* [p2pmem:p2pdma_map_ops_v2+user 14/27] include/linux/pci-p2pdma.h:122:40: warning: 'pci_p2pdma_map_segment' used but never defined
@ 2021-05-08 1:09 kernel test robot
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From: kernel test robot @ 2021-05-08 1:09 UTC (permalink / raw)
To: kbuild-all
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tree: https://github.com/sbates130272/linux-p2pmem.git p2pdma_map_ops_v2+user
head: a75ce0c517e52d783d8e9f8a71cf154e0b6dbc8c
commit: 9a0ee6b46315065601c9a05d30ca36cec2d54a44 [14/27] dma-direct: Support PCI P2PDMA pages in dma-direct map_sg
config: nios2-randconfig-s031-20210508 (attached as .config)
compiler: nios2-linux-gcc (GCC) 9.3.0
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# apt-get install sparse
# sparse version: v0.6.3-341-g8af24329-dirty
# https://github.com/sbates130272/linux-p2pmem/commit/9a0ee6b46315065601c9a05d30ca36cec2d54a44
git remote add p2pmem https://github.com/sbates130272/linux-p2pmem.git
git fetch --no-tags p2pmem p2pdma_map_ops_v2+user
git checkout 9a0ee6b46315065601c9a05d30ca36cec2d54a44
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' W=1 ARCH=nios2
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 >>):
In file included from kernel/dma/direct.c:16:
include/linux/pci-p2pdma.h:125:1: error: expected identifier or '(' before '{' token
125 | {
| ^
>> include/linux/pci-p2pdma.h:122:40: warning: 'pci_p2pdma_map_segment' used but never defined
122 | static inline enum pci_p2pdma_map_type pci_p2pdma_map_segment(
| ^~~~~~~~~~~~~~~~~~~~~~
Kconfig warnings: (for reference only)
WARNING: unmet direct dependencies detected for SERIAL_CORE_CONSOLE
Depends on TTY && HAS_IOMEM
Selected by
- EARLY_PRINTK
vim +/pci_p2pdma_map_segment +122 include/linux/pci-p2pdma.h
892769aeb9761e Logan Gunthorpe 2021-03-17 31
52916982af48d9 Logan Gunthorpe 2018-10-04 32 #ifdef CONFIG_PCI_P2PDMA
52916982af48d9 Logan Gunthorpe 2018-10-04 33 int pci_p2pdma_add_resource(struct pci_dev *pdev, int bar, size_t size,
52916982af48d9 Logan Gunthorpe 2018-10-04 34 u64 offset);
52916982af48d9 Logan Gunthorpe 2018-10-04 35 int pci_p2pdma_distance_many(struct pci_dev *provider, struct device **clients,
52916982af48d9 Logan Gunthorpe 2018-10-04 36 int num_clients, bool verbose);
52916982af48d9 Logan Gunthorpe 2018-10-04 37 bool pci_has_p2pmem(struct pci_dev *pdev);
52916982af48d9 Logan Gunthorpe 2018-10-04 38 struct pci_dev *pci_p2pmem_find_many(struct device **clients, int num_clients);
52916982af48d9 Logan Gunthorpe 2018-10-04 39 void *pci_alloc_p2pmem(struct pci_dev *pdev, size_t size);
52916982af48d9 Logan Gunthorpe 2018-10-04 40 void pci_free_p2pmem(struct pci_dev *pdev, void *addr, size_t size);
52916982af48d9 Logan Gunthorpe 2018-10-04 41 pci_bus_addr_t pci_p2pmem_virt_to_bus(struct pci_dev *pdev, void *addr);
