From: Tejun Heo <tj@kernel.org>
To: "Arve Hjønnevåg" <arve@android.com>
Cc: Len Brown <len.brown@intel.com>, Oleg Nesterov <oleg@redhat.com>,
linux-kernel@vger.kernel.org,
linux-pm@lists.linux-foundation.org
Subject: Re: [PATCH 2/2] workqueues: export keventd_wq
Date: Fri, 30 Apr 2010 07:52:12 +0200 [thread overview]
Message-ID: <4BDA700C.3050509@kernel.org> (raw)
In-Reply-To: <t2gd6200be21004292239r582b8a43l2409491b8d32ef1b@mail.gmail.com>
On 04/30/2010 07:39 AM, Arve Hjønnevåg wrote:
> On Thu, Apr 29, 2010 at 10:16 PM, Tejun Heo <tj@kernel.org> wrote:
>> Hello,
>>
>> On 04/29/2010 09:45 PM, Oleg Nesterov wrote:
>>> -static struct workqueue_struct *keventd_wq __read_mostly;
>>> +struct workqueue_struct *keventd_wq __read_mostly;
>>> +EXPORT_SYMBOL(keventd_wq);
>>
>> Umm... does it have to be EXPORTed? Suspend block API can't be built
>> as a module, right?
>
> The suspend block api cannot be built as a module, but if
> schedule_suspend_blocking_work will just call
> queue_suspend_blocking_work(keventd_wq, work) it may as well be an
> inline function which would require the export.
I think it would be better to keep the thing inside the kernel, at
least for now. It's not like we need to save cpu cycles spent on a
function call here (in block suspend API and in workqueue general).
Thanks.
--
tejun
WARNING: multiple messages have this Message-ID (diff)
From: Tejun Heo <tj@kernel.org>
To: "Arve Hjønnevåg" <arve@android.com>
Cc: Oleg Nesterov <oleg@redhat.com>,
"Rafael J. Wysocki" <rjw@sisk.pl>,
linux-pm@lists.linux-foundation.org,
linux-kernel@vger.kernel.org,
Alan Stern <stern@rowland.harvard.edu>,
Pavel Machek <pavel@ucw.cz>, Len Brown <len.brown@intel.com>
Subject: Re: [PATCH 2/2] workqueues: export keventd_wq
Date: Fri, 30 Apr 2010 07:52:12 +0200 [thread overview]
Message-ID: <4BDA700C.3050509@kernel.org> (raw)
In-Reply-To: <t2gd6200be21004292239r582b8a43l2409491b8d32ef1b@mail.gmail.com>
On 04/30/2010 07:39 AM, Arve Hjønnevåg wrote:
> On Thu, Apr 29, 2010 at 10:16 PM, Tejun Heo <tj@kernel.org> wrote:
>> Hello,
>>
>> On 04/29/2010 09:45 PM, Oleg Nesterov wrote:
>>> -static struct workqueue_struct *keventd_wq __read_mostly;
>>> +struct workqueue_struct *keventd_wq __read_mostly;
>>> +EXPORT_SYMBOL(keventd_wq);
>>
>> Umm... does it have to be EXPORTed? Suspend block API can't be built
>> as a module, right?
>
> The suspend block api cannot be built as a module, but if
> schedule_suspend_blocking_work will just call
> queue_suspend_blocking_work(keventd_wq, work) it may as well be an
> inline function which would require the export.
I think it would be better to keep the thing inside the kernel, at
least for now. It's not like we need to save cpu cycles spent on a
function call here (in block suspend API and in workqueue general).
Thanks.
