On mercoledì 20 giugno 2007, Jeff Dike wrote:
> On Wed, Jun 20, 2007 at 04:06:58PM +0200, Blaisorblade wrote:
> > Oh, it's exactly what CONFIG_DEBUG_STACK_USAGE does for i386... (not sure
> > if you were still wondering...).
>
> Where? The only usage in i386 that I see is thread_info.h zeroing stacks
> as they are allocated.
I only looked at docs. But Andrew Morton said:
"Your new code should really be generic, utilising the
stack-page-zeroing which CONFIG_DEBUG_STACK_USAGE enables."
In fact, the other reference is in kernel/sched.c. You may (or may not) join
the two stack walking (I would) and match a bit descriptions.
Personally, I'd put the Kconfig option in lib/Kconfig.debug and have a Kconfig
flag named DEBUG_STACK_USAGE_SUPPORT, much like LOCKDEP_SUPPORT (defined only
by architectures supporting the option), but have no time right now.
Bye
--
Inform me of my mistakes, so I can add them to my list!
Paolo Giarrusso, aka Blaisorblade
http://www.user-mode-linux.org/~blaisorblade
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