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    SubjectRe: [PATCH 1/14] move user_enable_single_step & co prototypes to linux/ptrace.h
    On Tue, Feb 2, 2010 at 13:57, Christoph Hellwig wrote:
    > While in theory user_enable_single_step/user_disable_single_step/
    > user_enable_blockstep could also be provided as an inline or macro there's no
    > good reason to do so, and having the prototype in one places keeps code size
    > and confusion down.

    the only annoying thing here is that we currently have to enable both
    user_disable_single_step() and ptrace_disable() that do exactly the
    same thing. i avoided this somewhat on Blackfin by cheating:
    #define user_disable_single_step(child) ptrace_disable(child)

    so now there's no code bloat. perhaps this could be moved into common
    linux/ptrace.h too ?

    > --- linux-2.6/include/linux/ptrace.h
    > +++ linux-2.6/include/linux/ptrace.h
    > @@ -238,6 +238,9 @@
    >  static inline void user_disable_single_step(struct task_struct *task)
    >  {
    >  }
    > +#else
    > +extern void user_enable_single_step(struct task_struct *);
    > +extern void user_disable_single_step(struct task_struct *);
    >  #endif /* arch_has_single_step */

    +#define ptrace_disable(child) user_disable_single_step(child)
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      Last update: 2010-02-03 09:45    [W:0.021 / U:34.364 seconds]
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