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authorHuang Rui <ray.huang@amd.com>2016-03-25 05:08:40 +0300
committerThomas Gleixner <tglx@linutronix.de>2016-03-29 12:12:11 +0300
commit34a4cceb78e48c75d1b48b25352a3f3b2cc2b2da (patch)
treed23977f1495c4fbd93f4790619155e8b1f837b78
parent5f870a3f7188065e13efafe1faeb01c136173bc4 (diff)
downloadlinux-34a4cceb78e48c75d1b48b25352a3f3b2cc2b2da.tar.xz
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>
-rw-r--r--arch/x86/kernel/cpu/powerflags.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/powerflags.c b/arch/x86/kernel/cpu/powerflags.c
index 31f0f335ed22..1dd8294fd730 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 */
};