* [p2pmem:p2pdma_user_cmb_x4 14/24] kernel/dma/direct.c:385:11: error: implicit declaration of function 'pci_p2pdma_should_map_bus'
@ 2020-10-02 9:49 kernel test robot
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From: kernel test robot @ 2020-10-02 9:49 UTC (permalink / raw)
To: kbuild-all
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tree: https://github.com/sbates130272/linux-p2pmem.git p2pdma_user_cmb_x4
head: fa4cb582249aff75fc288e643e5dc9b6c303daaa
commit: c2a06cbc32a9c52483512859be6b79e47516c3b3 [14/24] dma-direct: Support PCI P2PDMA pages in dma-direct map_sg
config: x86_64-randconfig-a001-20200930 (attached as .config)
compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project bcd05599d0e53977a963799d6ee4f6e0bc21331b)
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://github.com/sbates130272/linux-p2pmem/commit/c2a06cbc32a9c52483512859be6b79e47516c3b3
git remote add p2pmem https://github.com/sbates130272/linux-p2pmem.git
git fetch --no-tags p2pmem p2pdma_user_cmb_x4
git checkout c2a06cbc32a9c52483512859be6b79e47516c3b3
# 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@intel.com>
All errors (new ones prefixed by >>):
>> kernel/dma/direct.c:385:11: error: implicit declaration of function 'pci_p2pdma_should_map_bus' [-Werror,-Wimplicit-function-declaration]
map = pci_p2pdma_should_map_bus(dev, pgmap);
^
>> kernel/dma/direct.c:386:48: error: too few arguments to function call, expected 3, have 1
bus_off = pci_p2pdma_bus_offset(sg_page(sg));
~~~~~~~~~~~~~~~~~~~~~ ^
include/linux/pci-p2pdma.h:88:19: note: 'pci_p2pdma_bus_offset' declared here
static inline int pci_p2pdma_bus_offset(struct device *dev,
^
2 errors generated.
vim +/pci_p2pdma_should_map_bus +385 kernel/dma/direct.c
372
373 int dma_direct_map_sg(struct device *dev, struct scatterlist *sgl, int nents,
374 enum dma_data_direction dir, unsigned long attrs)
375 {
376 struct dev_pagemap *pgmap = NULL;
377 int i, map = -1;
378 struct scatterlist *sg;
379 u64 bus_off;
380
381 for_each_sg(sgl, sg, nents, i) {
382 if (is_pci_p2pdma_page(sg_page(sg))) {
383 if (sg_page(sg)->pgmap != pgmap) {
384 pgmap = sg_page(sg)->pgmap;
> 385 map = pci_p2pdma_should_map_bus(dev, pgmap);
> 386 bus_off = pci_p2pdma_bus_offset(sg_page(sg));
387 }
388
389 if (map < 0 || !(attrs & DMA_ATTR_P2PDMA)) {
390 sg->dma_address = DMA_MAPPING_ERROR;
391 goto out_unmap;
392 }
393
394 if (map) {
395 sg->dma_address = sg_phys(sg) + sg->offset -
396 bus_off;
397 sg_dma_len(sg) = sg->length | SG_P2PDMA_FLAG;
398 continue;
399 }
400 }
401
402 sg->dma_address = dma_direct_map_page(dev, sg_page(sg),
403 sg->offset, sg->length, dir, attrs);
404 if (sg->dma_address == DMA_MAPPING_ERROR)
405 goto out_unmap;
406 sg_dma_len(sg) = sg->length;
407 }
408
409 return nents;
410
411 out_unmap:
412 dma_direct_unmap_sg(dev, sgl, i, dir, attrs | DMA_ATTR_SKIP_CPU_SYNC);
413 return 0;
414 }
415
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org
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2020-10-02 9:49 [p2pmem:p2pdma_user_cmb_x4 14/24] kernel/dma/direct.c:385:11: error: implicit declaration of function 'pci_p2pdma_should_map_bus' kernel test robot
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