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x86: TLS cleanup

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This consolidates the four different places that implemented the same
encoding magic for the GDT-slot 32-bit TLS support.  The old tls32.c was
renamed and is now only slightly modified to be the shared implementation.

Signed-off-by: Roland McGrath <roland@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Zachary Amsden <zach@vmware.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Roland McGrath 2008-01-30 13:30:46 +01:00 • committed by Ingo Molnar
commit efd1ca52d0
9 changed files with 77 additions and 302 deletions
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6
include/asm-x86/ia32.h
View file

@ -159,12 +159,6 @@ struct ustat32 {
#define IA32_STACK_TOP IA32_PAGE_OFFSET
#ifdef __KERNEL__
struct user_desc;
struct siginfo_t;
int do_get_thread_area(struct thread_struct *t, struct user_desc __user *info);
int do_set_thread_area(struct thread_struct *t, struct user_desc __user *info);
int ia32_child_tls(struct task_struct *p, struct pt_regs *childregs);
struct linux_binprm;
extern int ia32_setup_arg_pages(struct linux_binprm *bprm,
unsigned long stack_top, int exec_stack);

11
include/asm-x86/ptrace.h
View file

@ -137,6 +137,17 @@ enum {
};
#endif /* __KERNEL__ */
#endif /* !__i386__ */
#ifdef __KERNEL__
struct user_desc;
extern int do_get_thread_area(struct task_struct *p, int idx,
struct user_desc __user *info);
extern int do_set_thread_area(struct task_struct *p, int idx,
struct user_desc __user *info, int can_allocate);
#endif /* __KERNEL__ */
#endif /* !__ASSEMBLY__ */
#endif