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=-9.6 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 D09D1C742A5 for ; Fri, 12 Jul 2019 02:54:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A311321530 for ; Fri, 12 Jul 2019 02:54:53 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="rs/u0q0z" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729287AbfGLCyu (ORCPT ); Thu, 11 Jul 2019 22:54:50 -0400 Received: from mail-pg1-f195.google.com ([209.85.215.195]:39572 "EHLO mail-pg1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729051AbfGLCys (ORCPT ); Thu, 11 Jul 2019 22:54:48 -0400 Received: by mail-pg1-f195.google.com with SMTP id u17so3844659pgi.6; Thu, 11 Jul 2019 19:54:48 -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=hlJ5SZ08CSnSSRFOp53QvEnZVvpxlaIqKCaeg2qBZWQ=; b=rs/u0q0zlimgMudRG30frHH2GJkMqmSWVIoqVgt5q7BczEbHlSVxE+Yi1Zn6yJQllx 2yBc3L//ezoyamlGIZVw5GkVy1qMBxDJ1UBf2mw/5bV+80FWddBBxBx5DpxrF2vUWhrn wz2EH3dz0knCpHKuNQBOUMkq/z0KdMQDl9rkSBvtM5FwO7kloj9XOMF/AYcU9OqbgU1M d5frBbF0G3ObdVF1PNasNKuKRjcU/HjJHdSVhGkBXHFY7/QlcwvrXwI3BvJcRBtH4a4m NCSo2GRD5WU1/JZ7+sV5RYs7kitKJ8QaFobRAqam3qN+Uh2EKNlijxEKBzqjEIW5jdMv +XtQ== 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=hlJ5SZ08CSnSSRFOp53QvEnZVvpxlaIqKCaeg2qBZWQ=; b=pcjhw/UL8WD6tIRflnI8zQUlE7koToDkxanmK46n+vGc1e/6Mod4ZGQliWD1YVH6aP +rSTVuH7qBSFat9JlGqWWFpVFvaY/T4qm5gxCHzGDQWJl9bN8cdlKO5B5Nio+KOkyvP6 WumlmOe6tFaTcsgylZqSzU+J12dAQSyEjO29T7FQy90H0MvA3LQqgDckkrYwWkYHgyQf 9f+27CPmS5Ylja7Dn23TjXlfSNKu3HFGBpuntTZvfdlpW3wy9VOV/akhXKoJX19BOg2S 5YSs0botN3CT579Q54zwkGKx4u+/dKzFrfXFS4KlvDSdG6j0U5VVNefIHcReSBbKwokf THPQ== X-Gm-Message-State: APjAAAUu+TwRziKoqoY4kvWAvK4OhRmeHJEgtWfplOEA4Ruw50Hapnnf 0Gz45jareArXN3uarzwrHgERAdTTyEA= X-Google-Smtp-Source: APXvYqyo6HA6DzVTwivRsf7q25xhytE4Nxc0FBSMKzXSSas3ujuYC1848eLpvDnP/dr2hScB7yX8mA== X-Received: by 2002:a63:d30f:: with SMTP id b15mr7882555pgg.341.1562900087624; Thu, 11 Jul 2019 19:54:47 -0700 (PDT) Received: from localhost.localdomain ([203.205.141.123]) by smtp.googlemail.com with ESMTPSA id n26sm7786630pfa.83.2019.07.11.19.54.46 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Thu, 11 Jul 2019 19:54:47 -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 2/2] KVM: X86: Add pv tlb shootdown tracepoint Date: Fri, 12 Jul 2019 10:54:40 +0800 Message-Id: <1562900080-20798-2-git-send-email-wanpengli@tencent.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1562900080-20798-1-git-send-email-wanpengli@tencent.com> References: <1562900080-20798-1-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 bc1688e..a7a0514 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -2458,6 +2458,8 @@ 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