From owner-svn-src-head@freebsd.org Mon Jan 27 06:04:33 2020 Return-Path: Delivered-To: svn-src-head@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 82A12232CAA; Mon, 27 Jan 2020 06:04:33 +0000 (UTC) (envelope-from cem@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 485fN12sklz3ymq; Mon, 27 Jan 2020 06:04:33 +0000 (UTC) (envelope-from cem@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 5DA0B5976; Mon, 27 Jan 2020 06:04:33 +0000 (UTC) (envelope-from cem@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id 00R64XQc067693; Mon, 27 Jan 2020 06:04:33 GMT (envelope-from cem@FreeBSD.org) Received: (from cem@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id 00R64Xqj067692; Mon, 27 Jan 2020 06:04:33 GMT (envelope-from cem@FreeBSD.org) Message-Id: <202001270604.00R64Xqj067692@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: cem set sender to cem@FreeBSD.org using -f From: Conrad Meyer Date: Mon, 27 Jan 2020 06:04:33 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r357165 - head/sys/x86/cpufreq X-SVN-Group: head X-SVN-Commit-Author: cem X-SVN-Commit-Paths: head/sys/x86/cpufreq X-SVN-Commit-Revision: 357165 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 27 Jan 2020 06:04:33 -0000 Author: cem Date: Mon Jan 27 06:04:32 2020 New Revision: 357165 URL: https://svnweb.freebsd.org/changeset/base/357165 Log: hwpstate(4): Log a debug line when throttled If we're going to throttle user requested P-states, we should at least produce a debug log line indicating the surprising behavior. PR: inspired by 234733 Modified: head/sys/x86/cpufreq/hwpstate_amd.c Modified: head/sys/x86/cpufreq/hwpstate_amd.c ============================================================================== --- head/sys/x86/cpufreq/hwpstate_amd.c Mon Jan 27 06:03:36 2020 (r357164) +++ head/sys/x86/cpufreq/hwpstate_amd.c Mon Jan 27 06:04:32 2020 (r357165) @@ -173,8 +173,12 @@ hwpstate_goto_pstate(device_t dev, int id) /* get the current pstate limit */ msr = rdmsr(MSR_AMD_10H_11H_LIMIT); limit = AMD_10H_11H_GET_PSTATE_LIMIT(msr); - if (limit > id) + if (limit > id) { + HWPSTATE_DEBUG(dev, + "Restricting requested P%d to P%d due to HW limit\n", id, + limit); id = limit; + } cpu = curcpu; HWPSTATE_DEBUG(dev, "setting P%d-state on cpu%d\n", id, cpu);