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=-2.0 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=no 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 EB130CA9EC2 for ; Mon, 28 Oct 2019 16:43:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C0EB321744 for ; Mon, 28 Oct 2019 16:43:51 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="dJwW5ArC" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2403862AbfJ1Qnu (ORCPT ); Mon, 28 Oct 2019 12:43:50 -0400 Received: from bombadil.infradead.org ([198.137.202.133]:40796 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1733000AbfJ1Qnu (ORCPT ); Mon, 28 Oct 2019 12:43:50 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=In-Reply-To:Content-Type:MIME-Version :References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=g5yZ/J7rj95A/9mEJqR2HV55CqslV5uoj7lv7XPA0rc=; b=dJwW5ArCzatGekooY+ha+CWwu ThNNd7ykejxHNKbVeSj0xbgKJfcUO8ZrxVjr9jxoAjrHZbyaNWo3tFg6xpfhXReTENzgkalslfbLK G6xld+FPgAKkTO2yg2lMv1wLIZaKF0adCUafWcFBU3yryjAdGKUXp2Im4PBn8JjpACBBfg9cu7VlB bZqHKbWR/VdDj4Xb5yS9yekFFPh6uiwbffZbP+nJSKvUl+ufQWu6LLWYpGvGhDtKKoJapaIZnW413 G5Ht3EEUAkxGVT/jHWpLOmxMICqmGFAS2T+pFfHKIKlKfdEZjoC9hx96neWSyp05WWQ1wMBJnTqTU P6tgWCi6Q==; Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=noisy.programming.kicks-ass.net) by bombadil.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1iP874-0001H0-Ak; Mon, 28 Oct 2019 16:43:26 +0000 Received: from hirez.programming.kicks-ass.net (hirez.programming.kicks-ass.net [192.168.1.225]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by noisy.programming.kicks-ass.net (Postfix) with ESMTPS id D3E95306098; Mon, 28 Oct 2019 17:42:23 +0100 (CET) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id 31B0D2B400ACC; Mon, 28 Oct 2019 17:43:24 +0100 (CET) Date: Mon, 28 Oct 2019 17:43:24 +0100 From: Peter Zijlstra To: Like Xu Cc: Paolo Bonzini , Sean Christopherson , Jim Mattson , Wanpeng Li , Alexander Shishkin , Arnaldo Carvalho de Melo , Borislav Petkov , Ingo Molnar , Jiri Olsa , Joerg Roedel , Namhyung Kim , Thomas Gleixner , Vitaly Kuznetsov , kan.liang@intel.com, wei.w.wang@intel.com, linux-kernel@vger.kernel.org, kvm@vger.kernel.org Subject: Re: [PATCH v4 0/6] KVM: x86/vPMU: Efficiency optimization by reusing last created perf_event Message-ID: <20191028164324.GJ4097@hirez.programming.kicks-ass.net> References: <20191027105243.34339-1-like.xu@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20191027105243.34339-1-like.xu@linux.intel.com> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, Oct 27, 2019 at 06:52:37PM +0800, Like Xu wrote: > For perf subsystem, please help review first two patches. > Like Xu (6): > perf/core: Provide a kernel-internal interface to recalibrate event > period > perf/core: Provide a kernel-internal interface to pause perf_event Acked-by: Peter Zijlstra (Intel)