084..8abdc12 100644 --- a/include/trace/events/kvm.h +++ b/include/trace/events/kvm.h @@ -145,6 +145,25 @@ TRACE_EVENT(kvm_mmio, __entry->len, __entry->gpa, __entry->val) ); +#define kvm_fpu_load_symbol \ + {0, "unload"}, \ + {1, "load"} + +TRACE_EVENT(kvm_fpu, + TP_PROTO(int load), + TP_ARGS(load), + + TP_STRUCT__entry( + __field( u32, load ) + ), + + TP_fast_assign( + __entry->load = load; + ), + + TP_printk("%s", __print_symbolic(__entry->load, kvm_fpu_load_symbol)) +); + #endif /* _TRACE_KVM_MAIN_H */ /* This part must be outside protection */ -- 1.6.5.3