x86: Unify APERF/MPERF support

Initialize this CPUID flag feature in common code. It could be made a
standalone function later, maybe, if more functionality is duplicated.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
LKML-Reference: <1270065406-1814-4-git-send-email-bp@amd64.org>
Reviewed-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>

2 files changed, 8 insertions, 6 deletions

diff --git a/arch/x86/kernel/cpu/addon_cpuid_features.c b/arch/x86/kernel/cpu/addon_cpuid_features.c
index ead2a1cfa570..fd1fc1902a47 100644
--- a/arch/x86/kernel/cpu/addon_cpuid_features.c
+++ b/arch/x86/kernel/cpu/addon_cpuid_features.c
@@ -54,6 +54,14 @@ void __cpuinit init_scattered_cpuid_features(struct cpuinfo_x86 *c)
                 if (regs[cb->reg] & (1 << cb->bit))
                         set_cpu_cap(c, cb->feature);
         }
+
+        /*
+         * common AMD/Intel features
+         */
+        if (c->cpuid_level >= 6) {
+                if (cpuid_ecx(6) & 0x1)
+                        set_cpu_cap(c, X86_FEATURE_APERFMPERF);
+        }
 }
 
 /* leaf 0xb SMT level */
diff --git a/arch/x86/kernel/cpu/intel.c b/arch/x86/kernel/cpu/intel.c
index 7e1cca13af35..3830258a5f53 100644
--- a/arch/x86/kernel/cpu/intel.c
+++ b/arch/x86/kernel/cpu/intel.c
@@ -352,12 +352,6 @@ static void __cpuinit init_intel(struct cpuinfo_x86 *c)
                         set_cpu_cap(c, X86_FEATURE_ARCH_PERFMON);
         }
 
-        if (c->cpuid_level > 6) {
-                unsigned ecx = cpuid_ecx(6);
-                if (ecx & 0x01)
-                        set_cpu_cap(c, X86_FEATURE_APERFMPERF);
-        }
-
         if (cpu_has_xmm2)
                 set_cpu_cap(c, X86_FEATURE_LFENCE_RDTSC);
         if (cpu_has_ds) {