--
tejun
next prev parent reply other threads:[~2010-04-30 5:52 UTC|newest]
Thread overview: 117+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-28 4:31 [PATCH 0/9] Suspend block api (version 5) Arve Hjønnevåg
2010-04-28 4:31 ` [PATCH 1/8] PM: Add suspend block api Arve Hjønnevåg
2010-04-28 4:31 ` Arve Hjønnevåg
2010-04-28 4:31 ` [PATCH 2/8] PM: suspend_block: Add driver to access suspend blockers from user-space Arve Hjønnevåg
2010-04-28 4:31 ` Arve Hjønnevåg
2010-04-28 4:31 ` [PATCH 3/8] PM: suspend_block: Abort task freezing if a suspend_blocker is active Arve Hjønnevåg
2010-04-28 4:31 ` Arve Hjønnevåg
2010-04-28 4:31 ` [PATCH 4/8] PM: suspend_block: Add debugfs file Arve Hjønnevåg
2010-04-28 4:31 ` Arve Hjønnevåg
2010-04-28 4:31 ` [PATCH 5/8] PM: suspend_block: Add suspend_blocker stats Arve Hjønnevåg
2010-04-28 4:31 ` Arve Hjønnevåg
2010-04-28 4:31 ` [PATCH 6/8] PM: Add suspend blocking work Arve Hjønnevåg
2010-04-28 4:31 ` Arve Hjønnevåg
2010-04-28 4:31 ` [PATCH 7/8] Input: Block suspend while event queue is not empty Arve Hjønnevåg
2010-04-28 4:31 ` Arve Hjønnevåg
2010-04-28 4:31 ` [PATCH 8/8] power_supply: Block suspend while power supply change notifications are pending Arve Hjønnevåg
2010-04-28 4:31 ` Arve Hjønnevåg
2010-04-28 6:06 ` [PATCH 6/8] PM: Add suspend blocking work Pavel Machek
2010-04-28 6:06 ` Pavel Machek
2010-04-28 6:44 ` Tejun Heo
2010-04-28 6:44 ` Tejun Heo
2010-04-28 7:02 ` Arve Hjønnevåg
2010-04-28 7:02 ` Arve Hjønnevåg
2010-04-28 7:18 ` Tejun Heo
2010-04-28 7:18 ` Tejun Heo
2010-04-28 19:40 ` Oleg Nesterov
2010-04-28 19:40 ` Oleg Nesterov
2010-04-28 20:22 ` Tejun Heo
2010-04-28 20:22 ` Tejun Heo
2010-04-28 21:08 ` Rafael J. Wysocki
2010-04-28 21:08 ` Rafael J. Wysocki
2010-04-29 18:58 ` Oleg Nesterov
2010-04-29 18:58 ` Oleg Nesterov
2010-04-29 19:44 ` [PATCH 0/2] workqueue fixlets (Was: PM: Add suspend blocking work.) Oleg Nesterov
2010-04-29 19:44 ` Oleg Nesterov
2010-04-29 19:45 ` [PATCH 1/2] workqueues: flush_delayed_work: keep the original workqueue for re-queueing Oleg Nesterov
2010-04-29 19:45 ` Oleg Nesterov
2010-04-30 5:15 ` Tejun Heo
2010-04-30 5:15 ` Tejun Heo
2010-04-29 19:45 ` [PATCH 2/2] workqueues: export keventd_wq Oleg Nesterov
2010-04-29 19:45 ` Oleg Nesterov
2010-04-30 5:16 ` Tejun Heo
2010-04-30 5:16 ` Tejun Heo
2010-04-30 5:39 ` Arve Hjønnevåg
2010-04-30 5:39 ` Arve Hjønnevåg
2010-04-30 5:52 ` Tejun Heo [this message]
2010-04-30 5:52 ` Tejun Heo
2010-04-30 18:05 ` Oleg Nesterov
2010-04-30 18:05 ` Oleg Nesterov
2010-04-30 18:11 ` Tejun Heo
