Re: [PATCH v2 2.6.38-rc8-tip 0/20] 0: Inode based uprobes

On Wed, 2011-03-16 at 11:32 -0600, Tom Tromey wrote:

Steve> I'm more interested in the perf/trace than gdb, as the way gdb is mostly
Steve> used (at least now) to debug problems in the code with a big hammer
Steve> (single step, look at registers/variables). That is, gdb is usually very
Steve> interactive and its best to "stop the code" from running to examine what
Steve> has happened. gdb is not something you will run on an application that
Steve> is being used by others.

It depends.  People do in fact do this stuff.  In recent years gdb got
its own implementation of "always inserted" breakpoints (basically the
same idea as uprobes) to support some trickier multi-thread debugging
scenarios.

Like I said, if it helps out gdb then great! My concern is that we will
want it to replace ptrace, where it may not be designed to, then people
will start NAKing it.

I hope that gdb uses it, and we don't add another interface that nobody
uses. But I don't see that happening with uprobes.

-- Steve


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