52916982af48d9 Logan Gunthorpe 2018-10-04 42 struct scatterlist *pci_p2pmem_alloc_sgl(struct pci_dev *pdev,
52916982af48d9 Logan Gunthorpe 2018-10-04 43 unsigned int *nents, u32 length);
52916982af48d9 Logan Gunthorpe 2018-10-04 44 void pci_p2pmem_free_sgl(struct pci_dev *pdev, struct scatterlist *sgl);
52916982af48d9 Logan Gunthorpe 2018-10-04 45 void pci_p2pmem_publish(struct pci_dev *pdev, bool publish);
892769aeb9761e Logan Gunthorpe 2021-03-17 46 enum pci_p2pdma_map_type pci_p2pdma_map_type(struct dev_pagemap *pgmap,
892769aeb9761e Logan Gunthorpe 2021-03-17 47 struct device *dev);
2b9f4bb2a4fb77 Logan Gunthorpe 2019-08-12 48 int pci_p2pdma_map_sg_attrs(struct device *dev, struct scatterlist *sg,
2b9f4bb2a4fb77 Logan Gunthorpe 2019-08-12 49 int nents, enum dma_data_direction dir, unsigned long attrs);
7f73eac3a7137e Logan Gunthorpe 2019-08-12 50 void pci_p2pdma_unmap_sg_attrs(struct device *dev, struct scatterlist *sg,
7f73eac3a7137e Logan Gunthorpe 2019-08-12 51 int nents, enum dma_data_direction dir, unsigned long attrs);
3b7b58fd026fb0 Logan Gunthorpe 2021-03-17 52 enum pci_p2pdma_map_type pci_p2pdma_map_segment(
3b7b58fd026fb0 Logan Gunthorpe 2021-03-17 53 struct pci_p2pdma_map_state *state, struct device *dev,
3b7b58fd026fb0 Logan Gunthorpe 2021-03-17 54 struct scatterlist *sg);
3b7b58fd026fb0 Logan Gunthorpe 2021-03-17 55 void pci_p2pdma_map_bus_segment(struct scatterlist *pg_sg,
3b7b58fd026fb0 Logan Gunthorpe 2021-03-17 56 struct scatterlist *dma_sg);
2d7bc010f450d8 Logan Gunthorpe 2018-10-04 57 int pci_p2pdma_enable_store(const char *page, struct pci_dev **p2p_dev,
2d7bc010f450d8 Logan Gunthorpe 2018-10-04 58 bool *use_p2pdma);
2d7bc010f450d8 Logan Gunthorpe 2018-10-04 59 ssize_t pci_p2pdma_enable_show(char *page, struct pci_dev *p2p_dev,
2d7bc010f450d8 Logan Gunthorpe 2018-10-04 60 bool use_p2pdma);
52916982af48d9 Logan Gunthorpe 2018-10-04 61 #else /* CONFIG_PCI_P2PDMA */
52916982af48d9 Logan Gunthorpe 2018-10-04 62 static inline int pci_p2pdma_add_resource(struct pci_dev *pdev, int bar,
52916982af48d9 Logan Gunthorpe 2018-10-04 63 size_t size, u64 offset)
52916982af48d9 Logan Gunthorpe 2018-10-04 64 {
52916982af48d9 Logan Gunthorpe 2018-10-04 65 return -EOPNOTSUPP;
52916982af48d9 Logan Gunthorpe 2018-10-04 66 }
52916982af48d9 Logan Gunthorpe 2018-10-04 67 static inline int pci_p2pdma_distance_many(struct pci_dev *provider,
52916982af48d9 Logan Gunthorpe 2018-10-04 68 struct device **clients, int num_clients, bool verbose)
52916982af48d9 Logan Gunthorpe 2018-10-04 69 {
52916982af48d9 Logan Gunthorpe 2018-10-04 70 return -1;
52916982af48d9 Logan Gunthorpe 2018-10-04 71 }
52916982af48d9 Logan Gunthorpe 2018-10-04 72 static inline bool pci_has_p2pmem(struct pci_dev *pdev)
52916982af48d9 Logan Gunthorpe 2018-10-04 73 {
