linux-kernel - drivers/gpu/drm/i915/i915_sw_fence.c:41:20: error: unused function 'debug_fence_init

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Message-ID: <202101150854.aphrCtou-lkp@intel.com>
Date:   Fri, 15 Jan 2021 08:09:06 +0800
From:   kernel test robot <lkp@...el.com>
To:     Masahiro Yamada <yamada.masahiro@...ionext.com>
Cc:     kbuild-all@...ts.01.org, clang-built-linux@...glegroups.com,
        linux-kernel@...r.kernel.org,
        Nathan Chancellor <natechancellor@...il.com>
Subject: drivers/gpu/drm/i915/i915_sw_fence.c:41:20: error: unused function
 'debug_fence_init_onstack'

Hi Masahiro,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   146620506274bd24d52fb1c589110a30eed8240b
commit: 6863f5643dd717376c2fdc85a47a00f9d738a834 kbuild: allow Clang to find unused static inline functions for W=1 build
date:   1 year, 4 months ago
config: x86_64-randconfig-a014-20210115 (attached as .config)
compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 6077d55381a6aa3e947ef7abdc36a7515c598c8a)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # install x86_64 cross compiling tool for clang build
        # apt-get install binutils-x86-64-linux-gnu
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6863f5643dd717376c2fdc85a47a00f9d738a834
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 6863f5643dd717376c2fdc85a47a00f9d738a834
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 

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

All errors (new ones prefixed by >>):

>> drivers/gpu/drm/i915/i915_sw_fence.c:41:20: error: unused function 'debug_fence_init_onstack' [-Werror,-Wunused-function]
   static inline void debug_fence_init_onstack(struct i915_sw_fence *fence)
                      ^
   1 error generated.


vim +/debug_fence_init_onstack +41 drivers/gpu/drm/i915/i915_sw_fence.c

fc1584059d6c438b Chris Wilson 2016-11-25  40  
214707fc2ce08d09 Chris Wilson 2017-10-12 @41  static inline void debug_fence_init_onstack(struct i915_sw_fence *fence)
214707fc2ce08d09 Chris Wilson 2017-10-12  42  {
214707fc2ce08d09 Chris Wilson 2017-10-12  43  	debug_object_init_on_stack(fence, &i915_sw_fence_debug_descr);
214707fc2ce08d09 Chris Wilson 2017-10-12  44  }
214707fc2ce08d09 Chris Wilson 2017-10-12  45  

:::::: The code at line 41 was first introduced by commit
:::::: 214707fc2ce08d09982bc4fe4b7a1c1f010e82be drm/i915/selftests: Wrap a timer into a i915_sw_fence

:::::: TO: Chris Wilson <chris@...is-wilson.co.uk>
:::::: CC: Chris Wilson <chris@...is-wilson.co.uk>

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

Download attachment ".config.gz" of type "application/gzip" (29912 bytes)