From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C956DC433FF for ; Mon, 5 Aug 2019 02:03:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A1F6520B1F for ; Mon, 5 Aug 2019 02:03:46 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="ELHAEb/c" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727125AbfHECDp (ORCPT ); Sun, 4 Aug 2019 22:03:45 -0400 Received: from mail-pf1-f196.google.com ([209.85.210.196]:34867 "EHLO mail-pf1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727060AbfHECDn (ORCPT ); Sun, 4 Aug 2019 22:03:43 -0400 Received: by mail-pf1-f196.google.com with SMTP id u14so38787927pfn.2; Sun, 04 Aug 2019 19:03:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=Hoi2qggJgGKlBqGJ2GtCroDIXuqb12/f4X0se5rdkzk=; b=ELHAEb/c0g8ciUTihz8zTEwp7BEgCe6Jif2phFQXVHydHHkUp6z2DGYbVMY7bemulb rnTGgy7Ar/5FVw914qquuOyhNx9fCROm7Jy4SEsXiXKJRKnNTlXuFA/XbCCl5A7eraEq StDL+CWkOO7lougYGUsxOZnqNLLzOn/Y+xAGtnPZGraqpPbLSbNHMO8sBWtsdzlLL9SN pt5ghjiaitwO50Qf54t4MVv7QbsicNW715PVgRgbBwwDNrVinqhN7drKclxKMvLlNKJ8 yy6KcDRYTH9r1lNJEdI3DoxJ1SBEi05CE2l0mI8G3JizdLzYk9Vb4AvJhqeklPJomkSF vzKg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=Hoi2qggJgGKlBqGJ2GtCroDIXuqb12/f4X0se5rdkzk=; b=JSpCIUh0It6XIEVLZvz0+kCQQiG2Ot1Vg2ah/ZeXR7/IbN2JTFi4gVctjy/l+3pQ0M ARloOEkcJ4lHq2lIY7cH0rWjHUvIFVprP1cI8J8wZyk7oROjEJef423/Q++RlmKRuldQ LbWGucgctoLf4p6Kh/lr8uIJT4hCPpKFRU8izhG+mKyQO81FiVsnpqh6Gl+ZZf9lspwC dqZoSDbE/tOAtDF4Dciz0Dp9DkFvEHaul1Ux/7QriGEYbr5Uub+Ok7b38OFZAPJEUvEz Qve7aLfrYWkr/RBynv8jB/6MVRYwlHg0+hn0EDHpkUKFd/fQjRSDlR3vbB1keql6kTUV 3y6Q== X-Gm-Message-State: APjAAAWbgUUiQ/98XWoLg2rw6B+ohRnPqZDd5Hp6knu2qazNhgLkFTmI evDiPmT2lX2+ge8Xk46G9+OmEQE4 X-Google-Smtp-Source: APXvYqxDROGQMciy3kn6lTsD8uj9Zufwk/bjW0IymlSN9rRmy6jNJFEGGM9u/GGNAL9RHc/G5O70Wg== X-Received: by 2002:a62:82c1:: with SMTP id w184mr72018868pfd.8.1564970622332; Sun, 04 Aug 2019 19:03:42 -0700 (PDT) Received: from localhost.localdomain ([203.205.141.123]) by smtp.googlemail.com with ESMTPSA id o32sm14739365pje.9.2019.08.04.19.03.40 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Sun, 04 Aug 2019 19:03:41 -0700 (PDT) From: Wanpeng Li X-Google-Original-From: Wanpeng Li To: linux-kernel@vger.kernel.org, kvm@vger.kernel.org Cc: Paolo Bonzini , =?UTF-8?q?Radim=20Kr=C4=8Dm=C3=A1=C5=99?= Subject: [PATCH v4 6/6] KVM: X86: Add pv tlb shootdown tracepoint Date: Mon, 5 Aug 2019 10:03:24 +0800 Message-Id: <1564970604-10044-6-git-send-email-wanpengli@tencent.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1564970604-10044-1-git-send-email-wanpengli@tencent.com> References: <1564970604-10044-1-git-send-email-wanpengli@tencent.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Wanpeng Li Add pv tlb shootdown tracepoint. Cc: Paolo Bonzini Cc: Radim Krčmář Signed-off-by: Wanpeng Li --- arch/x86/kvm/trace.h | 19 +++++++++++++++++++ arch/x86/kvm/x86.c | 2 ++ 2 files changed, 21 insertions(+) diff --git a/arch/x86/kvm/trace.h b/arch/x86/kvm/trace.h index ce6ee34..84f32d3 100644 --- a/arch/x86/kvm/trace.h +++ b/arch/x86/kvm/trace.h @@ -1487,6 +1487,25 @@ TRACE_EVENT(kvm_pv_send_ipi, TP_printk("vector %d min 0x%x ipi_bitmap_low 0x%lx ipi_bitmap_high 0x%lx", __entry->vector, __entry->min, __entry->ipi_bitmap_low, __entry->ipi_bitmap_high) ); + +TRACE_EVENT(kvm_pv_tlb_flush, + TP_PROTO(unsigned int vcpu_id, bool need_flush_tlb), + TP_ARGS(vcpu_id, need_flush_tlb), + + TP_STRUCT__entry( + __field( unsigned int, vcpu_id ) + __field( bool, need_flush_tlb ) + ), + + TP_fast_assign( + __entry->vcpu_id = vcpu_id; + __entry->need_flush_tlb = need_flush_tlb; + ), + + TP_printk("vcpu %u need_flush_tlb %s", __entry->vcpu_id, + __entry->need_flush_tlb ? "true" : "false") +); + #endif /* _TRACE_KVM_H */ #undef TRACE_INCLUDE_PATH diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index f715efb..7a302cd 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -2452,6 +2452,8 @@ static void record_steal_time(struct kvm_vcpu *vcpu) * Doing a TLB flush here, on the guest's behalf, can avoid * expensive IPIs. */ + trace_kvm_pv_tlb_flush(vcpu->vcpu_id, + vcpu->arch.st.steal.preempted & KVM_VCPU_FLUSH_TLB); if (xchg(&vcpu->arch.st.steal.preempted, 0) & KVM_VCPU_FLUSH_TLB) kvm_vcpu_flush_tlb(vcpu, false); -- 2.7.4