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From: Peter Zijlstra <peterz@infradead.org>
To: Byungchul Park <byungchul.park@lge.com>
Cc: mingo@kernel.org, tglx@linutronix.de, walken@google.com,
	boqun.feng@gmail.com, kirill@shutemov.name,
	linux-kernel@vger.kernel.org, linux-mm@kvack.org,
	iamjoonsoo.kim@lge.com, akpm@linux-foundation.org,
	willy@infradead.org, npiggin@gmail.com, kernel-team@lge.com
Subject: Re: [PATCH v6 05/15] lockdep: Implement crossrelease feature
Date: Wed, 19 Apr 2017 19:20:19 +0200	[thread overview]
Message-ID: <20170419172019.rohvxmtdalas6g57@hirez.programming.kicks-ass.net> (raw)
In-Reply-To: <1489479542-27030-6-git-send-email-byungchul.park@lge.com>

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 ?

> +	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
> 

  parent reply	other threads:[~2017-04-19 17:20 UTC|newest]

Thread overview: 33+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-03-14  8:18 [PATCH v6 00/15] lockdep: Implement crossrelease feature Byungchul Park
2017-03-14  8:18 ` [PATCH v6 01/15] lockdep: Refactor lookup_chain_cache() Byungchul Park
2017-03-14  8:18 ` [PATCH v6 02/15] lockdep: Add a function building a chain between two classes Byungchul Park
2017-03-14  8:18 ` [PATCH v6 03/15] lockdep: Change the meaning of check_prev_add()'s return value Byungchul Park
2017-03-14  8:18 ` [PATCH v6 04/15] lockdep: Make check_prev_add() able to handle external stack_trace Byungchul Park
2017-03-14  8:18 ` [PATCH v6 05/15] lockdep: Implement crossrelease feature Byungchul Park
2017-04-19 14:25   ` Peter Zijlstra
2017-04-24  5:11     ` Byungchul Park
2017-04-24 10:17       ` Peter Zijlstra
2017-04-25  5:40         ` Byungchul Park
2017-05-16 14:18           ` Peter Zijlstra
2017-05-18  6:22             ` Byungchul Park
2017-04-19 15:08   ` Peter Zijlstra
2017-04-24  4:36     ` Byungchul Park
2017-04-19 17:19   ` Peter Zijlstra
2017-04-24  3:04     ` Byungchul Park
2017-04-24  9:30       ` Peter Zijlstra
2017-04-25  6:59         ` Byungchul Park
2017-04-19 17:20   ` Peter Zijlstra [this message]
2017-04-24  3:13     ` Byungchul Park
2017-05-19  8:07   ` Byungchul Park
2017-05-19 10:30     ` Peter Zijlstra
2017-05-19 10:56       ` Byungchul Park
2017-03-14  8:18 ` [PATCH v6 06/15] lockdep: Handle non(or multi)-acquisition of a crosslock Byungchul Park
2017-03-14  8:18 ` [PATCH v6 07/15] lockdep: Avoid adding redundant direct links of crosslocks Byungchul Park
2017-03-14  8:18 ` [PATCH v6 08/15] lockdep: Fix incorrect condition to print bug msgs for MAX_LOCKDEP_CHAIN_HLOCKS Byungchul Park
2017-03-14  8:18 ` [PATCH v6 09/15] lockdep: Make print_circular_bug() aware of crossrelease Byungchul Park
2017-03-14  8:18 ` [PATCH v6 10/15] lockdep: Apply crossrelease to completions Byungchul Park
2017-03-14  8:18 ` [PATCH v6 11/15] pagemap.h: Remove trailing white space Byungchul Park
2017-03-14  8:18 ` [PATCH v6 12/15] lockdep: Apply crossrelease to PG_locked locks Byungchul Park
2017-03-14  8:19 ` [PATCH v6 13/15] lockdep: Apply lock_acquire(release) on __Set(__Clear)PageLocked Byungchul Park
2017-03-14  8:19 ` [PATCH v6 14/15] lockdep: Move data of CONFIG_LOCKDEP_PAGELOCK from page to page_ext Byungchul Park
2017-03-14  8:19 ` [PATCH v6 15/15] lockdep: Crossrelease feature documentation Byungchul Park

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