From patchwork Fri Jul 5 17:10:22 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yi Wang X-Patchwork-Id: 11033107 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 41B9B112C for ; Fri, 5 Jul 2019 17:12:22 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 2842C28A5A for ; Fri, 5 Jul 2019 17:12:22 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 19B6228A94; Fri, 5 Jul 2019 17:12:22 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id CD26628A5A for ; Fri, 5 Jul 2019 17:12:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727656AbfGERMQ (ORCPT ); Fri, 5 Jul 2019 13:12:16 -0400 Received: from mxhk.zte.com.cn ([63.217.80.70]:29402 "EHLO mxhk.zte.com.cn" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726903AbfGERMQ (ORCPT ); Fri, 5 Jul 2019 13:12:16 -0400 Received: from mse-fl2.zte.com.cn (unknown [10.30.14.239]) by Forcepoint Email with ESMTPS id 888BA60F1E79325F9FB0; Sat, 6 Jul 2019 01:12:14 +0800 (CST) Received: from notes_smtp.zte.com.cn ([10.30.1.239]) by mse-fl2.zte.com.cn with ESMTP id x65HC1g4011035; Sat, 6 Jul 2019 01:12:01 +0800 (GMT-8) (envelope-from wang.yi59@zte.com.cn) Received: from fox-host8.localdomain ([10.74.120.8]) by szsmtp06.zte.com.cn (Lotus Domino Release 8.5.3FP6) with ESMTP id 2019070601124094-2115158 ; Sat, 6 Jul 2019 01:12:40 +0800 From: Yi Wang To: pbonzini@redhat.com Cc: rkrcmar@redhat.com, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, hpa@zytor.com, x86@kernel.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, xue.zhihong@zte.com.cn, wang.yi59@zte.com.cn, up2wing@gmail.com, wang.liang82@zte.com.cn Subject: [PATCH] kvm: x86: some tsc debug cleanup Date: Sat, 6 Jul 2019 01:10:22 +0800 Message-Id: <1562346622-1003-1-git-send-email-wang.yi59@zte.com.cn> X-Mailer: git-send-email 1.8.3.1 X-MIMETrack: Itemize by SMTP Server on SZSMTP06/server/zte_ltd(Release 8.5.3FP6|November 21, 2013) at 2019-07-06 01:12:41, Serialize by Router on notes_smtp/zte_ltd(Release 9.0.1FP7|August 17, 2016) at 2019-07-06 01:12:07, Serialize complete at 2019-07-06 01:12:07 X-MAIL: mse-fl2.zte.com.cn x65HC1g4011035 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP There are some pr_debug in TSC code, which may have been no use, so remove them as Paolo suggested. Signed-off-by: Yi Wang --- arch/x86/kvm/x86.c | 8 -------- 1 file changed, 8 deletions(-) diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index fafd81d..86f9861 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -1518,9 +1518,6 @@ static void kvm_get_time_scale(uint64_t scaled_hz, uint64_t base_hz, *pshift = shift; *pmultiplier = div_frac(scaled64, tps32); - - pr_debug("%s: base_hz %llu => %llu, shift %d, mul %u\n", - __func__, base_hz, scaled_hz, shift, *pmultiplier); } #ifdef CONFIG_X86_64 @@ -1763,12 +1760,10 @@ void kvm_write_tsc(struct kvm_vcpu *vcpu, struct msr_data *msr) vcpu->arch.virtual_tsc_khz == kvm->arch.last_tsc_khz) { if (!kvm_check_tsc_unstable()) { offset = kvm->arch.cur_tsc_offset; - pr_debug("kvm: matched tsc offset for %llu\n", data); } else { u64 delta = nsec_to_cycles(vcpu, elapsed); data += delta; offset = kvm_compute_tsc_offset(vcpu, data); - pr_debug("kvm: adjusted tsc offset by %llu\n", delta); } matched = true; already_matched = (vcpu->arch.this_tsc_generation == kvm->arch.cur_tsc_generation); @@ -1787,8 +1782,6 @@ void kvm_write_tsc(struct kvm_vcpu *vcpu, struct msr_data *msr) kvm->arch.cur_tsc_write = data; kvm->arch.cur_tsc_offset = offset; matched = false; - pr_debug("kvm: new tsc generation %llu, clock %llu\n", - kvm->arch.cur_tsc_generation, data); } /* @@ -6857,7 +6850,6 @@ static void kvm_timer_init(void) cpufreq_register_notifier(&kvmclock_cpufreq_notifier_block, CPUFREQ_TRANSITION_NOTIFIER); } - pr_debug("kvm: max_tsc_khz = %ld\n", max_tsc_khz); cpuhp_setup_state(CPUHP_AP_X86_KVM_CLK_ONLINE, "x86/kvm/clk:online", kvmclock_cpu_online, kvmclock_cpu_down_prep);