From: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp>
To: Greg KH <gregkh@suse.de>
Cc: Ingo Molnar <mingo@elte.hu>,
linux-kernel@vger.kernel.org,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Paul Mackerras <paulus@samba.org>,
Frederic Weisbecker <fweisbec@gmail.com>
Subject: Re: [PATCH 5/5] lockdep: Fix the way to initialize class_mutex for information of file and line
Date: Sat, 16 Jan 2010 21:55:36 +0900 [thread overview]
Message-ID: <4B51B748.8070004@dcl.info.waseda.ac.jp> (raw)
In-Reply-To: <20100113231923.GB12325@suse.de>
On 2010年01月14日 08:19, Greg KH wrote:
> On Wed, Jan 13, 2010 at 03:17:55PM -0800, Greg KH wrote:
>> On Wed, Jan 13, 2010 at 11:00:22AM +0100, Ingo Molnar wrote:
>>>
>>> * Hitoshi Mitake<mitake@dcl.info.waseda.ac.jp> wrote:
>>>
>>>> This patch adds __FILE__ and __LINE__ to arguments passed for
>>>> __mutex_init() called in __class_register().
>>>> This affects to lockdep_map of class_mutex of struct class_private,
>>>> and these will be used to make trace lock events more human friendly.
>>>>
>>>> Signed-off-by: Hitoshi Mitake<mitake@dcl.info.waseda.ac.jp>
>>>> Cc: Peter Zijlstra<a.p.zijlstra@chello.nl>
>>>> Cc: Paul Mackerras<paulus@samba.org>
>>>> Cc: Frederic Weisbecker<fweisbec@gmail.com>
>>>> Cc: Greg Kroah-Hartman<gregkh@suse.de>
>>>> ---
>>>> drivers/base/class.c | 3 ++-
>>>> 1 files changed, 2 insertions(+), 1 deletions(-)
>>>>
>>>> diff --git a/drivers/base/class.c b/drivers/base/class.c
>>>> index 161746d..cc0630f 100644
>>>> --- a/drivers/base/class.c
>>>> +++ b/drivers/base/class.c
>>>> @@ -162,7 +162,8 @@ int __class_register(struct class *cls, struct lock_class_key *key)
>>>> klist_init(&cp->class_devices, klist_class_dev_get, klist_class_dev_put);
>>>> INIT_LIST_HEAD(&cp->class_interfaces);
>>>> kset_init(&cp->class_dirs);
>>>> - __mutex_init(&cp->class_mutex, "struct class mutex", key);
>>>> + __mutex_init(&cp->class_mutex, "struct class mutex", key,
>>>> + __FILE__, __LINE__);
>>>> error = kobject_set_name(&cp->class_subsys.kobj, "%s", cls->name);
>>>> if (error) {
>>>> kfree(cp);
>>>
>>> Greg, any objection to this type of embellishment of lock data that comes from
>>> the driver core?
>>
>> No, I'll queue it up in my tree.
>
> Er, oops, sorry, that would go through your tree, not mine :)
>
> Feel free to add:
> Acked-by: Greg Kroah-Hartman<gregkh@suse.de>
>
> In looking at it, this might solve the lockdep issue with the device
> tree as well, I'll have to play with it once this makes it into Linus's
> tree.
>
> thanks,
>
> greg k-h
>
Greg,
I'll add your ack in future version of this patch, thanks!
(perf lock has some build errors)
Hitoshi
next prev parent reply other threads:[~2010-01-16 12:55 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-12-16 3:28 [PATCH 1/2] perf: Add util/include/linuxhash.h to include hash.h of kernel Hitoshi Mitake
2009-12-16 3:28 ` [PATCH 2/2] perf lock: Fix output of tracing lock events Hitoshi Mitake
2009-12-16 8:19 ` [tip:perf/lock] " tip-bot for Hitoshi Mitake
2009-12-17 8:50 ` [PATCH 2/2] " Ingo Molnar
2009-12-17 9:24 ` Peter Zijlstra
2009-12-17 10:09 ` Ingo Molnar
2009-12-17 10:26 ` Peter Zijlstra
2009-12-17 10:51 ` Ingo Molnar
2009-12-26 13:43 ` Hitoshi Mitake
2009-12-28 10:01 ` Peter Zijlstra
2009-12-31 13:24 ` Hitoshi Mitake
2010-01-07 10:38 ` Hitoshi Mitake
2010-01-07 10:39 ` [PATCH 0/5] lockdep: Add information of file and line to lockdep_map Hitoshi Mitake
2010-01-13 9:52 ` Peter Zijlstra
2010-01-13 10:09 ` Ingo Molnar
2010-01-16 13:01 ` Hitoshi Mitake
2010-01-18 7:20 ` Peter Zijlstra
2010-01-26 5:56 ` [PATCH] Add type of locks to lock trace events Hitoshi Mitake
2010-01-28 10:21 ` Peter Zijlstra
2010-01-29 17:29 ` Frederic Weisbecker
2010-01-29 17:41 ` Peter Zijlstra
2010-01-29 22:12 ` Frederic Weisbecker
2010-02-24 9:02 ` [PATCH] Separate lock events with types Hitoshi Mitake
2010-03-26 23:33 ` Frederic Weisbecker
2010-04-05 10:37 ` Hitoshi Mitake
2010-04-06 8:26 ` Peter Zijlstra
2010-04-06 9:44 ` Frederic Weisbecker
2010-01-07 10:39 ` [PATCH 1/5] lockdep: Add file and line to initialize sequence of spin and rw lock Hitoshi Mitake
2010-01-07 10:39 ` [PATCH 2/5] lockdep: Add file and line to initialize sequence of rwsem Hitoshi Mitake
2010-01-07 10:39 ` [PATCH 3/5] " Hitoshi Mitake
2010-01-07 10:39 ` [PATCH 4/5] lockdep: Add file and line to initialize sequence of mutex Hitoshi Mitake
2010-01-07 10:39 ` [PATCH 5/5] lockdep: Fix the way to initialize class_mutex for information of file and line Hitoshi Mitake
2010-01-13 10:00 ` Ingo Molnar
2010-01-13 23:17 ` Greg KH
2010-01-13 23:19 ` Greg KH
2010-01-16 12:55 ` Hitoshi Mitake [this message]
2009-12-16 8:18 ` [tip:perf/lock] perf: Add util/include/linuxhash.h to include hash.h of kernel tip-bot for Hitoshi Mitake
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