linux-kernel - [tip:x86/urgent] x86, mce: Clean up thermal init by introducing intel_thermal

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Message-ID: <tip-70fe440718d9f42bf963c2cffe12008eb5556165@git.kernel.org>
Date:	Mon, 14 Dec 2009 09:49:30 GMT
From:	tip-bot for Hidetoshi Seto <seto.hidetoshi@...fujitsu.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...hat.com,
	gorcunov@...nvz.org, seto.hidetoshi@...fujitsu.com,
	tglx@...utronix.de, mingo@...e.hu
Subject: [tip:x86/urgent] x86, mce: Clean up thermal init by introducing intel_thermal_supported()

Commit-ID:  70fe440718d9f42bf963c2cffe12008eb5556165
Gitweb:     http://git.kernel.org/tip/70fe440718d9f42bf963c2cffe12008eb5556165
Author:     Hidetoshi Seto <seto.hidetoshi@...fujitsu.com>
AuthorDate: Mon, 14 Dec 2009 17:57:00 +0900
Committer:  Ingo Molnar <mingo@...e.hu>
CommitDate: Mon, 14 Dec 2009 10:38:41 +0100

x86, mce: Clean up thermal init by introducing intel_thermal_supported()

It looks better to have a common function. No change in functionality.

Signed-off-by: Hidetoshi Seto <seto.hidetoshi@...fujitsu.com>
Cc: Cyrill Gorcunov <gorcunov@...nvz.org>
LKML-Reference: <4B25FDDC.407@...fujitsu.com>
Signed-off-by: Ingo Molnar <mingo@...e.hu>
Cc: Cyrill Gorcunov <gorcunov@...nvz.org>
---
 arch/x86/kernel/cpu/mcheck/therm_throt.c |   17 ++++++++++++-----
 1 files changed, 12 insertions(+), 5 deletions(-)

diff --git a/arch/x86/kernel/cpu/mcheck/therm_throt.c b/arch/x86/kernel/cpu/mcheck/therm_throt.c
index 0a9b577..81c499e 100644
--- a/arch/x86/kernel/cpu/mcheck/therm_throt.c
+++ b/arch/x86/kernel/cpu/mcheck/therm_throt.c
@@ -256,6 +256,16 @@ asmlinkage void smp_thermal_interrupt(struct pt_regs *regs)
 	ack_APIC_irq();
 }
 
+/* Thermal monitoring depends on APIC, ACPI and clock modulation */
+static int intel_thermal_supported(struct cpuinfo_x86 *c)
+{
+	if (!cpu_has_apic)
+		return 0;
+	if (!cpu_has(c, X86_FEATURE_ACPI) || !cpu_has(c, X86_FEATURE_ACC))
+		return 0;
+	return 1;
+}
+
 void __init mcheck_intel_therm_init(void)
 {
 	/*
@@ -263,8 +273,7 @@ void __init mcheck_intel_therm_init(void)
 	 * LVT value on BSP and use that value to restore APs' thermal LVT
 	 * entry BIOS programmed later
 	 */
-	if (cpu_has(&boot_cpu_data, X86_FEATURE_ACPI) &&
-		cpu_has(&boot_cpu_data, X86_FEATURE_ACC))
+	if (intel_thermal_supported(&boot_cpu_data))
 		lvtthmr_init = apic_read(APIC_LVTTHMR);
 }
 
@@ -274,9 +283,7 @@ void intel_init_thermal(struct cpuinfo_x86 *c)
 	int tm2 = 0;
 	u32 l, h;
 
-	/* Thermal monitoring depends on APIC, ACPI and clock modulation */
-	if (!cpu_has_apic || !cpu_has(c, X86_FEATURE_ACPI) ||
-		!cpu_has(c, X86_FEATURE_ACC))
+	if (!intel_thermal_supported(c))
 		return;
 
 	/*
--
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