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* [bpf-next:master 972/996] include/linux/bpf.h:1152:71: warning: unused parameter 'new_ctx'
@ 2021-08-17 13:43 kernel test robot
  0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2021-08-17 13:43 UTC (permalink / raw)
  To: Andrii Nakryiko
  Cc: clang-built-linux, kbuild-all, linux-kernel, Daniel Borkmann

[-- Attachment #1: Type: text/plain, Size: 36904 bytes --]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master
head:   3c3bd542ffbb2ac09631313ede46ae66660ae550
commit: 7d08c2c9117113fee118487425ed55efa50cbfa9 [972/996] bpf: Refactor BPF_PROG_RUN_ARRAY family of macros into functions
config: i386-randconfig-r021-20210816 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 2c6448cdc2f68f8c28fd0bd9404182b81306e6e6)
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://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git/commit/?id=7d08c2c9117113fee118487425ed55efa50cbfa9
        git remote add bpf-next https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git
        git fetch --no-tags bpf-next master
        git checkout 7d08c2c9117113fee118487425ed55efa50cbfa9
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=i386 

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 >>):

   include/linux/u64_stats_sync.h:154:19: warning: unused parameter 'flags' [-Wunused-parameter]
                                   unsigned long flags)
                                                 ^
   include/linux/u64_stats_sync.h:162:81: warning: unused parameter 'syncp' [-Wunused-parameter]
   static inline unsigned int __u64_stats_fetch_begin(const struct u64_stats_sync *syncp)
                                                                                   ^
   include/linux/u64_stats_sync.h:179:73: warning: unused parameter 'syncp' [-Wunused-parameter]
   static inline bool __u64_stats_fetch_retry(const struct u64_stats_sync *syncp,
                                                                           ^
   include/linux/u64_stats_sync.h:180:20: warning: unused parameter 'start' [-Wunused-parameter]
                                            unsigned int start)
                                                         ^
   In file included from drivers/gpu/drm/i915/i915_drv.c:39:
   In file included from include/linux/vga_switcheroo.h:34:
   In file included from include/linux/fb.h:6:
   In file included from include/uapi/linux/fb.h:6:
   In file included from include/linux/i2c.h:18:
   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:
   In file included from include/linux/memcontrol.h:13:
   In file included from include/linux/cgroup.h:28:
   In file included from include/linux/cgroup-defs.h:22:
   In file included from include/linux/bpf-cgroup.h:5:
   In file included from include/linux/bpf.h:22:
   include/linux/sched/mm.h:103:59: warning: unused parameter 'mm' [-Wunused-parameter]
   static inline void mm_update_next_owner(struct mm_struct *mm)
                                                             ^
   include/linux/sched/mm.h:321:37: warning: unused parameter 'memcg' [-Wunused-parameter]
   set_active_memcg(struct mem_cgroup *memcg)
                                       ^
   In file included from drivers/gpu/drm/i915/i915_drv.c:39:
   In file included from include/linux/vga_switcheroo.h:34:
   In file included from include/linux/fb.h:6:
   In file included from include/uapi/linux/fb.h:6:
   In file included from include/linux/i2c.h:18:
   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:
   In file included from include/linux/memcontrol.h:13:
   In file included from include/linux/cgroup.h:28:
   In file included from include/linux/cgroup-defs.h:22:
   In file included from include/linux/bpf-cgroup.h:5:
   include/linux/bpf.h:770:61: warning: unused parameter 'prog' [-Wunused-parameter]
   static inline int bpf_trampoline_link_prog(struct bpf_prog *prog,
                                                               ^
   include/linux/bpf.h:771:32: warning: unused parameter 'tr' [-Wunused-parameter]
                                              struct bpf_trampoline *tr)
                                                                     ^
   include/linux/bpf.h:775:63: warning: unused parameter 'prog' [-Wunused-parameter]
   static inline int bpf_trampoline_unlink_prog(struct bpf_prog *prog,
                                                                 ^
   include/linux/bpf.h:776:34: warning: unused parameter 'tr' [-Wunused-parameter]
                                                struct bpf_trampoline *tr)
                                                                       ^
   include/linux/bpf.h:780:61: warning: unused parameter 'key' [-Wunused-parameter]
   static inline struct bpf_trampoline *bpf_trampoline_get(u64 key,
                                                               ^
   include/linux/bpf.h:781:39: warning: unused parameter 'tgt_info' [-Wunused-parameter]
                                                           struct bpf_attach_target_info *tgt_info)
                                                                                          ^
   include/linux/bpf.h:785:62: warning: unused parameter 'tr' [-Wunused-parameter]
