Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755298Ab3HEWDz (ORCPT ); Mon, 5 Aug 2013 18:03:55 -0400 Received: from mga02.intel.com ([134.134.136.20]:64992 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755169Ab3HEWDD (ORCPT ); Mon, 5 Aug 2013 18:03:03 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.89,821,1367996400"; d="scan'208";a="382341518" From: Andi Kleen To: x86@kernel.org Cc: linux-kernel@vger.kernel.org, Andi Kleen Subject: [PATCH 09/16] x86, asmlinkage: Make several variables used from assembler/linker script visible Date: Mon, 5 Aug 2013 15:02:43 -0700 Message-Id: <1375740170-7446-10-git-send-email-andi@firstfloor.org> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1375740170-7446-1-git-send-email-andi@firstfloor.org> References: <1375740170-7446-1-git-send-email-andi@firstfloor.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 6163 Lines: 171 From: Andi Kleen plus one function load_gs_index Signed-off-by: Andi Kleen --- arch/x86/include/asm/pgtable.h | 3 ++- arch/x86/include/asm/processor.h | 2 +- arch/x86/include/asm/special_insns.h | 2 +- arch/x86/kernel/cpu/amd.c | 4 ++-- arch/x86/kernel/cpu/common.c | 4 ++-- arch/x86/kernel/process.c | 2 +- arch/x86/kernel/process_64.c | 2 +- arch/x86/kernel/setup.c | 4 ++-- arch/x86/kernel/signal.c | 2 +- arch/x86/lib/usercopy_64.c | 2 +- 10 files changed, 14 insertions(+), 13 deletions(-) diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h index 7dc305a..4e47659 100644 --- a/arch/x86/include/asm/pgtable.h +++ b/arch/x86/include/asm/pgtable.h @@ -22,7 +22,8 @@ * ZERO_PAGE is a global shared page that is always zero: used * for zero-mapped memory areas etc.. */ -extern unsigned long empty_zero_page[PAGE_SIZE / sizeof(unsigned long)]; +extern unsigned long empty_zero_page[PAGE_SIZE / sizeof(unsigned long)] + __visible; #define ZERO_PAGE(vaddr) (virt_to_page(empty_zero_page)) extern spinlock_t pgd_lock; diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h index 24cf5ae..573c1ad 100644 --- a/arch/x86/include/asm/processor.h +++ b/arch/x86/include/asm/processor.h @@ -412,7 +412,7 @@ union irq_stack_union { }; }; -DECLARE_PER_CPU_FIRST(union irq_stack_union, irq_stack_union); +DECLARE_PER_CPU_FIRST(union irq_stack_union, irq_stack_union) __visible; DECLARE_INIT_PER_CPU(irq_stack_union); DECLARE_PER_CPU(char *, irq_stack_ptr); diff --git a/arch/x86/include/asm/special_insns.h b/arch/x86/include/asm/special_insns.h index 2f4d924..645cad2 100644 --- a/arch/x86/include/asm/special_insns.h +++ b/arch/x86/include/asm/special_insns.h @@ -101,7 +101,7 @@ static inline void native_wbinvd(void) asm volatile("wbinvd": : :"memory"); } -extern void native_load_gs_index(unsigned); +extern asmlinkage void native_load_gs_index(unsigned); #ifdef CONFIG_PARAVIRT #include diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c index f654ece..466e3d1 100644 --- a/arch/x86/kernel/cpu/amd.c +++ b/arch/x86/kernel/cpu/amd.c @@ -66,8 +66,8 @@ static inline int wrmsrl_amd_safe(unsigned msr, unsigned long long val) * performance at the same time.. */ -extern void vide(void); -__asm__(".align 4\nvide: ret"); +extern __visible void vide(void); +__asm__(".globl vide\n\t.align 4\nvide: ret"); static void init_amd_k5(struct