52916982af48d9 Logan Gunthorpe 2018-10-04 74 return false;
52916982af48d9 Logan Gunthorpe 2018-10-04 75 }
52916982af48d9 Logan Gunthorpe 2018-10-04 76 static inline struct pci_dev *pci_p2pmem_find_many(struct device **clients,
52916982af48d9 Logan Gunthorpe 2018-10-04 77 int num_clients)
52916982af48d9 Logan Gunthorpe 2018-10-04 78 {
52916982af48d9 Logan Gunthorpe 2018-10-04 79 return NULL;
52916982af48d9 Logan Gunthorpe 2018-10-04 80 }
52916982af48d9 Logan Gunthorpe 2018-10-04 81 static inline void *pci_alloc_p2pmem(struct pci_dev *pdev, size_t size)
52916982af48d9 Logan Gunthorpe 2018-10-04 82 {
52916982af48d9 Logan Gunthorpe 2018-10-04 83 return NULL;
52916982af48d9 Logan Gunthorpe 2018-10-04 84 }
52916982af48d9 Logan Gunthorpe 2018-10-04 85 static inline void pci_free_p2pmem(struct pci_dev *pdev, void *addr,
52916982af48d9 Logan Gunthorpe 2018-10-04 86 size_t size)
52916982af48d9 Logan Gunthorpe 2018-10-04 87 {
52916982af48d9 Logan Gunthorpe 2018-10-04 88 }
52916982af48d9 Logan Gunthorpe 2018-10-04 89 static inline pci_bus_addr_t pci_p2pmem_virt_to_bus(struct pci_dev *pdev,
52916982af48d9 Logan Gunthorpe 2018-10-04 90 void *addr)
52916982af48d9 Logan Gunthorpe 2018-10-04 91 {
52916982af48d9 Logan Gunthorpe 2018-10-04 92 return 0;
52916982af48d9 Logan Gunthorpe 2018-10-04 93 }
52916982af48d9 Logan Gunthorpe 2018-10-04 94 static inline struct scatterlist *pci_p2pmem_alloc_sgl(struct pci_dev *pdev,
52916982af48d9 Logan Gunthorpe 2018-10-04 95 unsigned int *nents, u32 length)
52916982af48d9 Logan Gunthorpe 2018-10-04 96 {
52916982af48d9 Logan Gunthorpe 2018-10-04 97 return NULL;
52916982af48d9 Logan Gunthorpe 2018-10-04 98 }
52916982af48d9 Logan Gunthorpe 2018-10-04 99 static inline void pci_p2pmem_free_sgl(struct pci_dev *pdev,
52916982af48d9 Logan Gunthorpe 2018-10-04 100 struct scatterlist *sgl)
52916982af48d9 Logan Gunthorpe 2018-10-04 101 {
52916982af48d9 Logan Gunthorpe 2018-10-04 102 }
52916982af48d9 Logan Gunthorpe 2018-10-04 103 static inline void pci_p2pmem_publish(struct pci_dev *pdev, bool publish)
52916982af48d9 Logan Gunthorpe 2018-10-04 104 {
52916982af48d9 Logan Gunthorpe 2018-10-04 105 }
892769aeb9761e Logan Gunthorpe 2021-03-17 106 static inline enum pci_p2pdma_map_type pci_p2pdma_map_type(
892769aeb9761e Logan Gunthorpe 2021-03-17 107 struct dev_pagemap *pgmap, struct device *dev)
892769aeb9761e Logan Gunthorpe 2021-03-17 108 {
892769aeb9761e Logan Gunthorpe 2021-03-17 109 return PCI_P2PDMA_MAP_NOT_SUPPORTED;
892769aeb9761e Logan Gunthorpe 2021-03-17 110 }
2b9f4bb2a4fb77 Logan Gunthorpe 2019-08-12 111 static inline int pci_p2pdma_map_sg_attrs(struct device *dev,
2b9f4bb2a4fb77 Logan Gunthorpe 2019-08-12 112 struct scatterlist *sg, int nents, enum dma_data_direction dir,
2b9f4bb2a4fb77 Logan Gunthorpe 2019-08-12 113 unsigned long attrs)
