Attachment 1241315 Details for Bug 1178491 – RHEL PATCH 1/1

[patch] RHEL PATCH 1/1

0001-powercap-RAPL-reduce-message-loglevel.patch (text/plain), 1.85 KB, created by Prarit Bhargava on 2017-01-16 16:21:18 UTC

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Creator: Prarit Bhargava

Created: 2017-01-16 16:21:18 UTC

Size: 1.85 KB

patch

obsolete

>From e9546499f2538948fd731b0ace158063a0b038cc Mon Sep 17 00:00:00 2001
>From: Prarit Bhargava <prarit@redhat.com>
>Date: Mon, 16 Jan 2017 11:00:18 -0500
>Subject: [1/1] powercap / RAPL: reduce message loglevel
>
>Bugzilla: http://bugzilla.redhat.com/1178491
>
>Build info:
>Date: Mon Jan 16 11:11:21 EST 2017
>Build OS: Red Hat Enterprise Linux Server release 7.4 Beta (Maipo)
>System name: intel-brickland-07.khw.lab.eng.bos.redhat.com with -j96
>Built on: kernel-3.10.0-534.el7
>Arch built: ppc64 s390x x86_64
>
>commit e1a27e87a35cd6bb1087bd8f95a4be5a11e95f76
>Author: Jacob Pan <jacob.jun.pan@linux.intel.com>
>Date:   Mon May 23 09:45:43 2016 -0700
>
>    powercap / RAPL: reduce message loglevel
>
>    Since the RAPL interface is not architectual, its enumeration depends
>    on poking MSRs instead of using the CPUID method.
>
>    In KVM guests, the RAPL driver probe will fail and emit the following
>    message for every CPU: "no valid rapl domains found in package"
>
>    This patch converts the warning to a debug message only (still return
>    -ENODEV so that RAPL does not run in KVM guests).
>
>    Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
>    [ rjw: Subject & changelog ]
>    Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
>---
> 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 a03afe5d6726..cf634c4ed52a 100644
>--- a/drivers/powercap/intel_rapl.c
>+++ b/drivers/powercap/intel_rapl.c
>@@ -1338,7 +1338,7 @@ 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;
> 	}
>-- 
>1.7.9.3
>

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