Hi "Christian, I love your patch! Yet something to improve: [auto build test ERROR on rdma/for-next] [also build test ERROR on tegra-drm/drm/tegra/for-next v5.13-rc5 next-20210604] [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/RDMA-umem-fix-missing-automated-rename/20210607-150846 base: https://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma.git for-next config: mips-randconfig-r031-20210607 (attached as .config) compiler: mipsel-linux-gcc (GCC) 9.3.0 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/6a174683a13a824a00a001d656d1a1c2fb469ab8 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Christian-K-nig/RDMA-umem-fix-missing-automated-rename/20210607-150846 git checkout 6a174683a13a824a00a001d656d1a1c2fb469ab8 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=mips If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All error/warnings (new ones prefixed by >>): drivers/infiniband/core/umem_dmabuf.c: In function 'ib_umem_dmabuf_map_pages': >> drivers/infiniband/core/umem_dmabuf.c:69:10: error: implicit declaration of function 'dma_resv_excl_fence'; did you mean 'dma_resv_add_excl_fence'? [-Werror=implicit-function-declaration] 69 | fence = dma_resv_excl_fence(umem_dmabuf->attach->dmabuf->resv); | ^~~~~~~~~~~~~~~~~~~ | dma_resv_add_excl_fence >> drivers/infiniband/core/umem_dmabuf.c:69:8: warning: assignment to 'struct dma_fence *' from 'int' makes pointer from integer without a cast [-Wint-conversion] 69 | fence = dma_resv_excl_fence(umem_dmabuf->attach->dmabuf->resv); | ^ cc1: some warnings being treated as errors vim +69 drivers/infiniband/core/umem_dmabuf.c 11 12 int ib_umem_dmabuf_map_pages(struct ib_umem_dmabuf *umem_dmabuf) 13 { 14 struct sg_table *sgt; 15 struct scatterlist *sg; 16 struct dma_fence *fence; 17 unsigned long start, end, cur = 0; 18 unsigned int nmap = 0; 19 int i; 20 21 dma_resv_assert_held(umem_dmabuf->attach->dmabuf->resv); 22 23 if (umem_dmabuf->sgt) 24 goto wait_fence; 25 26 sgt = dma_buf_map_attachment(umem_dmabuf->attach, DMA_BIDIRECTIONAL); 27 if (IS_ERR(sgt)) 28 return PTR_ERR(sgt); 29 30 /* modify the sg list in-place to match umem address and length */ 31 32 start = ALIGN_DOWN(umem_dmabuf->umem.address, PAGE_SIZE); 33 end = ALIGN(umem_dmabuf->umem.address + umem_dmabuf->umem.length, 34 PAGE_SIZE); 35 for_each_sgtable_dma_sg(sgt, sg, i) { 36 if (start < cur + sg_dma_len(sg) && cur < end) 37 nmap++; 38 if (cur <= start && start < cur + sg_dma_len(sg)) { 39 unsigned long offset = start - cur; 40 41 umem_dmabuf->first_sg = sg; 42 umem_dmabuf->first_sg_offset = offset; 43 sg_dma_address(sg) += offset; 44 sg_dma_len(sg) -= offset; 45 cur += offset; 46 } 47 if (cur < end && end <= cur + sg_dma_len(sg)) { 48 unsigned long trim = cur + sg_dma_len(sg) - end; 49 50 umem_dmabuf->last_sg = sg; 51 umem_dmabuf->last_sg_trim = trim; 52 sg_dma_len(sg) -= trim; 53 break; 54 } 55 cur += sg_dma_len(sg); 56 } 57 58 umem_dmabuf->umem.sg_head.sgl = umem_dmabuf->first_sg; 59 umem_dmabuf->umem.sg_head.nents = nmap; 60 umem_dmabuf->umem.nmap = nmap; 61 umem_dmabuf->sgt = sgt; 62 63 wait_fence: 64 /* 65 * Although the sg list is valid now, the content of the pages 66 * may be not up-to-date. Wait for the exporter to finish 67 * the migration. 68 */ > 69 fence = dma_resv_excl_fence(umem_dmabuf->attach->dmabuf->resv); 70 if (fence) 71 return dma_fence_wait(fence, false); 72 73 return 0; 74 } 75 EXPORT_SYMBOL(ib_umem_dmabuf_map_pages); 76 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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