From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752018AbaHSUhu (ORCPT ); Tue, 19 Aug 2014 16:37:50 -0400 Received: from mx1.redhat.com ([209.132.183.28]:43373 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751824AbaHSUhr (ORCPT ); Tue, 19 Aug 2014 16:37:47 -0400 From: =?UTF-8?q?Radim=20Kr=C4=8Dm=C3=A1=C5=99?= To: kvm@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Paolo Bonzini , Gleb Natapov , Raghavendra KT , Vinod Chegu , Hui-Zhi Subject: [PATCH 6/9] KVM: trace kvm_ple_window grow/shrink Date: Tue, 19 Aug 2014 22:35:33 +0200 Message-Id: <1408480536-8240-7-git-send-email-rkrcmar@redhat.com> In-Reply-To: <1408480536-8240-1-git-send-email-rkrcmar@redhat.com> References: <1408480536-8240-1-git-send-email-rkrcmar@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Tracepoint for dynamic PLE window, fired on every potential change. Signed-off-by: Radim Krčmář --- arch/x86/kvm/trace.h | 29 +++++++++++++++++++++++++++++ arch/x86/kvm/vmx.c | 4 ++++ arch/x86/kvm/x86.c | 1 + 3 files changed, 34 insertions(+) diff --git a/arch/x86/kvm/trace.h b/arch/x86/kvm/trace.h index e850a7d..e4682f5 100644 --- a/arch/x86/kvm/trace.h +++ b/arch/x86/kvm/trace.h @@ -848,6 +848,35 @@ TRACE_EVENT(kvm_track_tsc, __print_symbolic(__entry->host_clock, host_clocks)) ); +TRACE_EVENT(kvm_ple_window, + TP_PROTO(int grow, unsigned int vcpu_id, int new, int old), + TP_ARGS(grow, vcpu_id, new, old), + + TP_STRUCT__entry( + __field( int, grow ) + __field( unsigned int, vcpu_id ) + __field( int, new ) + __field( int, old ) + ), + + TP_fast_assign( + __entry->grow = grow; + __entry->vcpu_id = vcpu_id; + __entry->new = new; + __entry->old = old; + ), + + TP_printk("vcpu %u: ple_window %d %s %d", + __entry->vcpu_id, + __entry->new, + __entry->grow ? "<+" : "<-", + __entry->old) +); +#define trace_kvm_ple_window_grow(vcpu_id, new, old) \ + trace_kvm_ple_window(1, vcpu_id, new, old) +#define trace_kvm_ple_window_shrink(vcpu_id, new, old) \ + trace_kvm_ple_window(0, vcpu_id, new, old) + #endif /* CONFIG_X86_64 */ #endif /* _TRACE_KVM_H */ diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index e1192fb..a236a9f 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -5709,6 +5709,8 @@ static void grow_ple_window(struct kvm_vcpu *vcpu) new = old + ple_window_grow; vmx->ple_window = min(new, ple_window_max); + + trace_kvm_ple_window_grow(vcpu->vcpu_id, vmx->ple_window, old); } static void shrink_ple_window(struct kvm_vcpu *vcpu) @@ -5725,6 +5727,8 @@ static void shrink_ple_window(struct kvm_vcpu *vcpu) new = old - ple_window_shrink; vmx->ple_window = max(new, ple_window); + + trace_kvm_ple_window_shrink(vcpu->vcpu_id, vmx->ple_window, old); } /* diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 5696ee7..814b20c 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -7648,3 +7648,4 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_invlpga); EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_skinit); EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_nested_intercepts); EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_write_tsc_offset); +EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_ple_window); -- 2.0.4