The patch titled
x86: unify APERF/MPERF support
has been added to the -mm tree. Its filename is
x86-unify-aperf-mperf-support.patch
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------------------------------------------------------
Subject: x86: unify APERF/MPERF support
From: Borislav Petkov <borislav.petkov@xxxxxxx>
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@xxxxxxx>
Reviewed-by: Thomas Renninger <trenn@xxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: "H. Peter Anvin" <hpa@xxxxxxxxx>
Cc: Dave Jones <davej@xxxxxxxxxxxxxxxxx>
Cc: Mark Langsdorf <mark.langsdorf@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/x86/kernel/cpu/addon_cpuid_features.c | 8 ++++++++
arch/x86/kernel/cpu/intel.c | 6 ------
2 files changed, 8 insertions(+), 6 deletions(-)
diff -puN arch/x86/kernel/cpu/addon_cpuid_features.c~x86-unify-aperf-mperf-support arch/x86/kernel/cpu/addon_cpuid_features.c
--- a/arch/x86/kernel/cpu/addon_cpuid_features.c~x86-unify-aperf-mperf-support
+++ a/arch/x86/kernel/cpu/addon_cpuid_features.c
@@ -54,6 +54,14 @@ void __cpuinit init_scattered_cpuid_feat
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 -puN arch/x86/kernel/cpu/intel.c~x86-unify-aperf-mperf-support arch/x86/kernel/cpu/intel.c
--- a/arch/x86/kernel/cpu/intel.c~x86-unify-aperf-mperf-support
+++ a/arch/x86/kernel/cpu/intel.c
@@ -352,12 +352,6 @@ static void __cpuinit init_intel(struct
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) {
_
Patches currently in -mm which might be from borislav.petkov@xxxxxxx are
x86-cpu-add-amd-core-boosting-feature-flag-to-proc-cpuinfo.patch
powernow-k8-add-core-performance-boost-support.patch
x86-unify-aperf-mperf-support.patch
cpufreq-add-aperf-mperf-support-for-amd-processors.patch
powernow-k8-fix-frequency-reporting.patch
cpufreq-unify-sysfs-attribute-definition-macros.patch
x86-add-optimized-popcnt-variants.patch
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