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x86, asmlinkage: Make 32bit/64bit __switch_to visible 

This function is called from inline assembler, so has to be visible.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Link: http://lkml.kernel.org/r/1375740170-7446-6-git-send-email-andi@firstfloor.org
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
This commit is contained in:
Andi Kleen 2013-08-05 15:02:39 -07:00 committed by H. Peter Anvin
parent a1ed4ddfb7
commit 35ea7903b8
3 changed files with 4 additions and 4 deletions
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4
arch/x86/include/asm/switch_to.h
View File

@ -2,8 +2,8 @@
#define _ASM_X86_SWITCH_TO_H
struct task_struct; /* one of the stranger aspects of C forward declarations */
struct task_struct *__switch_to(struct task_struct *prev,
struct task_struct *next);
__visible struct task_struct *__switch_to(struct task_struct *prev,
struct task_struct *next);
struct tss_struct;
void __switch_to_xtra(struct task_struct *prev_p, struct task_struct *next_p,
struct tss_struct *tss);

2
arch/x86/kernel/process_32.c
View File

@ -247,7 +247,7 @@ EXPORT_SYMBOL_GPL(start_thread);
* the task-switch, and shows up in ret_from_fork in entry.S,
* for example.
*/
__notrace_funcgraph struct task_struct *
__visible __notrace_funcgraph struct task_struct *
__switch_to(struct task_struct *prev_p, struct task_struct *next_p)
{
struct thread_struct *prev = &prev_p->thread,

2
arch/x86/kernel/process_64.c
View File

@ -274,7 +274,7 @@ void start_thread_ia32(struct pt_regs *regs, u32 new_ip, u32 new_sp)
* Kprobes not supported here. Set the probe on schedule instead.
* Function graph tracer not supported too.
*/
__notrace_funcgraph struct task_struct *
__visible __notrace_funcgraph struct task_struct *
__switch_to(struct task_struct *prev_p, struct task_struct *next_p)
{
struct thread_struct *prev = &prev_p->thread;