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Date: Sat, 23 Apr 2022 18:31:40 +0800
From: kernel test robot <lkp@...el.com>
To: Vasily Averin <vvs@...nvz.org>, Vlastimil Babka <vbabka@...e.cz>,
Shakeel Butt <shakeelb@...gle.com>
Cc: llvm@...ts.linux.dev, kbuild-all@...ts.01.org, kernel@...nvz.org,
Florian Westphal <fw@...len.de>, linux-kernel@...r.kernel.org,
Roman Gushchin <roman.gushchin@...ux.dev>,
Michal Hocko <mhocko@...e.com>, cgroups@...r.kernel.org,
netdev@...r.kernel.org, Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>
Subject: Re: [PATCH] net: set proper memcg for net_init hooks allocations
Hi Vasily,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on linus/master]
[also build test WARNING on v5.18-rc3 next-20220422]
[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/intel-lab-lkp/linux/commits/Vasily-Averin/net-set-proper-memcg-for-net_init-hooks-allocations/20220423-160759
base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git c00c5e1d157bec0ef0b0b59aa5482eb8dc7e8e49
config: riscv-randconfig-r042-20220422 (https://download.01.org/0day-ci/archive/20220423/202204231806.8O86U791-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 5bd87350a5ae429baf8f373cb226a57b62f87280)
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 riscv cross compiling tool for clang build
# apt-get install binutils-riscv64-linux-gnu
# https://github.com/intel-lab-lkp/linux/commit/3b379e5391e36e13b9f36305aa6d233fb03d4e58
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Vasily-Averin/net-set-proper-memcg-for-net_init-hooks-allocations/20220423-160759
git checkout 3b379e5391e36e13b9f36305aa6d233fb03d4e58
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash drivers/gpu/drm/exynos/
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>
All warnings (new ones prefixed by >>):
In file included from drivers/gpu/drm/exynos/exynos_drm_dma.c:15:
In file included from drivers/gpu/drm/exynos/exynos_drm_drv.h:16:
In file included from include/drm/drm_crtc.h:28:
In file included from include/linux/i2c.h:19:
In file included from include/linux/regulator/consumer.h:35:
In file included from include/linux/suspend.h:5:
In file included from include/linux/swap.h:9:
include/linux/memcontrol.h:1773:21: error: call to undeclared function 'css_tryget'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
} while (memcg && !css_tryget(&memcg->css));
^
include/linux/memcontrol.h:1773:38: error: incomplete definition of type 'struct mem_cgroup'
} while (memcg && !css_tryget(&memcg->css));
~~~~~^
include/linux/mm_types.h:31:8: note: forward declaration of 'struct mem_cgroup'
struct mem_cgroup;
^
>> drivers/gpu/drm/exynos/exynos_drm_dma.c:55:35: warning: implicit conversion from 'unsigned long long' to 'unsigned int' changes value from 18446744073709551615 to 4294967295 [-Wconstant-conversion]
dma_set_max_seg_size(subdrv_dev, DMA_BIT_MASK(32));
~~~~~~~~~~~~~~~~~~~~ ^~~~~~~~~~~~~~~~
include/linux/dma-mapping.h:76:40: note: expanded from macro 'DMA_BIT_MASK'
#define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1))
^~~~~
1 warning and 2 errors generated.
vim +55 drivers/gpu/drm/exynos/exynos_drm_dma.c
67fbf3a3ef8443 Andrzej Hajda 2018-10-12 33
67fbf3a3ef8443 Andrzej Hajda 2018-10-12 34 /*
67fbf3a3ef8443 Andrzej Hajda 2018-10-12 35 * drm_iommu_attach_device- attach device to iommu mapping
67fbf3a3ef8443 Andrzej Hajda 2018-10-12 36 *
67fbf3a3ef8443 Andrzej Hajda 2018-10-12 37 * @drm_dev: DRM device
67fbf3a3ef8443 Andrzej Hajda 2018-10-12 38 * @subdrv_dev: device to be attach
67fbf3a3ef8443 Andrzej Hajda 2018-10-12 39 *
67fbf3a3ef8443 Andrzej Hajda 2018-10-12 40 * This function should be called by sub drivers to attach it to iommu
67fbf3a3ef8443 Andrzej Hajda 2018-10-12 41 * mapping.