977196b8c5b20b Logan Gunthorpe 2018-10-04 114 {
977196b8c5b20b Logan Gunthorpe 2018-10-04 115 return 0;
977196b8c5b20b Logan Gunthorpe 2018-10-04 116 }
7f73eac3a7137e Logan Gunthorpe 2019-08-12 117 static inline void pci_p2pdma_unmap_sg_attrs(struct device *dev,
7f73eac3a7137e Logan Gunthorpe 2019-08-12 118 struct scatterlist *sg, int nents, enum dma_data_direction dir,
7f73eac3a7137e Logan Gunthorpe 2019-08-12 119 unsigned long attrs)
7f73eac3a7137e Logan Gunthorpe 2019-08-12 120 {
7f73eac3a7137e Logan Gunthorpe 2019-08-12 121 }
3b7b58fd026fb0 Logan Gunthorpe 2021-03-17 @122 static inline enum pci_p2pdma_map_type pci_p2pdma_map_segment(
3b7b58fd026fb0 Logan Gunthorpe 2021-03-17 123 struct pci_p2pdma_map_state *state, struct device *dev,
3b7b58fd026fb0 Logan Gunthorpe 2021-03-17 124 struct scatterlist *sg);
3b7b58fd026fb0 Logan Gunthorpe 2021-03-17 125 {
3b7b58fd026fb0 Logan Gunthorpe 2021-03-17 126 return PCI_P2PDMA_MAP_NOT_SUPPORTED;
3b7b58fd026fb0 Logan Gunthorpe 2021-03-17 127 }
3b7b58fd026fb0 Logan Gunthorpe 2021-03-17 128 static inline void pci_p2pdma_map_bus_segment(struct scatterlist *pg_sg,
3b7b58fd026fb0 Logan Gunthorpe 2021-03-17 129 struct scatterlist *dma_sg)
3b7b58fd026fb0 Logan Gunthorpe 2021-03-17 130 {
3b7b58fd026fb0 Logan Gunthorpe 2021-03-17 131 }
2d7bc010f450d8 Logan Gunthorpe 2018-10-04 132 static inline int pci_p2pdma_enable_store(const char *page,
2d7bc010f450d8 Logan Gunthorpe 2018-10-04 133 struct pci_dev **p2p_dev, bool *use_p2pdma)
2d7bc010f450d8 Logan Gunthorpe 2018-10-04 134 {
2d7bc010f450d8 Logan Gunthorpe 2018-10-04 135 *use_p2pdma = false;
2d7bc010f450d8 Logan Gunthorpe 2018-10-04 136 return 0;
2d7bc010f450d8 Logan Gunthorpe 2018-10-04 137 }
2d7bc010f450d8 Logan Gunthorpe 2018-10-04 138 static inline ssize_t pci_p2pdma_enable_show(char *page,
2d7bc010f450d8 Logan Gunthorpe 2018-10-04 139 struct pci_dev *p2p_dev, bool use_p2pdma)
2d7bc010f450d8 Logan Gunthorpe 2018-10-04 140 {
2d7bc010f450d8 Logan Gunthorpe 2018-10-04 141 return sprintf(page, "none\n");
2d7bc010f450d8 Logan Gunthorpe 2018-10-04 142 }
52916982af48d9 Logan Gunthorpe 2018-10-04 143 #endif /* CONFIG_PCI_P2PDMA */
52916982af48d9 Logan Gunthorpe 2018-10-04 144
52916982af48d9 Logan Gunthorpe 2018-10-04 145
:::::: The code at line 122 was first introduced by commit
:::::: 3b7b58fd026fb0b314c93fe506140dfd67dea103 PCI/P2PDMA: Introduce helpers for dma_map_sg implementations
:::::: TO: Logan Gunthorpe <logang@deltatee.com>
:::::: CC: Logan Gunthorpe <logang@deltatee.com>
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org
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2021-05-08 1:09 [p2pmem:p2pdma_map_ops_v2+user 14/27] include/linux/pci-p2pdma.h:122:40: warning: 'pci_p2pdma_map_segment' used but never defined kernel test robot
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