Re: [Ksummit-discuss] [MAINTAINERS SUMMIT] & [TECH TOPIC] Improve regression tracking
From: Steven Rostedt <hidden>
Date: 2017-07-05 15:20:47
On Wed, 05 Jul 2017 08:09:49 -0700 James Bottomley [off-list ref] wrote:
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you're protecting was accessed outside the lock, which is the usual source of concurrency problems. In other words lockdep is useful but it's not a panacea.Still not an excuse to not have lockdep enabled during tests.OK, what makes you think lockdep isn't enabled? Since Kconfig is so complex, I usually use a distro config ... they have it enabled (or at least openSUSE does), so it's enabled for everything I do.
openSuSE has it enabled? I hope not for its production config, as lockdep has a huge performance penalty. I'm thinking you don't have it enabled. What config are you looking at? The actual config that does the testing of locks is CONFIG_PROVE_LOCKING, which selects LOCKDEP to be compiled in. -- Steve