linux-kernel - Re: [PATCH v8 09/14] lockdep: Apply crossrelease to completions

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Date:   Mon, 7 Aug 2017 18:20:39 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Byungchul Park <byungchul.park@....com>
Cc:     kbuild-all@...org, peterz@...radead.org, mingo@...nel.org,
        tglx@...utronix.de, walken@...gle.com, boqun.feng@...il.com,
        kirill@...temov.name, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, akpm@...ux-foundation.org, willy@...radead.org,
        npiggin@...il.com, kernel-team@....com
Subject: Re: [PATCH v8 09/14] lockdep: Apply crossrelease to completions

Hi Byungchul,

[auto build test ERROR on linus/master]
[also build test ERROR on v4.13-rc4 next-20170804]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Byungchul-Park/lockdep-Implement-crossrelease-feature/20170807-172617
config: alpha-allmodconfig (attached as .config)
compiler: alpha-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
        wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=alpha 

All errors (new ones prefixed by >>):

   warning: (LOCKDEP_COMPLETE) selects LOCKDEP_CROSSRELEASE which has unmet direct dependencies (PROVE_LOCKING)
   warning: (LOCKDEP_COMPLETE) selects LOCKDEP_CROSSRELEASE which has unmet direct dependencies (PROVE_LOCKING)
   In file included from include/linux/srcutree.h:28:0,
                    from include/linux/srcu.h:62,
                    from include/linux/notifier.h:15,
                    from include/linux/memory_hotplug.h:6,
                    from include/linux/mmzone.h:771,
                    from include/linux/gfp.h:5,
                    from include/linux/mm.h:9,
                    from include/linux/pid_namespace.h:6,
                    from include/linux/ptrace.h:9,
                    from arch/alpha/kernel/asm-offsets.c:10:
>> include/linux/completion.h:32:27: error: field 'map' has incomplete type
     struct lockdep_map_cross map;
                              ^~~
   make[2]: *** [arch/alpha/kernel/asm-offsets.s] Error 1
   make[2]: Target '__build' not remade because of errors.
   make[1]: *** [prepare0] Error 2
   make[1]: Target 'prepare' not remade because of errors.
   make: *** [sub-make] Error 2

vim +/map +32 include/linux/completion.h

    15	
    16	/*
    17	 * struct completion - structure used to maintain state for a "completion"
    18	 *
    19	 * This is the opaque structure used to maintain the state for a "completion".
    20	 * Completions currently use a FIFO to queue threads that have to wait for
    21	 * the "completion" event.
    22	 *
    23	 * See also:  complete(), wait_for_completion() (and friends _timeout,
    24	 * _interruptible, _interruptible_timeout, and _killable), init_completion(),
    25	 * reinit_completion(), and macros DECLARE_COMPLETION(),
    26	 * DECLARE_COMPLETION_ONSTACK().
    27	 */
    28	struct completion {
    29		unsigned int done;
    30		wait_queue_head_t wait;
    31	#ifdef CONFIG_LOCKDEP_COMPLETE
  > 32		struct lockdep_map_cross map;
    33	#endif
    34	};
    35	

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