From: Huang Rui <ray.huang@amd.com>
To: Borislav Petkov <bp@suse.de>,
Thomas Gleixner <tglx@linutronix.de>,
"Len Brown" <lenb@kernel.org>,
"Rafael J. Wysocki" <rjw@rjwysocki.net>,
"Ingo Molnar" <mingo@kernel.org>,
"H. Peter Anvin" <hpa@zytor.com>,
Fenghua Yu <fenghua.yu@intel.com>,
Tony Luck <tony.luck@intel.com>,
Andy Lutomirski <luto@amacapital.net>,
Peter Zijlstra <peterz@infradead.org>
Cc: <linux-kernel@vger.kernel.org>, <x86@kernel.org>,
Fengguang Wu <fengguang.wu@intel.com>,
Sherry Hurwitz <sherry.hurwitz@amd.com>,
Tony Li <tony.li@amd.com>, Huang Rui <ray.huang@amd.com>
Subject: [PATCH] x86/cpu: add some advanced power management bits
Date: Fri, 25 Mar 2016 10:08:40 +0800 [thread overview]
Message-ID: <1458871720-3209-1-git-send-email-ray.huang@amd.com> (raw)
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
next reply other threads:[~2016-03-25 2:08 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-25 2:08 Huang Rui [this message]
2016-03-25 11:37 ` [PATCH] x86/cpu: add some advanced power management bits Borislav Petkov
2016-03-29 9:16 ` [tip:x86/urgent] x86/cpu: Add " tip-bot for Huang Rui
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