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uml: use ptrace directly in libc code

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Some register accessor cleanups -
	userspace() was calling restore_registers and save_registers for no
reason, since userspace() is on the libc side of the house, and these
add no value over calling ptrace directly
	init_thread_registers and get_safe_registers were the same thing,
so init_thread_registers is gone

Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jeff Dike
2008-02-04 22:30:57 -08:00
committed by Linus Torvalds
parent ee3d9bd4de
commit d25f2e1235
4 changed files with 13 additions and 14 deletions
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2
arch/um/kernel/process.c
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@@ -199,7 +199,7 @@ int copy_thread(int nr, unsigned long clone_flags, unsigned long sp,
arch_copy_thread(&current->thread.arch, &p->thread.arch);
}
else {
init_thread_registers(&p->thread.regs.regs);
get_safe_registers(p->thread.regs.regs.gp);
p->thread.request.u.thread = current->thread.request.u.thread;
handler = new_thread_handler;
}