2010-04-30 18:11 ` Tejun Heo
2010-04-29 21:08 ` [PATCH 6/8] PM: Add suspend blocking work Rafael J. Wysocki
2010-04-29 21:08 ` Rafael J. Wysocki
2010-04-28 21:09 ` Rafael J. Wysocki
2010-04-28 21:09 ` Rafael J. Wysocki
2010-04-28 22:09 ` Arve Hjønnevåg
2010-04-28 22:19 ` Rafael J. Wysocki
2010-04-29 3:47 ` Arve Hjønnevåg
2010-04-29 3:47 ` Arve Hjønnevåg
2010-04-29 21:09 ` Rafael J. Wysocki
2010-04-29 21:09 ` Rafael J. Wysocki
2010-04-28 22:19 ` Rafael J. Wysocki
2010-04-28 22:09 ` Arve Hjønnevåg
2010-04-28 5:07 ` [PATCH 3/8] PM: suspend_block: Abort task freezing if a suspend_blocker is active Pavel Machek
2010-04-28 5:07 ` Pavel Machek
2010-04-28 20:58 ` [PATCH 2/8] PM: suspend_block: Add driver to access suspend blockers from user-space Rafael J. Wysocki
2010-04-28 22:31 ` Arve Hjønnevåg
2010-04-28 23:05 ` Rafael J. Wysocki
2010-04-28 23:05 ` Rafael J. Wysocki
2010-04-28 23:38 ` Arve Hjønnevåg
2010-04-29 21:11 ` Rafael J. Wysocki
2010-04-29 21:11 ` Rafael J. Wysocki
2010-04-29 23:41 ` Arve Hjønnevåg
2010-04-29 23:41 ` Arve Hjønnevåg
2010-04-28 23:38 ` Arve Hjønnevåg
2010-04-28 22:31 ` Arve Hjønnevåg
2010-04-28 20:58 ` Rafael J. Wysocki
2010-04-28 6:07 ` [PATCH 1/8] PM: Add suspend block api Pavel Machek
2010-04-28 6:07 ` Pavel Machek
2010-04-28 19:13 ` Alan Stern
2010-04-28 19:13 ` Alan Stern
2010-04-28 21:13 ` Rafael J. Wysocki
2010-04-28 21:13 ` Rafael J. Wysocki
2010-04-28 23:35 ` Arve Hjønnevåg
2010-04-28 23:35 ` Arve Hjønnevåg
2010-04-29 15:41 ` Alan Stern
2010-04-29 15:41 ` Alan Stern
2010-04-29 23:39 ` Arve Hjønnevåg
2010-04-29 23:39 ` Arve Hjønnevåg
2010-04-30 14:41 ` Alan Stern
2010-04-30 14:41 ` Alan Stern
2010-04-28 20:50 ` Rafael J. Wysocki
2010-04-28 20:50 ` Rafael J. Wysocki
2010-04-29 3:37 ` Arve Hjønnevåg
2010-04-29 3:37 ` Arve Hjønnevåg
2010-04-29 21:16 ` Rafael J. Wysocki
2010-04-29 21:16 ` Rafael J. Wysocki
2010-04-30 4:24 ` Tejun Heo
2010-04-30 4:24 ` Tejun Heo
2010-04-30 17:26 ` Oleg Nesterov
2010-05-20 8:30 ` Tejun Heo
2010-05-20 8:30 ` Tejun Heo
2010-05-20 22:27 ` Rafael J. Wysocki
2010-05-21 6:35 ` Tejun Heo
2010-05-21 6:35 ` Tejun Heo
2010-05-20 22:27 ` Rafael J. Wysocki
2010-04-30 17:26 ` Oleg Nesterov
2010-05-06 15:18 ` Alan Stern
2010-05-06 19:28 ` Rafael J. Wysocki
2010-05-06 19:28 ` Rafael J. Wysocki
2010-05-06 19:40 ` Alan Stern
2010-05-06 19:40 ` Alan Stern
2010-05-06 23:48 ` Arve Hjønnevåg
2010-05-07 14:22 ` Alan Stern
2010-05-07 14:22 ` Alan Stern
2010-05-06 23:48 ` Arve Hjønnevåg
2010-05-06 15:18 ` Alan Stern
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