   static inline void bpf_trampoline_put(struct bpf_trampoline *tr) {}
                                                                ^
   include/linux/bpf.h:790:70: warning: unused parameter 'd' [-Wunused-parameter]
   static inline void bpf_dispatcher_change_prog(struct bpf_dispatcher *d,
                                                                        ^
   include/linux/bpf.h:791:29: warning: unused parameter 'from' [-Wunused-parameter]
                                                 struct bpf_prog *from,
                                                                  ^
   include/linux/bpf.h:792:29: warning: unused parameter 'to' [-Wunused-parameter]
                                                 struct bpf_prog *to) {}
                                                                  ^
   include/linux/bpf.h:793:55: warning: unused parameter 'address' [-Wunused-parameter]
   static inline bool is_bpf_image_address(unsigned long address)
                                                         ^
   include/linux/bpf.h:1012:68: warning: unused parameter 'type_id' [-Wunused-parameter]
   static inline const struct bpf_struct_ops *bpf_struct_ops_find(u32 type_id)
                                                                      ^
   include/linux/bpf.h:1016:52: warning: unused parameter 'btf' [-Wunused-parameter]
   static inline void bpf_struct_ops_init(struct btf *btf,
                                                      ^
   include/linux/bpf.h:1017:37: warning: unused parameter 'log' [-Wunused-parameter]
                                          struct bpf_verifier_log *log)
                                                                   ^
   include/linux/bpf.h:1020:51: warning: unused parameter 'data' [-Wunused-parameter]
   static inline bool bpf_try_module_get(const void *data, struct module *owner)
                                                     ^
   include/linux/bpf.h:1024:47: warning: unused parameter 'data' [-Wunused-parameter]
   static inline void bpf_module_put(const void *data, struct module *owner)
                                                 ^
   include/linux/bpf.h:1028:70: warning: unused parameter 'map' [-Wunused-parameter]
   static inline int bpf_struct_ops_map_sys_lookup_elem(struct bpf_map *map,
                                                                        ^
   include/linux/bpf.h:1029:18: warning: unused parameter 'key' [-Wunused-parameter]
                                                        void *key,
                                                              ^
   include/linux/bpf.h:1030:18: warning: unused parameter 'value' [-Wunused-parameter]
                                                        void *value)
                                                              ^
>> include/linux/bpf.h:1152:71: warning: unused parameter 'new_ctx' [-Wunused-parameter]
   static inline struct bpf_run_ctx *bpf_set_run_ctx(struct bpf_run_ctx *new_ctx)
                                                                         ^
>> include/linux/bpf.h:1163:58: warning: unused parameter 'old_ctx' [-Wunused-parameter]
   static inline void bpf_reset_run_ctx(struct bpf_run_ctx *old_ctx)
                                                            ^
   include/linux/bpf.h:1663:49: warning: unused parameter 'ufd' [-Wunused-parameter]
   static inline struct bpf_prog *bpf_prog_get(u32 ufd)
                                                   ^
   include/linux/bpf.h:1668:58: warning: unused parameter 'ufd' [-Wunused-parameter]
   static inline struct bpf_prog *bpf_prog_get_type_dev(u32 ufd,
                                                            ^
   include/linux/bpf.h:1669:31: warning: unused parameter 'type' [-Wunused-parameter]
                                                        enum bpf_prog_type type,
                                                                           ^
   include/linux/bpf.h:1670:17: warning: unused parameter 'attach_drv' [-Wunused-parameter]
                                                        bool attach_drv)
                                                             ^
   include/linux/bpf.h:1675:50: warning: unused parameter 'prog' [-Wunused-parameter]
   static inline void bpf_prog_add(struct bpf_prog *prog, int i)
                                                    ^
   include/linux/bpf.h:1675:60: warning: unused parameter 'i' [-Wunused-parameter]
   static inline void bpf_prog_add(struct bpf_prog *prog, int i)
                                                              ^
   include/linux/bpf.h:1679:50: warning: unused parameter 'prog' [-Wunused-parameter]
   static inline void bpf_prog_sub(struct bpf_prog *prog, int i)
                                                    ^
   include/linux/bpf.h:1679:60: warning: unused parameter 'i' [-Wunused-parameter]
   static inline void bpf_prog_sub(struct bpf_prog *prog, int i)
                                                              ^
   include/linux/bpf.h:1683:50: warning: unused parameter 'prog' [-Wunused-parameter]
   static inline void bpf_prog_put(struct bpf_prog *prog)
                                                    ^
