Hi Maarten,

I love your patch! Yet something to improve:

[auto build test ERROR on drm-tip/drm-tip]
[cannot apply to drm-intel/for-linux-next tip/perf/core v5.7-rc3 next-20200501]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:    https://github.com/0day-ci/linux/commits/Maarten-Lankhorst/perf-core-Only-copy-to-user-after-completely-unlocking-all-locks-v3/20200502-001525
base:   git://anongit.freedesktop.org/drm/drm-tip drm-tip
config: i386-defconfig (attached as .config)
compiler: gcc-7 (Ubuntu 7.5.0-6ubuntu2) 7.5.0
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kbuild test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   In file included from arch/x86/include/asm/bug.h:83:0,
                    from include/linux/bug.h:5,
                    from include/linux/cpumask.h:14,
                    from arch/x86/include/asm/cpumask.h:5,
                    from arch/x86/include/asm/msr.h:11,
                    from arch/x86/include/asm/processor.h:22,
                    from include/linux/mutex.h:19,
                    from include/linux/kernfs.h:12,
                    from include/linux/sysfs.h:16,
                    from include/linux/kobject.h:20,
                    from include/linux/of.h:17,
                    from include/linux/irqdomain.h:35,
                    from include/linux/acpi.h:13,
                    from drivers/gpu/drm/i915/i915_drv.c:30:
   drivers/gpu/drm/i915/i915_vma.h: In function 'i915_vma_pin':
>> include/linux/dma-resv.h:80:28: error: implicit declaration of function 'lockdep_is_held'; did you mean 'lockdep_assert_held'? [-Werror=implicit-function-declaration]
    #define dma_resv_held(obj) lockdep_is_held(&(obj)->lock.base)
                               ^
   include/asm-generic/bug.h:151:27: note: in definition of macro 'WARN_ONCE'
     int __ret_warn_once = !!(condition);   \
                              ^~~~~~~~~
   drivers/gpu/drm/i915/i915_vma.h:245:2: note: in expansion of macro 'WARN_ON_ONCE'
     WARN_ON_ONCE(vma->resv && dma_resv_held(vma->resv));
     ^~~~~~~~~~~~
   drivers/gpu/drm/i915/i915_vma.h:245:28: note: in expansion of macro 'dma_resv_held'
     WARN_ON_ONCE(vma->resv && dma_resv_held(vma->resv));
                               ^~~~~~~~~~~~~
   cc1: some warnings being treated as errors

vim +80 include/linux/dma-resv.h

786d7257e537da0 include/linux/reservation.h Maarten Lankhorst 2013-06-27  79  
52791eeec1d9f4a include/linux/dma-resv.h    Christian König   2019-08-11 @80  #define dma_resv_held(obj) lockdep_is_held(&(obj)->lock.base)
52791eeec1d9f4a include/linux/dma-resv.h    Christian König   2019-08-11  81  #define dma_resv_assert_held(obj) lockdep_assert_held(&(obj)->lock.base)
04a5faa8cbe5a8e include/linux/reservation.h Maarten Lankhorst 2014-07-01  82  

:::::: The code at line 80 was first introduced by commit
:::::: 52791eeec1d9f4a7e7fe08aaba0b1553149d93bc dma-buf: rename reservation_object to dma_resv

:::::: TO: Christian König <christian.koenig@amd.com>
:::::: CC: Christian König <christian.koenig@amd.com>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org