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Re: [PATCH] Add control variable for debug output to linux threads

Mark Kettenis wrote:
>    Date: Fri, 27 Apr 2001 14:26:15 -0700
>    From: Kevin Buettner <>
>    Cc: Mark Kettenis <>,
>    Content-Type: text/plain; charset=us-ascii
>    On Apr 26,  4:13pm, Michael Snyder wrote:
>    > This patch replaces your DEBUG macro with a runtime variable that is
>    > settable by a user command.  At some recent check-in, you left the
>    > DEBUG macro turned on, and users have been asking about the extra
>    > messages.
>    >
>    > 2001-04-26  Michael Snyder  <>
>    >
>    >    * thread-db.c (_initialize_thread_db): Add set/show command
>    >    "debug-linux-threads" for debugging output.
>    >    * lin-lwp.c (various): Use global "debug_linux_threads to
>    >    turn on extra debugging output.
>    Michael,
>    I have problems with your patch since it does a bit more than
>    advertised.
> Apart from that, I'm having some trouble with the fact that the
> set/show command is added to thread-db.c (the user threads library
> layer, that in principle isn't Linux-specific) while the debug code
> that it enables is code for the Linux-specific kernel threads (LWP)
> support code that lives in lin-lwp.c.

Well, I figured we would from time to time need some similar 
printf/debug code in thread-db too.  As for it not being 
linux-specific, that was the original hope, but I don't 
really imagine it happening anytime soon.

> Michael, may I suggest reverting this patch and discussing it next
> week?  I've got a train to catch now, so I'm a bit in a hurry.

I'll back this change out and put in one that is confined to lin-lwp.c.

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