linux-kernel - [tip:x86/apic] x86/apic: Always define nox2apic and define it as initdata

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Message-ID: <tip-dc9788f40a769d967de3eb5a7aee8c1a70094d32@git.kernel.org>
Date:	Mon, 10 Feb 2014 05:31:46 -0800
From:	tip-bot for David Rientjes <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...nel.org,
	tglx@...utronix.de, rientjes@...gle.com
Subject: [tip:x86/apic] x86/apic:
  Always define nox2apic and define it as initdata

Commit-ID:  dc9788f40a769d967de3eb5a7aee8c1a70094d32
Gitweb:     http://git.kernel.org/tip/dc9788f40a769d967de3eb5a7aee8c1a70094d32
Author:     David Rientjes <rientjes@...gle.com>
AuthorDate: Tue, 4 Feb 2014 23:55:06 -0800
Committer:  Ingo Molnar <mingo@...nel.org>
CommitDate: Sun, 9 Feb 2014 15:15:11 +0100

x86/apic: Always define nox2apic and define it as initdata

The "nox2apic" variable can be defined as __initdata since it is
only used for bootstrap.  It can now unconditionally be defined
since it will later be freed.

At the same time, it is also better off as a bool.

Signed-off-by: David Rientjes <rientjes@...gle.com>
Reviewed-by: Thomas Gleixner <tglx@...utronix.de>
Link: http://lkml.kernel.org/r/alpine.DEB.2.02.1402042354380.7839@chino.kir.corp.google.com
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 arch/x86/include/asm/apic.h | 1 -
 arch/x86/kernel/apic/apic.c | 9 ++++++---
 2 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/arch/x86/include/asm/apic.h b/arch/x86/include/asm/apic.h
index b4c561d..19b0eba 100644
--- a/arch/x86/include/asm/apic.h
+++ b/arch/x86/include/asm/apic.h
@@ -217,7 +217,6 @@ static inline void x2apic_force_phys(void)
 {
 }
 
-#define	nox2apic	0
 #define	x2apic_preenabled 0
 #define	x2apic_supported()	0
 #endif
diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
index 7f26c9a..f824d69 100644
--- a/arch/x86/kernel/apic/apic.c
+++ b/arch/x86/kernel/apic/apic.c
@@ -133,6 +133,10 @@ static inline void imcr_apic_to_pic(void)
  * +1=force-enable
  */
 static int force_enable_local_apic __initdata;
+
+/* Control whether x2APIC mode is enabled or not */
+static bool nox2apic __initdata;
+
 /*
  * APIC command line parameters
  */
@@ -162,8 +166,7 @@ int x2apic_mode;
 /* x2apic enabled before OS handover */
 int x2apic_preenabled;
 static int x2apic_disabled;
-static int nox2apic;
-static __init int setup_nox2apic(char *str)
+static int __init setup_nox2apic(char *str)
 {
 	if (x2apic_enabled()) {
 		int apicid = native_apic_msr_read(APIC_ID);
@@ -178,7 +181,7 @@ static __init int setup_nox2apic(char *str)
 	} else
 		setup_clear_cpu_cap(X86_FEATURE_X2APIC);
 
-	nox2apic = 1;
+	nox2apic = true;
 
 	return 0;
 }
--
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