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x86/vdso: Only define prctl_map_vdso() if CONFIG_CHECKPOINT_RESTORE 

... otherwise the compiler complains:

  arch/x86/kernel/process_64.c:528:13: warning: ‘prctl_map_vdso’ defined but not used [-Wunused-function]

Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Dmitry Safonov <dsafonov@virtuozzo.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: gorcunov@openvz.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-mm@kvack.org
Cc: oleg@redhat.com
Cc: xemul@virtuozzo.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Ingo Molnar 2016-09-15 08:42:51 +02:00
parent 6846351052
commit 91b7bd39e6
1 changed files with 6 additions and 4 deletions
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10
arch/x86/kernel/process_64.c
View File

@ -525,6 +525,7 @@ void set_personality_ia32(bool x32)
}
EXPORT_SYMBOL_GPL(set_personality_ia32);
#ifdef CONFIG_CHECKPOINT_RESTORE
static long prctl_map_vdso(const struct vdso_image *image, unsigned long addr)
{
int ret;
@ -535,6 +536,7 @@ static long prctl_map_vdso(const struct vdso_image *image, unsigned long addr)
return (long)image->size;
}
#endif
long do_arch_prctl(struct task_struct *task, int code, unsigned long addr)
{
@ -590,14 +592,14 @@ long do_arch_prctl(struct task_struct *task, int code, unsigned long addr)
}
#ifdef CONFIG_CHECKPOINT_RESTORE
#ifdef CONFIG_X86_X32
# ifdef CONFIG_X86_X32
case ARCH_MAP_VDSO_X32:
return prctl_map_vdso(&vdso_image_x32, addr);
#endif
#if defined CONFIG_X86_32 || defined CONFIG_IA32_EMULATION
# endif
# if defined CONFIG_X86_32 || defined CONFIG_IA32_EMULATION
case ARCH_MAP_VDSO_32:
return prctl_map_vdso(&vdso_image_32, addr);
#endif
# endif
case ARCH_MAP_VDSO_64:
return prctl_map_vdso(&vdso_image_64, addr);
#endif