From: kernel test robot <lkp@intel.com>
To: "Christian König" <ckoenig.leichtzumerken@gmail.com>,
dri-devel@lists.freedesktop.org
Cc: ray.huang@amd.com, kbuild-all@lists.01.org
Subject: Re: [PATCH 2/3] drm/ttm: remove swap LRU v2
Date: Tue, 16 Mar 2021 02:54:02 +0800 [thread overview]
Message-ID: <202103160230.Z9c2CTBN-lkp@intel.com> (raw)
In-Reply-To: <20210315160422.152528-2-christian.koenig@amd.com>
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Hi "Christian,
I love your patch! Perhaps something to improve:
[auto build test WARNING on drm-tip/drm-tip]
[cannot apply to drm-intel/for-linux-next drm-exynos/exynos-drm-next tegra-drm/drm/tegra/for-next linus/master drm/drm-next v5.12-rc3 next-20210315]
[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/Christian-K-nig/drm-ttm-move-swapout-logic-around/20210316-000551
base: git://anongit.freedesktop.org/drm/drm-tip drm-tip
config: i386-randconfig-s002-20210315 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce:
# apt-get install sparse
# sparse version: v0.6.3-277-gc089cd2d-dirty
# https://github.com/0day-ci/linux/commit/70ae63f3a85b9791dfcf38034c304aedda122e7b
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Christian-K-nig/drm-ttm-move-swapout-logic-around/20210316-000551
git checkout 70ae63f3a85b9791dfcf38034c304aedda122e7b
# save the attached .config to linux build tree
make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=i386
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
"sparse warnings: (new ones prefixed by >>)"
drivers/gpu/drm/ttm/ttm_device.c:42:1: sparse: sparse: symbol 'ttm_global_mutex' was not declared. Should it be static?
drivers/gpu/drm/ttm/ttm_device.c:43:10: sparse: sparse: symbol 'ttm_glob_use_count' was not declared. Should it be static?
>> drivers/gpu/drm/ttm/ttm_device.c:125:6: sparse: sparse: context imbalance in 'ttm_device_swapout' - wrong count at exit
vim +/ttm_device_swapout +125 drivers/gpu/drm/ttm/ttm_device.c
124
> 125 long ttm_device_swapout(struct ttm_device *bdev, struct ttm_operation_ctx *ctx,
126 gfp_t gfp_flags)
127 {
128 struct ttm_global *glob = &ttm_glob;
129 struct ttm_resource_manager *man;
130 struct ttm_buffer_object *bo;
131 unsigned i, j;
132 int ret;
133
134 spin_lock(&glob->lru_lock);
135 for (i = TTM_PL_SYSTEM; i < TTM_NUM_MEM_TYPES; ++i) {
136 man = ttm_manager_type(bdev, i);
137 if (!man || !man->use_tt)
138 continue;
139
140 for (j = 0; j < TTM_MAX_BO_PRIORITY; ++j) {
141 list_for_each_entry(bo, &man->lru[j], lru) {
142 long num_pages;
143
144 if (!bo->ttm ||
145 bo->ttm->page_flags & TTM_PAGE_FLAG_SG ||
146 bo->ttm->page_flags & TTM_PAGE_FLAG_SWAPPED)
147 continue;
148
149 num_pages = bo->ttm->num_pages;
150 ret = ttm_bo_swapout(bo, ctx, gfp_flags);
151 /* ttm_bo_swapout has dropped the lru_lock */
152 if (!ret)
153 return num_pages;
154 if (ret != -EBUSY)
155 return ret;
156 }
157 }
158 }
159 spin_unlock(&glob->lru_lock);
160 return 0;
161 }
162 EXPORT_SYMBOL(ttm_device_swapout);
163
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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next prev parent reply other threads:[~2021-03-15 18:55 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-15 16:04 [PATCH 1/3] drm/ttm: move swapout logic around Christian König
2021-03-15 16:04 ` [PATCH 2/3] drm/ttm: remove swap LRU v2 Christian König
2021-03-15 18:54 ` kernel test robot [this message]
2021-03-15 18:54 ` Matthew Auld
2021-03-15 19:27 ` Christian König
2021-03-15 16:04 ` [PATCH 3/3] drm/ttm: switch to per device LRU lock Christian König
2021-03-15 20:17 ` kernel test robot
2021-03-16 9:35 ` Daniel Vetter
2021-03-16 12:03 ` Christian König
2021-03-16 12:05 ` Daniel Vetter
2021-03-16 15:13 ` Christian König
2021-03-15 18:47 ` [PATCH 1/3] drm/ttm: move swapout logic around kernel test robot
2021-03-19 9:41 ` kernel test robot
-- strict thread matches above, loose matches on Subject: below --
2021-02-11 13:29 Christian König
2021-02-11 13:29 ` [PATCH 2/3] drm/ttm: remove swap LRU v2 Christian König
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