linux-kernel - Re: Re: [PATCH tip/core/rcu 02/18] rcu: Move rcu_report_exp

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Message-ID: <201510072009.PqS2YzTh%fengguang.wu@intel.com>
Date:	Wed, 7 Oct 2015 20:05:42 +0800
From:	kbuild test robot <lkp@...el.com>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	kbuild-all@...org,
	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...nel.org>,
	Lai Jiangshan <jiangshanlai@...il.com>, dipankar@...ibm.com,
	Andrew Morton <akpm@...ux-foundation.org>,
	josh@...htriplett.org, Thomas Gleixner <tglx@...utronix.de>,
	rostedt <rostedt@...dmis.org>, dhowells@...hat.com,
	edumazet@...gle.com, dvhart@...ux.intel.com, fweisbec@...il.com,
	oleg@...hat.com, bobby prani <bobby.prani@...il.com>
Subject: Re: Re: [PATCH tip/core/rcu 02/18] rcu: Move rcu_report_exp_rnp() to
 allow consolidation

Hi Peter,

[auto build test ERROR on v4.3-rc4 -- if it's inappropriate base, please ignore]

config: i386-randconfig-x004-201540 (attached as .config)
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All errors (new ones prefixed by >>):

   kernel/rcu/tree.c: In function '_raw_spin_lock_irqsave_rcu_node':
>> kernel/rcu/tree.c:1488:2: error: too many arguments to function '_raw_spin_lock_irqsave'
     _raw_spin_lock_irqsave(&rnp->lock, flags);
     ^
   In file included from include/linux/spinlock.h:280:0,
                    from kernel/rcu/tree.c:33:
   include/linux/spinlock_api_smp.h:34:26: note: declared here
    unsigned long __lockfunc _raw_spin_lock_irqsave(raw_spinlock_t *lock)
                             ^
   kernel/rcu/tree.c: At top level:
>> kernel/rcu/tree.c:1493:34: error: expected declaration specifiers or '...' before '(' token
     _raw_spin_lock_irqsave_rcu_node((rnp), &(flags))
                                     ^
>> kernel/rcu/tree.c:1493:41: error: expected declaration specifiers or '...' before '&' token
     _raw_spin_lock_irqsave_rcu_node((rnp), &(flags))
                                            ^
   kernel/rcu/tree.c: In function 'note_gp_changes':
>> kernel/rcu/tree.c:1807:7: error: implicit declaration of function 'raw_spin_trylock_rcu_node' [-Werror=implicit-function-declaration]
         !raw_spin_trylock_rcu_node(rnp)) { /* irqs already off, so later. */
          ^
   cc1: some warnings being treated as errors

vim +/_raw_spin_lock_irqsave +1488 kernel/rcu/tree.c

  1482		smp_mb__after_unlock_lock();
  1483	}
  1484	
  1485	static inline void
  1486	_raw_spin_lock_irqsave_rcu_node(struct rcu_node *rnp, unsigned long *flags)
  1487	{
> 1488		_raw_spin_lock_irqsave(&rnp->lock, flags);
  1489		smp_mb__after_unlock_lock();
  1490	}
  1491	
  1492	#define raw_spin_lock_irqsave_rcu_node(rnp, flags)
> 1493		_raw_spin_lock_irqsave_rcu_node((rnp), &(flags))
  1494	
  1495	static inline bool raw_spin_trylock_rcu_node(struct rcu_node *rnp)
  1496	{

---
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