diff mbox

powercap/rapl: lower warning level for domain detection

Message ID 1409288168-6537-1-git-send-email-jacob.jun.pan@linux.intel.com (mailing list archive)
State Superseded, archived
Headers show

Commit Message

Jacob Pan Aug. 29, 2014, 4:56 a.m. UTC
Many CPUs do not support complete set of RAPL domains, as a
result this detection failed message is very misleading and
annoying. So lower the warning message to info and reword.

Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
---
 drivers/powercap/intel_rapl.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Rafael J. Wysocki Sept. 1, 2014, 11:48 p.m. UTC | #1
On Thursday, August 28, 2014 09:56:08 PM Jacob Pan wrote:
> Many CPUs do not support complete set of RAPL domains, as a
> result this detection failed message is very misleading and
> annoying. So lower the warning message to info and reword.
> 
> Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com>

What about printing a (info-level) message if the RAPL domain *is*
supported?  That surely is more interesting?

> ---
>  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 b1cda6f..0b282e7 100644
> --- a/drivers/powercap/intel_rapl.c
> +++ b/drivers/powercap/intel_rapl.c
> @@ -1169,7 +1169,7 @@ static int rapl_detect_domains(struct rapl_package *rp, int cpu)
>  		if (!rapl_check_domain(cpu, i))
>  			rp->domain_map |= 1 << i;
>  		else
> -			pr_warn("RAPL domain %s detection failed\n",
> +			pr_info("RAPL domain %s not supported\n",
>  				rapl_domain_names[i]);
>  	}
>  	rp->nr_domains = bitmap_weight(&rp->domain_map,	RAPL_DOMAIN_MAX);
>
Jacob Pan Sept. 2, 2014, 5:57 p.m. UTC | #2
On Tue, 02 Sep 2014 01:48:40 +0200
"Rafael J. Wysocki" <rjw@rjwysocki.net> wrote:

> On Thursday, August 28, 2014 09:56:08 PM Jacob Pan wrote:
> > Many CPUs do not support complete set of RAPL domains, as a
> > result this detection failed message is very misleading and
> > annoying. So loweab Pan <jacob.jun.pan@linux.intel.com>
> 
> What about printing a (info-level) message if the RAPL domain *is*
> supported?  That surely is more interesting?
> 
yes, that is better. just sent out an updated patch with a different
Subject: [PATCH] powercap/rapl: change domain detection message

Thanks,

Jacob
> > ---
> >  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 b1cda6f..0b282e7 100644
> > --- a/drivers/powercap/intel_rapl.c
> > +++ b/drivers/powercap/intel_rapl.c
> > @@ -1169,7 +1169,7 @@ static int rapl_detect_domains(struct
> > rapl_package *rp, int cpu) if (!rapl_check_domain(cpu, i))
> >  			rp->domain_map |= 1 << i;
> >  		else
> > -			pr_warn("RAPL domain %s detection
> > failed\n",
> > +			pr_info("RAPL domain %s not supported\n",
> >  				rapl_domain_names[i]);
> >  	}
> >  	rp->nr_domains = bitmap_weight(&rp->domain_map,
> > RAPL_DOMAIN_MAX);
> > 
> 

[Jacob Pan]
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diff mbox

Patch

diff --git a/drivers/powercap/intel_rapl.c b/drivers/powercap/intel_rapl.c
index b1cda6f..0b282e7 100644
--- a/drivers/powercap/intel_rapl.c
+++ b/drivers/powercap/intel_rapl.c
@@ -1169,7 +1169,7 @@  static int rapl_detect_domains(struct rapl_package *rp, int cpu)
 		if (!rapl_check_domain(cpu, i))
 			rp->domain_map |= 1 << i;
 		else
-			pr_warn("RAPL domain %s detection failed\n",
+			pr_info("RAPL domain %s not supported\n",
 				rapl_domain_names[i]);
 	}
 	rp->nr_domains = bitmap_weight(&rp->domain_map,	RAPL_DOMAIN_MAX);