cpuinfo_x86 *c) { diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c index 25eb274..2793d1f 100644 --- a/arch/x86/kernel/cpu/common.c +++ b/arch/x86/kernel/cpu/common.c @@ -1076,7 +1076,7 @@ struct desc_ptr debug_idt_descr = { NR_VECTORS * 16 - 1, (unsigned long) debug_idt_table }; DEFINE_PER_CPU_FIRST(union irq_stack_union, - irq_stack_union) __aligned(PAGE_SIZE); + irq_stack_union) __aligned(PAGE_SIZE) __visible; /* * The following four percpu variables are hot. Align current_task to @@ -1093,7 +1093,7 @@ EXPORT_PER_CPU_SYMBOL(kernel_stack); DEFINE_PER_CPU(char *, irq_stack_ptr) = init_per_cpu_var(irq_stack_union.irq_stack) + IRQ_STACK_SIZE - 64; -DEFINE_PER_CPU(unsigned int, irq_count) = -1; +DEFINE_PER_CPU(unsigned int, irq_count) __visible = -1; DEFINE_PER_CPU(struct task_struct *, fpu_owner_task); diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c index 83369e5..c83516b 100644 --- a/arch/x86/kernel/process.c +++ b/arch/x86/kernel/process.c @@ -36,7 +36,7 @@ * section. Since TSS's are completely CPU-local, we want them * on exact cacheline boundaries, to eliminate cacheline ping-pong. */ -DEFINE_PER_CPU_SHARED_ALIGNED(struct tss_struct, init_tss) = INIT_TSS; +__visible DEFINE_PER_CPU_SHARED_ALIGNED(struct tss_struct, init_tss) = INIT_TSS; #ifdef CONFIG_X86_64 static DEFINE_PER_CPU(unsigned char, is_idle); diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c index 6e8c1d0..bb1dc51 100644 --- a/arch/x86/kernel/process_64.c +++ b/arch/x86/kernel/process_64.c @@ -52,7 +52,7 @@ asmlinkage extern void ret_from_fork(void); -DEFINE_PER_CPU(unsigned long, old_rsp); +asmlinkage DEFINE_PER_CPU(unsigned long, old_rsp); /* Prints also some state that isn't saved in the pt_regs */ void __show_regs(struct pt_regs *regs, int all) diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index f8ec578..dfa55af 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -206,9 +206,9 @@ EXPORT_SYMBOL(boot_cpu_data); #if !defined(CONFIG_X86_PAE) || defined(CONFIG_X86_64) -unsigned long mmu_cr4_features; +__visible unsigned long mmu_cr4_features; #else -unsigned long mmu_cr4_features = X86_CR4_PAE; +__visible unsigned long mmu_cr4_features = X86_CR4_PAE; #endif /* Boot loader ID and version as integers, for the benefit of proc_dointvec */ diff --git a/arch/x86/kernel/signal.c b/arch/x86/kernel/signal.c index 1dba45d..6a9acc6 100644 --- a/arch/x86/kernel/signal.c +++ b/arch/x86/kernel/signal.c @@ -728,7 +728,7 @@ static void do_signal(struct pt_regs *regs) * notification of userspace execution resumption * - triggered by the TIF_WORK_MASK flags */ -void +__visible void do_notify_resume(struct pt_regs *regs, void *unused, __u32 thread_info_flags) { user_exit(); diff --git a/arch/x86/lib/usercopy_64.c b/arch/x86/lib/usercopy_64.c index 906fea3..c905e89 100644 --- a/arch/x86/lib/usercopy_64.c +++ b/arch/x86/lib/usercopy_64.c @@ -68,7 +68,7 @@ EXPORT_SYMBOL(copy_in_user); * Since protection fault in copy_from/to_user is not a normal situation, * it is not necessary to optimize tail handling. */ -unsigned long +__visible unsigned long copy_user_handle_tail(char *to, char *from, unsigned len, unsigned zerorest) { char c; -- 1.8.3.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/