From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753917AbcEWQrS (ORCPT ); Mon, 23 May 2016 12:47:18 -0400 Received: from mga02.intel.com ([134.134.136.20]:48071 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753804AbcEWQrQ (ORCPT ); Mon, 23 May 2016 12:47:16 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.26,356,1459839600"; d="scan'208";a="960600309" From: Jacob Pan To: LKML , Rafael Wysocki , Linux PM Cc: Srinivas Pandruvada , Prarit Bhargava , Jacob Pan Subject: [PATCH 2/2] powercap/rapl: reduce warning level Date: Mon, 23 May 2016 09:45:43 -0700 Message-Id: <1464021943-14915-3-git-send-email-jacob.jun.pan@linux.intel.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1464021943-14915-1-git-send-email-jacob.jun.pan@linux.intel.com> References: <1464021943-14915-1-git-send-email-jacob.jun.pan@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Since RAPL interface is not architectual, its enumeration depends on poking MSRs instead of using CPUID method. In KVM guest, RAPL driver probe will fail and emit the following message for every CPU: no valid rapl domains found in package This patch limit the warning to debug only. Still return ENODEV so that RAPL does not run on KVM guest. Signed-off-by: Jacob Pan --- drivers/powercap/intel_rapl.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/powercap/intel_rapl.c b/drivers/powercap/intel_rapl.c index a417e68..b0a2dc4 100644 --- a/drivers/powercap/intel_rapl.c +++ b/drivers/powercap/intel_rapl.c @@ -1324,7 +1324,7 @@ static int rapl_detect_domains(struct rapl_package *rp, int cpu) } rp->nr_domains = bitmap_weight(&rp->domain_map, RAPL_DOMAIN_MAX); if (!rp->nr_domains) { - pr_err("no valid rapl domains found in package %d\n", rp->id); + pr_debug("no valid rapl domains found in package %d\n", rp->id); ret = -ENODEV; goto done; } -- 1.9.1