67fbf3a3ef8443 Andrzej Hajda 2018-10-12 42 */
67fbf3a3ef8443 Andrzej Hajda 2018-10-12 43 static int drm_iommu_attach_device(struct drm_device *drm_dev,
07dc3678bacc2a Marek Szyprowski 2020-03-09 44 struct device *subdrv_dev, void **dma_priv)
67fbf3a3ef8443 Andrzej Hajda 2018-10-12 45 {
67fbf3a3ef8443 Andrzej Hajda 2018-10-12 46 struct exynos_drm_private *priv = drm_dev->dev_private;
b9c633882de460 Marek Szyprowski 2020-06-01 47 int ret = 0;
67fbf3a3ef8443 Andrzej Hajda 2018-10-12 48
67fbf3a3ef8443 Andrzej Hajda 2018-10-12 49 if (get_dma_ops(priv->dma_dev) != get_dma_ops(subdrv_dev)) {
6f83d20838c099 Inki Dae 2019-04-15 50 DRM_DEV_ERROR(subdrv_dev, "Device %s lacks support for IOMMU\n",
67fbf3a3ef8443 Andrzej Hajda 2018-10-12 51 dev_name(subdrv_dev));
67fbf3a3ef8443 Andrzej Hajda 2018-10-12 52 return -EINVAL;
67fbf3a3ef8443 Andrzej Hajda 2018-10-12 53 }
67fbf3a3ef8443 Andrzej Hajda 2018-10-12 54
ddfd4ab6bb0883 Marek Szyprowski 2020-07-07 @55 dma_set_max_seg_size(subdrv_dev, DMA_BIT_MASK(32));
67fbf3a3ef8443 Andrzej Hajda 2018-10-12 56 if (IS_ENABLED(CONFIG_ARM_DMA_USE_IOMMU)) {
07dc3678bacc2a Marek Szyprowski 2020-03-09 57 /*
07dc3678bacc2a Marek Szyprowski 2020-03-09 58 * Keep the original DMA mapping of the sub-device and
07dc3678bacc2a Marek Szyprowski 2020-03-09 59 * restore it on Exynos DRM detach, otherwise the DMA
07dc3678bacc2a Marek Szyprowski 2020-03-09 60 * framework considers it as IOMMU-less during the next
07dc3678bacc2a Marek Szyprowski 2020-03-09 61 * probe (in case of deferred probe or modular build)
07dc3678bacc2a Marek Szyprowski 2020-03-09 62 */
07dc3678bacc2a Marek Szyprowski 2020-03-09 63 *dma_priv = to_dma_iommu_mapping(subdrv_dev);
07dc3678bacc2a Marek Szyprowski 2020-03-09 64 if (*dma_priv)
67fbf3a3ef8443 Andrzej Hajda 2018-10-12 65 arm_iommu_detach_device(subdrv_dev);
67fbf3a3ef8443 Andrzej Hajda 2018-10-12 66
67fbf3a3ef8443 Andrzej Hajda 2018-10-12 67 ret = arm_iommu_attach_device(subdrv_dev, priv->mapping);
67fbf3a3ef8443 Andrzej Hajda 2018-10-12 68 } else if (IS_ENABLED(CONFIG_IOMMU_DMA)) {
67fbf3a3ef8443 Andrzej Hajda 2018-10-12 69 ret = iommu_attach_device(priv->mapping, subdrv_dev);
67fbf3a3ef8443 Andrzej Hajda 2018-10-12 70 }
67fbf3a3ef8443 Andrzej Hajda 2018-10-12 71
b9c633882de460 Marek Szyprowski 2020-06-01 72 return ret;
67fbf3a3ef8443 Andrzej Hajda 2018-10-12 73 }
67fbf3a3ef8443 Andrzej Hajda 2018-10-12 74
--
0-DAY CI Kernel Test Service
https://01.org/lkp
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