[PATCH] x86/cpu: add some advanced power management bits

[PATCH] x86/cpu: add some advanced power management bits

[Huang Rui]

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@alien8.de>
Signed-off-by: Huang Rui <ray.huang@amd.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 */
 };
-- 
1.9.1

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

[Borislav Petkov]

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@alien8.de>
> Signed-off-by: Huang Rui <ray.huang@amd.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@suse.de>

-- 
Regards/Gruss,
    Boris.

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

[tip:x86/urgent] x86/cpu: Add advanced power management bits

[tip-bot for Huang Rui]

Commit-ID:  34a4cceb78e48c75d1b48b25352a3f3b2cc2b2da
Gitweb:     http://git.kernel.org/tip/34a4cceb78e48c75d1b48b25352a3f3b2cc2b2da
Author:     Huang Rui <ray.huang@amd.com>
AuthorDate: Fri, 25 Mar 2016 10:08:40 +0800
Committer:  Thomas Gleixner <tglx@linutronix.de>
CommitDate: Tue, 29 Mar 2016 11:12:11 +0200

x86/cpu: Add advanced power management bits

Bit 11 of CPUID 8000_0007 edx is processor feedback interface.
Bit 12 of CPUID 8000_0007 edx is accumulated power.

Print proper names in proc/cpuinfo

Reported-and-tested-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Huang Rui <ray.huang@amd.com>
Cc: Tony Li <tony.li@amd.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Fengguang Wu <fengguang.wu@intel.com>
Cc: Sherry Hurwitz <sherry.hurwitz@amd.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: "Len Brown" <lenb@kernel.org>
Link: http://lkml.kernel.org/r/1458871720-3209-1-git-send-email-ray.huang@amd.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

---
 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 */
 };