linux-kernel - Re: [PATCH v5 07/20] kthread: Initial support for delayed kthread work

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Message-ID: <201602230028.qy3AtO8V%fengguang.wu@intel.com>
Date:	Tue, 23 Feb 2016 00:06:50 +0800
From:	kbuild test robot <lkp@...el.com>
To:	Petr Mladek <pmladek@...e.com>
Cc:	kbuild-all@...org, Andrew Morton <akpm@...ux-foundation.org>,
	Oleg Nesterov <oleg@...hat.com>, Tejun Heo <tj@...nel.org>,
	Ingo Molnar <mingo@...hat.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Josh Triplett <josh@...htriplett.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Jiri Kosina <jkosina@...e.cz>, Borislav Petkov <bp@...e.de>,
	Michal Hocko <mhocko@...e.cz>, linux-mm@...ck.org,
	Vlastimil Babka <vbabka@...e.cz>, linux-api@...r.kernel.org,
	linux-kernel@...r.kernel.org, Petr Mladek <pmladek@...e.com>
Subject: Re: [PATCH v5 07/20] kthread: Initial support for delayed kthread
 work

Hi Petr,

[auto build test WARNING on soc-thermal/next]
[also build test WARNING on v4.5-rc5 next-20160222]
[if your patch is applied to the wrong git tree, please drop us a note to help improving the system]

url:    https://github.com/0day-ci/linux/commits/Petr-Mladek/kthread-Use-kthread-worker-API-more-widely/20160222-230250
base:   https://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal next
reproduce: make htmldocs

All warnings (new ones prefixed by >>):

   include/linux/init.h:1: warning: no structured comments found
>> kernel/kthread.c:833: warning: No description found for parameter 'dwork'
>> kernel/kthread.c:833: warning: No description found for parameter 'delay'
>> kernel/kthread.c:833: warning: Excess function parameter 'work' description in 'queue_delayed_kthread_work'
   kernel/sys.c:1: warning: no structured comments found
   drivers/dma-buf/seqno-fence.c:1: warning: no structured comments found
   drivers/dma-buf/reservation.c:1: warning: no structured comments found
   include/linux/reservation.h:1: warning: no structured comments found
   include/linux/spi/spi.h:540: warning: No description found for parameter 'max_transfer_size'

vim +/dwork +833 kernel/kthread.c

   817	 *	after a delay.
   818	 * @worker: target kthread_worker
   819	 * @work: kthread_work to queue
   820	 * delay: number of jiffies to wait before queuing
   821	 *
   822	 * If the work has not been pending it starts a timer that will queue
   823	 * the work after the given @delay. If @delay is zero, it queues the
   824	 * work immediately.
   825	 *
   826	 * Return: %false if the @work has already been pending. It means that
   827	 * either the timer was running or the work was queued. It returns %true
   828	 * otherwise.
   829	 */
   830	bool queue_delayed_kthread_work(struct kthread_worker *worker,
   831					struct delayed_kthread_work *dwork,
   832					unsigned long delay)
 > 833	{
   834		struct kthread_work *work = &dwork->work;
   835		unsigned long flags;
   836		bool ret = false;
   837	
   838		spin_lock_irqsave(&worker->lock, flags);
   839	
   840		if (list_empty(&work->node)) {
   841			__queue_delayed_kthread_work(worker, dwork, delay);

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