linux-kernel - Re: [PATCH] x86/cpu: add some advanced power management bits

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Message-ID: <20160325113702.GA26111@pd.tnic>
Date:	Fri, 25 Mar 2016 12:37:02 +0100
From:	Borislav Petkov <bp@...e.de>
To:	Huang Rui <ray.huang@....com>
Cc:	Thomas Gleixner <tglx@...utronix.de>, Len Brown <lenb@...nel.org>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Ingo Molnar <mingo@...nel.org>,
	"H. Peter Anvin" <hpa@...or.com>,
	Fenghua Yu <fenghua.yu@...el.com>,
	Tony Luck <tony.luck@...el.com>,
	Andy Lutomirski <luto@...capital.net>,
	Peter Zijlstra <peterz@...radead.org>,
	linux-kernel@...r.kernel.org, x86@...nel.org,
	Fengguang Wu <fengguang.wu@...el.com>,
	Sherry Hurwitz <sherry.hurwitz@....com>,
	Tony Li <tony.li@....com>
Subject: Re: [PATCH] x86/cpu: add some advanced power management bits

On Fri, Mar 25, 2016 at 10:08:40AM +0800, Huang Rui wrote:
> Bit 11 of CPUID 8000_0007 edx is processor feedback interface.
> Bit 12 of CPUID 8000_0007 edx is accumulated power.
> 
> So this patch fixes the output of cpuinfo, and add some new names to
> make it more meaningful.
> 
> Reported-by: Borislav Petkov <bp@...en8.de>
> Signed-off-by: Huang Rui <ray.huang@....com>
> ---
>  arch/x86/kernel/cpu/powerflags.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/arch/x86/kernel/cpu/powerflags.c b/arch/x86/kernel/cpu/powerflags.c
> index 31f0f33..1dd8294 100644
> --- a/arch/x86/kernel/cpu/powerflags.c
> +++ b/arch/x86/kernel/cpu/powerflags.c
> @@ -18,4 +18,6 @@ const char *const x86_power_flags[32] = {
>  	"",	/* tsc invariant mapped to constant_tsc */
>  	"cpb",  /* core performance boost */
>  	"eff_freq_ro", /* Readonly aperf/mperf */
> +	"proc_feedback", /* processor feedback interface */
> +	"acc_power", /* accumulated power mechanism */
>  };
> --

Tested-by: Borislav Petkov <bp@...e.de>

-- 
Regards/Gruss,
    Boris.

SUSE Linux GmbH, GF: Felix Imendörffer, Jane Smithard, Graham Norton, HRB 21284 (AG Nürnberg)
--