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

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Message-ID: <tip-34a4cceb78e48c75d1b48b25352a3f3b2cc2b2da@git.kernel.org>
Date:	Tue, 29 Mar 2016 02:16:24 -0700
From:	tip-bot for Huang Rui <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	sherry.hurwitz@....com, tony.luck@...el.com, lenb@...nel.org,
	mingo@...nel.org, tglx@...utronix.de, ray.huang@....com,
	tony.li@....com, bp@...en8.de, peterz@...radead.org,
	fenghua.yu@...el.com, luto@...capital.net, bp@...e.de,
	rjw@...ysocki.net, linux-kernel@...r.kernel.org, hpa@...or.com,
	fengguang.wu@...el.com
Subject: [tip:x86/urgent] x86/cpu: Add advanced power management bits

Commit-ID:  34a4cceb78e48c75d1b48b25352a3f3b2cc2b2da
Gitweb:     http://git.kernel.org/tip/34a4cceb78e48c75d1b48b25352a3f3b2cc2b2da
Author:     Huang Rui <ray.huang@....com>
AuthorDate: Fri, 25 Mar 2016 10:08:40 +0800
Committer:  Thomas Gleixner <tglx@...utronix.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@...en8.de>
Signed-off-by: Huang Rui <ray.huang@....com>
Cc: Tony Li <tony.li@....com>
Cc: Fenghua Yu <fenghua.yu@...el.com>
Cc: Tony Luck <tony.luck@...el.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: "Rafael J. Wysocki" <rjw@...ysocki.net>
Cc: Andy Lutomirski <luto@...capital.net>
Cc: Fengguang Wu <fengguang.wu@...el.com>
Cc: Sherry Hurwitz <sherry.hurwitz@....com>
Cc: Borislav Petkov <bp@...e.de>
Cc: "Len Brown" <lenb@...nel.org>
Link: http://lkml.kernel.org/r/1458871720-3209-1-git-send-email-ray.huang@amd.com
Signed-off-by: Thomas Gleixner <tglx@...utronix.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 */
 };