Re: [Intel-gfx] [PATCH 12/22] drm/i915/guc: Don't touch guc_state.sched_state without a lock

From: kernel test robot <lkp@intel.com>
To: Matthew Brost <matthew.brost@intel.com>,
	intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org
Cc: clang-built-linux@googlegroups.com, kbuild-all@lists.01.org,
	daniel.vetter@ffwll.ch
Subject: Re: [Intel-gfx] [PATCH 12/22] drm/i915/guc: Don't touch guc_state.sched_state without a lock
Date: Tue, 17 Aug 2021 15:21:47 +0800	[thread overview]
Message-ID: <202108171551.XbDQQl9N-lkp@intel.com> (raw)
In-Reply-To: <20210816135139.10060-13-matthew.brost@intel.com>

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Hi Matthew,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on drm-intel/for-linux-next]
[also build test WARNING on drm-tip/drm-tip next-20210816]
[cannot apply to drm-exynos/exynos-drm-next tegra-drm/drm/tegra/for-next drm/drm-next v5.14-rc6]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Matthew-Brost/Clean-up-GuC-CI-failures-simplify-locking-and-kernel-DOC/20210816-220020
base:   git://anongit.freedesktop.org/drm-intel for-linux-next
config: i386-randconfig-a006-20210817 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 2c6448cdc2f68f8c28fd0bd9404182b81306e6e6)
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
        # https://github.com/0day-ci/linux/commit/e423aedb52eccddd07fb104ba0a6bed20ff9481a
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Matthew-Brost/Clean-up-GuC-CI-failures-simplify-locking-and-kernel-DOC/20210816-220020
        git checkout e423aedb52eccddd07fb104ba0a6bed20ff9481a
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=i386 

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

All warnings (new ones prefixed by >>):

>> drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c:158:20: warning: function 'sched_state_is_init' is not needed and will not be emitted [-Wunneeded-internal-declaration]
   static inline bool sched_state_is_init(struct intel_context *ce)
                      ^
   1 warning generated.

vim +/sched_state_is_init +158 drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c

   157	
 > 158	static inline bool sched_state_is_init(struct intel_context *ce)
   159	{
   160		/*
   161		 * XXX: Kernel contexts can have SCHED_STATE_NO_LOCK_REGISTERED after
   162		 * suspend.
   163		 */
   164		return !(atomic_read(&ce->guc_sched_state_no_lock) &
   165			 ~SCHED_STATE_NO_LOCK_REGISTERED) &&
   166			!(ce->guc_state.sched_state &= ~SCHED_STATE_BLOCKED_MASK);
   167	}
   168	

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

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