Messages in this thread | | | Date | Wed, 4 May 2011 01:54:36 +0200 | From | Frederic Weisbecker <> | Subject | Re: [PATCH 3/6] x86: Allow the user not to build hw_breakpoints |
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On Tue, May 03, 2011 at 04:40:14PM -0700, H. Peter Anvin wrote: > On 05/03/2011 04:12 PM, Frederic Weisbecker wrote: > >> > >> It really is very bad... without breakpoints, you lose almost all > >> debugging support. > > > > Right, so it should be fine for embedded environment to disable breakpoints. > > It depends on CONFIG_EXPERT now. > > Uh... even embedded environments need to be able to debug.
For development yeah, but is it needed for production evironments?
May be sometimes. But even though, the main functionalities of ptrace are still available since instruction breakpoints are implemented through int3 and not debugreg in ptrace. Only data breakpoints would be unusable, but I believe they are a minor use compared to instruction breakpoints. I rarely make use of them for debugging personally.
That's really deemed for specific cases where people know what they are doing.
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