Re: [PATCH v6 05/15] lockdep: Implement crossrelease feature

From	Byungchul Park <byungchul.park@lge.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH v6 05/15] lockdep: Implement crossrelease feature
Date	2017-04-24 05:20 +0200
Message-ID	<tzCHD-1ce-9@gated-at.bofh.it> (permalink)
References	<tkQ09-5P9-3@gated-at.bofh.it> <tkQ09-5P9-17@gated-at.bofh.it> <ty1At-6ev-3@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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On Wed, Apr 19, 2017 at 07:20:19PM +0200, Peter Zijlstra wrote:
> On Tue, Mar 14, 2017 at 05:18:52PM +0900, Byungchul Park wrote:
> > +config LOCKDEP_CROSSRELEASE
> > +	bool "Lock debugging: make lockdep work for crosslocks"
> > +	select PROVE_LOCKING
> 
> 	depends PROVE_LOCKING
> 
> instead ?

OK. I will change it.

> 
> > +	default n
> > +	help
> > +	 This makes lockdep work for crosslock which is a lock allowed to
> > +	 be released in a different context from the acquisition context.
> > +	 Normally a lock must be released in the context acquiring the lock.
> > +	 However, relexing this constraint helps synchronization primitives
> > +	 such as page locks or completions can use the lock correctness
> > +	 detector, lockdep.
> > +
> >  config PROVE_LOCKING
> >  	bool "Lock debugging: prove locking correctness"
> >  	depends on DEBUG_KERNEL && TRACE_IRQFLAGS_SUPPORT && STACKTRACE_SUPPORT && LOCKDEP_SUPPORT
> > -- 
> > 1.9.1
> >

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Re: [PATCH v6 05/15] lockdep: Implement crossrelease feature Peter Zijlstra <peterz@infradead.org> - 2017-04-19 19:30 +0200
  Re: [PATCH v6 05/15] lockdep: Implement crossrelease feature Byungchul Park <byungchul.park@lge.com> - 2017-04-24 05:20 +0200

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