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um: Fix the -Wmissing-prototypes warning for get_thread_reg

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[ Upstream commit 3144013e48f4f6e5127223c4ebc488016815dedb ]

The get_thread_reg function is defined in the user code, and is
called by the kernel code. It should be declared in a shared header.

Fixes: dbba7f704a ("um: stop polluting the namespace with registers.h contents")
Signed-off-by: Tiwei Bie <tiwei.btw@antgroup.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Tiwei Bie
2024-04-23 20:58:54 +08:00
committed by Greg Kroah-Hartman
parent b6eda6dee3
commit 68bc383a75
2 changed files with 7 additions and 1 deletions
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1
arch/um/include/asm/processor-generic.h
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@@ -95,7 +95,6 @@ extern struct cpuinfo_um boot_cpu_data;
#define current_cpu_data boot_cpu_data #define current_cpu_data boot_cpu_data
#define cache_line_size() (boot_cpu_data.cache_alignment) #define cache_line_size() (boot_cpu_data.cache_alignment)
extern unsigned long get_thread_reg(int reg, jmp_buf *buf);
#define KSTK_REG(tsk, reg) get_thread_reg(reg, &tsk->thread.switch_buf) #define KSTK_REG(tsk, reg) get_thread_reg(reg, &tsk->thread.switch_buf)
extern unsigned long __get_wchan(struct task_struct *p); extern unsigned long __get_wchan(struct task_struct *p);

7
arch/x86/um/shared/sysdep/archsetjmp.h
View File

@@ -1,6 +1,13 @@
/* SPDX-License-Identifier: GPL-2.0 */ /* SPDX-License-Identifier: GPL-2.0 */
#ifndef __X86_UM_SYSDEP_ARCHSETJMP_H
#define __X86_UM_SYSDEP_ARCHSETJMP_H
#ifdef __i386__ #ifdef __i386__
#include "archsetjmp_32.h" #include "archsetjmp_32.h"
#else #else
#include "archsetjmp_64.h" #include "archsetjmp_64.h"
#endif #endif
unsigned long get_thread_reg(int reg, jmp_buf *buf);
#endif /* __X86_UM_SYSDEP_ARCHSETJMP_H */