   include/linux/bpf.h:1687:50: warning: unused parameter 'prog' [-Wunused-parameter]
   static inline void bpf_prog_inc(struct bpf_prog *prog)
                                                    ^
   include/linux/bpf.h:1692:40: warning: unused parameter 'prog' [-Wunused-parameter]
   bpf_prog_inc_not_zero(struct bpf_prog *prog)
                                          ^
   include/linux/bpf.h:1697:51: warning: unused parameter 'link' [-Wunused-parameter]
   static inline void bpf_link_init(struct bpf_link *link, enum bpf_link_type type,
                                                     ^
   include/linux/bpf.h:1697:76: warning: unused parameter 'type' [-Wunused-parameter]
   static inline void bpf_link_init(struct bpf_link *link, enum bpf_link_type type,
                                                                              ^
   include/linux/bpf.h:1698:33: warning: unused parameter 'ops' [-Wunused-parameter]
                                    const struct bpf_link_ops *ops,
                                                               ^
   include/linux/bpf.h:1699:23: warning: unused parameter 'prog' [-Wunused-parameter]
                                    struct bpf_prog *prog)
                                                     ^
   include/linux/bpf.h:1703:51: warning: unused parameter 'link' [-Wunused-parameter]
   static inline int bpf_link_prime(struct bpf_link *link,
                                                     ^
   include/linux/bpf.h:1704:30: warning: unused parameter 'primer' [-Wunused-parameter]
                                    struct bpf_link_primer *primer)
                                                            ^
   include/linux/bpf.h:1709:59: warning: unused parameter 'primer' [-Wunused-parameter]
   static inline int bpf_link_settle(struct bpf_link_primer *primer)
                                                             ^
   include/linux/bpf.h:1714:61: warning: unused parameter 'primer' [-Wunused-parameter]
   static inline void bpf_link_cleanup(struct bpf_link_primer *primer)
                                                               ^
   include/linux/bpf.h:1718:50: warning: unused parameter 'link' [-Wunused-parameter]
   static inline void bpf_link_inc(struct bpf_link *link)
                                                    ^
   include/linux/bpf.h:1722:50: warning: unused parameter 'link' [-Wunused-parameter]
   static inline void bpf_link_put(struct bpf_link *link)
                                                    ^
   include/linux/bpf.h:1726:55: warning: unused parameter 'pathname' [-Wunused-parameter]
   static inline int bpf_obj_get_user(const char __user *pathname, int flags)
                                                         ^
   include/linux/bpf.h:1726:69: warning: unused parameter 'flags' [-Wunused-parameter]
   static inline int bpf_obj_get_user(const char __user *pathname, int flags)
                                                                       ^
   include/linux/bpf.h:1731:58: warning: unused parameter 'map' [-Wunused-parameter]
   static inline bool dev_map_can_have_prog(struct bpf_map *map)
                                                            ^
   include/linux/bpf.h:1745:40: warning: unused parameter 'dev' [-Wunused-parameter]
   int dev_xdp_enqueue(struct net_device *dev, struct xdp_buff *xdp,
                                          ^
   include/linux/bpf.h:1745:62: warning: unused parameter 'xdp' [-Wunused-parameter]
   int dev_xdp_enqueue(struct net_device *dev, struct xdp_buff *xdp,
                                                                ^
   include/linux/bpf.h:1746:26: warning: unused parameter 'dev_rx' [-Wunused-parameter]
                       struct net_device *dev_rx)
                                          ^
   include/linux/bpf.h:1752:45: warning: unused parameter 'dst' [-Wunused-parameter]
   int dev_map_enqueue(struct bpf_dtab_netdev *dst, struct xdp_buff *xdp,
                                               ^
   include/linux/bpf.h:1752:67: warning: unused parameter 'xdp' [-Wunused-parameter]
   int dev_map_enqueue(struct bpf_dtab_netdev *dst, struct xdp_buff *xdp,
                                                                     ^
   include/linux/bpf.h:1753:26: warning: unused parameter 'dev_rx' [-Wunused-parameter]
                       struct net_device *dev_rx)
                                          ^
   include/linux/bpf.h:1759:44: warning: unused parameter 'xdp' [-Wunused-parameter]
   int dev_map_enqueue_multi(struct xdp_buff *xdp, struct net_device *dev_rx,
                                              ^
   include/linux/bpf.h:1759:68: warning: unused parameter 'dev_rx' [-Wunused-parameter]
   int dev_map_enqueue_multi(struct xdp_buff *xdp, struct net_device *dev_rx,
                                                                      ^
   include/linux/bpf.h:1760:22: warning: unused parameter 'map' [-Wunused-parameter]
                             struct bpf_map *map, bool exclude_ingress)
--
                                                         ^
   include/linux/u64_stats_sync.h:153:56: warning: unused parameter 'syncp' [-Wunused-parameter]
   u64_stats_update_end_irqrestore(struct u64_stats_sync *syncp,
