Messages in this thread | | | Date | Wed, 31 May 2006 23:53:15 +0200 | From | Ingo Molnar <> | Subject | Re: 2.6.17-rc5-mm1 |
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* Martin J. Bligh <mbligh@mbligh.org> wrote:
> >>Grrr. Humpf. I can't see the option being turned on for lockdep ... > >>what was the config option, and is it enabled by default? > > In the -mm1 patch: > > config DEBUG_MUTEXES > - bool "Mutex debugging, deadlock detection" > - default n > + bool "Mutex debugging, basic checks" > + default y > > Please don't do thatas a default.
but ... i fixed the performance problem that caused the previous DEBUG_MUTEXES scalability problems. (there's no global mutex list anymore) We also default to e.g. DEBUG_SLAB which is alot more costly.
> It fucks up all the performance checking ;-(
i'm wondering, why doesnt your config have DEBUG_MUTEXES disabled? Then 'make oldconfig' would pick it up automatically.
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