linux-kernel - [tip:x86/cpu] x86, cpu: Make APERF/MPERF a normal table-driven flag

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Message-ID: <tip-097c1bd5673edaf2a162724636858b71f658fdd2@git.kernel.org>
Date:	Mon, 3 May 2010 23:21:41 GMT
From:	"tip-bot for H. Peter Anvin" <hpa@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...hat.com,
	trenn@...e.de, tglx@...utronix.de, borislav.petkov@....com
Subject: [tip:x86/cpu] x86, cpu: Make APERF/MPERF a normal table-driven flag

Commit-ID:  097c1bd5673edaf2a162724636858b71f658fdd2
Gitweb:     http://git.kernel.org/tip/097c1bd5673edaf2a162724636858b71f658fdd2
Author:     H. Peter Anvin <hpa@...or.com>
AuthorDate: Mon, 3 May 2010 15:49:31 -0700
Committer:  H. Peter Anvin <hpa@...or.com>
CommitDate: Mon, 3 May 2010 15:49:31 -0700

x86, cpu: Make APERF/MPERF a normal table-driven flag

APERF/MPERF can be handled via the table like all the other scattered
CPU flags.

Signed-off-by: H. Peter Anvin <hpa@...or.com>
Cc: Thomas Renninger <trenn@...e.de>
Cc: Borislav Petkov <borislav.petkov@....com>
LKML-Reference: <1270065406-1814-4-git-send-email-bp@...64.org>
---
 arch/x86/kernel/cpu/addon_cpuid_features.c |   23 ++++++++---------------
 1 files changed, 8 insertions(+), 15 deletions(-)

diff --git a/arch/x86/kernel/cpu/addon_cpuid_features.c b/arch/x86/kernel/cpu/addon_cpuid_features.c
index fd1fc19..10fa568 100644
--- a/arch/x86/kernel/cpu/addon_cpuid_features.c
+++ b/arch/x86/kernel/cpu/addon_cpuid_features.c
@@ -30,13 +30,14 @@ void __cpuinit init_scattered_cpuid_features(struct cpuinfo_x86 *c)
 	const struct cpuid_bit *cb;
 
 	static const struct cpuid_bit __cpuinitconst cpuid_bits[] = {
-		{ X86_FEATURE_IDA,   CR_EAX, 1, 0x00000006 },
-		{ X86_FEATURE_ARAT,  CR_EAX, 2, 0x00000006 },
-		{ X86_FEATURE_CPB,   CR_EDX, 9, 0x80000007 },
-		{ X86_FEATURE_NPT,   CR_EDX, 0, 0x8000000a },
-		{ X86_FEATURE_LBRV,  CR_EDX, 1, 0x8000000a },
-		{ X86_FEATURE_SVML,  CR_EDX, 2, 0x8000000a },
-		{ X86_FEATURE_NRIPS, CR_EDX, 3, 0x8000000a },
+		{ X86_FEATURE_IDA,   		CR_EAX, 1, 0x00000006 },
+		{ X86_FEATURE_ARAT,  		CR_EAX, 2, 0x00000006 },
+		{ X86_FEATURE_APERFMPERF,	CR_ECX, 0, 0x00000006 },
+		{ X86_FEATURE_CPB,   		CR_EDX, 9, 0x80000007 },
+		{ X86_FEATURE_NPT,   		CR_EDX, 0, 0x8000000a },
+		{ X86_FEATURE_LBRV,  		CR_EDX, 1, 0x8000000a },
+		{ X86_FEATURE_SVML,  		CR_EDX, 2, 0x8000000a },
+		{ X86_FEATURE_NRIPS, 		CR_EDX, 3, 0x8000000a },
 		{ 0, 0, 0, 0 }
 	};
 
@@ -54,14 +55,6 @@ 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 */
--
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