From: Oleg Nesterov <oleg@tv-sign.ru>
To: Johannes Berg <johannes@sipsolutions.net>
Cc: Andrew Morton <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org, Ingo Molnar <mingo@elte.hu>,
Peter Zijlstra <a.p.zijlstra@chello.nl>
Subject: Re: [PATCH 2/2] workqueue: debug work related deadlocks with lockdep
Date: Thu, 5 Jul 2007 19:36:48 +0400 [thread overview]
Message-ID: <20070705153648.GA236@tv-sign.ru> (raw)
In-Reply-To: <20070705110820.622888000@sipsolutions.net>
On 07/05, Johannes Berg wrote:
>
> +#define __WORK_INIT_LOCKDEP_MAP(n, k) \
> + .lockdep_map = STATIC_LOCKDEP_MAP_INIT(n, k),
> +#else
> +#define __WORK_INIT_LOCKDEP_MAP(n, k)
> +#endif
> +
> #define __WORK_INITIALIZER(n, f) { \
> .data = WORK_DATA_INIT(), \
> .entry = { &(n).entry, &(n).entry }, \
> .func = (f), \
> + __WORK_INIT_LOCKDEP_MAP(#n, &(n)) \
[...snip...]
> +#define STATIC_LOCKDEP_MAP_INIT(_name, _key) \
> + { .name = (_name), .key = (void *)(_key), }
Hmm... Can't understand, please help!
So, __WORK_INITIALIZER() uses work_struct itself as a "struct lock_class_key" ?
How so?
Oleg.
next prev parent reply other threads:[~2007-07-05 15:35 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-07-05 11:07 [PATCH 0/2] workqueue lockup debugging Johannes Berg
2007-07-05 11:07 ` [PATCH 1/2] workqueue: debug flushing deadlocks with lockdep Johannes Berg
2007-07-05 14:32 ` Oleg Nesterov
2007-07-05 14:40 ` Ingo Molnar
2007-07-05 14:52 ` Oleg Nesterov
2007-07-06 10:42 ` Johannes Berg
2007-07-05 11:07 ` [PATCH 2/2] workqueue: debug work related " Johannes Berg
2007-07-05 15:36 ` Oleg Nesterov [this message]
2007-07-06 10:43 ` Johannes Berg
2007-07-06 12:53 ` Oleg Nesterov
2007-07-11 11:37 ` Johannes Berg
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