[Intel-gfx] [PATCH] Avoid mutex starvation when optimistic spinning is disabled

[kbuild test robot]

Hi Jason,

[auto build test ERROR on tip/locking/core]
[also build test ERROR on v4.8-rc3 next-20160823]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
[Suggest to use git(>=2.9.0) format-patch --base=<commit> (or --base=auto for convenience) to record what (public, well-known) commit your patch series was built on]
[Check https://git-scm.com/docs/git-format-patch for more information]

url:    https://github.com/0day-ci/linux/commits/Maarten-Lankhorst/Avoid-mutex-starvation-when-optimistic-spinning-is-disabled/20160823-161801
config: x86_64-randconfig-x013-201634 (attached as .config)
compiler: gcc-6 (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

   kernel/locking/mutex.c: In function '__mutex_lock_common':
>> kernel/locking/mutex.c:638:7: error: 'struct mutex' has no member named 'yield_to_waiter'
      lock->yield_to_waiter = false;
          ^~

vim +638 kernel/locking/mutex.c

   632		/* set it to 0 if there are no waiters left: */
   633		if (likely(list_empty(&lock->wait_list)))
   634			atomic_set(&lock->count, 0);
   635		debug_mutex_free_waiter(&waiter);
   636	
   637		if (yield_forced)
 > 638			lock->yield_to_waiter = false;
   639	
   640	skip_wait:
   641		/* got the lock - cleanup and rejoice! */

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation
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