                                                          ^
   include/linux/u64_stats_sync.h:154:19: warning: unused parameter 'flags' [-Wunused-parameter]
                                   unsigned long flags)
                                                 ^
   include/linux/u64_stats_sync.h:162:81: warning: unused parameter 'syncp' [-Wunused-parameter]
   static inline unsigned int __u64_stats_fetch_begin(const struct u64_stats_sync *syncp)
                                                                                   ^
   include/linux/u64_stats_sync.h:179:73: warning: unused parameter 'syncp' [-Wunused-parameter]
   static inline bool __u64_stats_fetch_retry(const struct u64_stats_sync *syncp,
                                                                           ^
   include/linux/u64_stats_sync.h:180:20: warning: unused parameter 'start' [-Wunused-parameter]
                                            unsigned int start)
                                                         ^
   In file included from drivers/gpu/drm/i915/i915_config.c:6:
   In file included from drivers/gpu/drm/i915/i915_drv.h:39:
   In file included from include/linux/i2c.h:18:
   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:
   In file included from include/linux/memcontrol.h:13:
   In file included from include/linux/cgroup.h:28:
   In file included from include/linux/cgroup-defs.h:22:
   In file included from include/linux/bpf-cgroup.h:5:
   In file included from include/linux/bpf.h:22:
   include/linux/sched/mm.h:103:59: warning: unused parameter 'mm' [-Wunused-parameter]
   static inline void mm_update_next_owner(struct mm_struct *mm)
                                                             ^
   include/linux/sched/mm.h:321:37: warning: unused parameter 'memcg' [-Wunused-parameter]
   set_active_memcg(struct mem_cgroup *memcg)
                                       ^
   In file included from drivers/gpu/drm/i915/i915_config.c:6:
   In file included from drivers/gpu/drm/i915/i915_drv.h:39:
   In file included from include/linux/i2c.h:18:
   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:
   In file included from include/linux/memcontrol.h:13:
   In file included from include/linux/cgroup.h:28:
   In file included from include/linux/cgroup-defs.h:22:
   In file included from include/linux/bpf-cgroup.h:5:
   include/linux/bpf.h:770:61: warning: unused parameter 'prog' [-Wunused-parameter]
   static inline int bpf_trampoline_link_prog(struct bpf_prog *prog,
                                                               ^
   include/linux/bpf.h:771:32: warning: unused parameter 'tr' [-Wunused-parameter]
                                              struct bpf_trampoline *tr)
                                                                     ^
   include/linux/bpf.h:775:63: warning: unused parameter 'prog' [-Wunused-parameter]
   static inline int bpf_trampoline_unlink_prog(struct bpf_prog *prog,
                                                                 ^
   include/linux/bpf.h:776:34: warning: unused parameter 'tr' [-Wunused-parameter]
                                                struct bpf_trampoline *tr)
                                                                       ^
   include/linux/bpf.h:780:61: warning: unused parameter 'key' [-Wunused-parameter]
   static inline struct bpf_trampoline *bpf_trampoline_get(u64 key,
                                                               ^
   include/linux/bpf.h:781:39: warning: unused parameter 'tgt_info' [-Wunused-parameter]
                                                           struct bpf_attach_target_info *tgt_info)
                                                                                          ^
   include/linux/bpf.h:785:62: warning: unused parameter 'tr' [-Wunused-parameter]
   static inline void bpf_trampoline_put(struct bpf_trampoline *tr) {}
                                                                ^
   include/linux/bpf.h:790:70: warning: unused parameter 'd' [-Wunused-parameter]
   static inline void bpf_dispatcher_change_prog(struct bpf_dispatcher *d,
                                                                        ^
   include/linux/bpf.h:791:29: warning: unused parameter 'from' [-Wunused-parameter]
                                                 struct bpf_prog *from,
                                                                  ^
   include/linux/bpf.h:792:29: warning: unused parameter 'to' [-Wunused-parameter]
                                                 struct bpf_prog *to) {}
                                                                  ^
   include/linux/bpf.h:793:55: warning: unused parameter 'address' [-Wunused-parameter]
   static inline bool is_bpf_image_address(unsigned long address)
                                                         ^
   include/linux/bpf.h:1012:68: warning: unused parameter 'type_id' [-Wunused-parameter]
   static inline const struct bpf_struct_ops *bpf_struct_ops_find(u32 type_id)
                                                                      ^
   include/linux/bpf.h:1016:52: warning: unused parameter 'btf' [-Wunused-parameter]
