No PTRACE_READDATA for archs other than SPARC?

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Hi,
   I was trying to understand ptrace code in kernel. It seems there's
no PTRACE_READDATA for architectures other than sparc and sparc64.
There's a function named ptrace_readdata() in kernel/ptrace.c but I
couldn't find a way to invoke it from user space. Is the feature
missing? or Is it intended?
   Another thing I noticed, the prototype for do_ptrace() in
   arch/sparc/kernel/ptrace.c is

   asmlinkage void do_ptrace(struct pt_regs *regs)

   I thought it should be some thing like
   asmlinkage int sys_ptrace(long request, long pid, long addr, long
data)

   It would be great if some one can answer it.

Thank You,
Pradeep Padala

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• Next message: Andrea Arcangeli: "Re: Bug with shared memory."
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• Reply: David S. Miller: "Re: No PTRACE_READDATA for archs other than SPARC?"
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