linux-kernel - [PATCH v6 1/4] x86/xen: Mark xen_hvm_need_lapic() and xen_x2apic_para_available() as _

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Date:   Sun,  7 Jul 2019 17:15:05 +0800
From:   Zhenzhong Duan <zhenzhong.duan@...cle.com>
To:     linux-kernel@...r.kernel.org
Cc:     xen-devel@...ts.xenproject.org, boris.ostrovsky@...cle.com,
        jgross@...e.com, sstabellini@...nel.org, tglx@...utronix.de,
        mingo@...hat.com, bp@...en8.de,
        Zhenzhong Duan <zhenzhong.duan@...cle.com>
Subject: [PATCH v6 1/4] x86/xen: Mark xen_hvm_need_lapic() and xen_x2apic_para_available() as __init

.. as they are only called at early bootup stage. In fact, other
functions in x86_hyper_xen_hvm.init.* are all marked as __init.

Unexport xen_hvm_need_lapic as it's never used outside.

Signed-off-by: Zhenzhong Duan <zhenzhong.duan@...cle.com>
Reviewed-by: Juergen Gross <jgross@...e.com>
Cc: Boris Ostrovsky <boris.ostrovsky@...cle.com>
Cc: Stefano Stabellini <sstabellini@...nel.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Ingo Molnar <mingo@...hat.com>
Cc: Borislav Petkov <bp@...en8.de>
---
 arch/x86/include/asm/xen/hypervisor.h | 6 +++---
 arch/x86/xen/enlighten_hvm.c          | 3 +--
 2 files changed, 4 insertions(+), 5 deletions(-)

diff --git a/arch/x86/include/asm/xen/hypervisor.h b/arch/x86/include/asm/xen/hypervisor.h
index 39171b3..42e1245 100644
--- a/arch/x86/include/asm/xen/hypervisor.h
+++ b/arch/x86/include/asm/xen/hypervisor.h
@@ -44,14 +44,14 @@ static inline uint32_t xen_cpuid_base(void)
 }
 
 #ifdef CONFIG_XEN
-extern bool xen_hvm_need_lapic(void);
+extern bool __init xen_hvm_need_lapic(void);
 
-static inline bool xen_x2apic_para_available(void)
+static inline bool __init xen_x2apic_para_available(void)
 {
 	return xen_hvm_need_lapic();
 }
 #else
-static inline bool xen_x2apic_para_available(void)
+static inline bool __init xen_x2apic_para_available(void)
 {
 	return (xen_cpuid_base() != 0);
 }
diff --git a/arch/x86/xen/enlighten_hvm.c b/arch/x86/xen/enlighten_hvm.c
index 0e75642..ac4943c 100644
--- a/arch/x86/xen/enlighten_hvm.c
+++ b/arch/x86/xen/enlighten_hvm.c
@@ -218,7 +218,7 @@ static __init int xen_parse_nopv(char *arg)
 }
 early_param("xen_nopv", xen_parse_nopv);
 
-bool xen_hvm_need_lapic(void)
+bool __init xen_hvm_need_lapic(void)
 {
 	if (xen_nopv)
 		return false;
@@ -230,7 +230,6 @@ bool xen_hvm_need_lapic(void)
 		return false;
 	return true;
 }
-EXPORT_SYMBOL_GPL(xen_hvm_need_lapic);
 
 static uint32_t __init xen_platform_hvm(void)
 {
-- 
1.8.3.1