   static inline void bpf_struct_ops_init(struct btf *btf,
                                                      ^
   include/linux/bpf.h:1017:37: warning: unused parameter 'log' [-Wunused-parameter]
                                          struct bpf_verifier_log *log)
                                                                   ^
   include/linux/bpf.h:1020:51: warning: unused parameter 'data' [-Wunused-parameter]
   static inline bool bpf_try_module_get(const void *data, struct module *owner)
                                                     ^
   include/linux/bpf.h:1024:47: warning: unused parameter 'data' [-Wunused-parameter]
   static inline void bpf_module_put(const void *data, struct module *owner)
                                                 ^
   include/linux/bpf.h:1028:70: warning: unused parameter 'map' [-Wunused-parameter]
   static inline int bpf_struct_ops_map_sys_lookup_elem(struct bpf_map *map,
                                                                        ^
   include/linux/bpf.h:1029:18: warning: unused parameter 'key' [-Wunused-parameter]
                                                        void *key,
                                                              ^
   include/linux/bpf.h:1030:18: warning: unused parameter 'value' [-Wunused-parameter]
                                                        void *value)
                                                              ^
>> include/linux/bpf.h:1152:71: warning: unused parameter 'new_ctx' [-Wunused-parameter]
   static inline struct bpf_run_ctx *bpf_set_run_ctx(struct bpf_run_ctx *new_ctx)
                                                                         ^
>> include/linux/bpf.h:1163:58: warning: unused parameter 'old_ctx' [-Wunused-parameter]
   static inline void bpf_reset_run_ctx(struct bpf_run_ctx *old_ctx)
                                                            ^
   include/linux/bpf.h:1663:49: warning: unused parameter 'ufd' [-Wunused-parameter]
   static inline struct bpf_prog *bpf_prog_get(u32 ufd)
                                                   ^
   include/linux/bpf.h:1668:58: warning: unused parameter 'ufd' [-Wunused-parameter]
   static inline struct bpf_prog *bpf_prog_get_type_dev(u32 ufd,
                                                            ^
   include/linux/bpf.h:1669:31: warning: unused parameter 'type' [-Wunused-parameter]
                                                        enum bpf_prog_type type,
                                                                           ^
   include/linux/bpf.h:1670:17: warning: unused parameter 'attach_drv' [-Wunused-parameter]
                                                        bool attach_drv)
                                                             ^
   include/linux/bpf.h:1675:50: warning: unused parameter 'prog' [-Wunused-parameter]
   static inline void bpf_prog_add(struct bpf_prog *prog, int i)
                                                    ^
   include/linux/bpf.h:1675:60: warning: unused parameter 'i' [-Wunused-parameter]
   static inline void bpf_prog_add(struct bpf_prog *prog, int i)
                                                              ^
   include/linux/bpf.h:1679:50: warning: unused parameter 'prog' [-Wunused-parameter]
   static inline void bpf_prog_sub(struct bpf_prog *prog, int i)
                                                    ^
   include/linux/bpf.h:1679:60: warning: unused parameter 'i' [-Wunused-parameter]
   static inline void bpf_prog_sub(struct bpf_prog *prog, int i)
                                                              ^
   include/linux/bpf.h:1683:50: warning: unused parameter 'prog' [-Wunused-parameter]
   static inline void bpf_prog_put(struct bpf_prog *prog)
                                                    ^
   include/linux/bpf.h:1687:50: warning: unused parameter 'prog' [-Wunused-parameter]
   static inline void bpf_prog_inc(struct bpf_prog *prog)
                                                    ^
   include/linux/bpf.h:1692:40: warning: unused parameter 'prog' [-Wunused-parameter]
   bpf_prog_inc_not_zero(struct bpf_prog *prog)
                                          ^
   include/linux/bpf.h:1697:51: warning: unused parameter 'link' [-Wunused-parameter]
   static inline void bpf_link_init(struct bpf_link *link, enum bpf_link_type type,
                                                     ^
   include/linux/bpf.h:1697:76: warning: unused parameter 'type' [-Wunused-parameter]
   static inline void bpf_link_init(struct bpf_link *link, enum bpf_link_type type,
                                                                              ^
   include/linux/bpf.h:1698:33: warning: unused parameter 'ops' [-Wunused-parameter]
                                    const struct bpf_link_ops *ops,
                                                               ^
   include/linux/bpf.h:1699:23: warning: unused parameter 'prog' [-Wunused-parameter]
                                    struct bpf_prog *prog)
                                                     ^
   include/linux/bpf.h:1703:51: warning: unused parameter 'link' [-Wunused-parameter]
   static inline int bpf_link_prime(struct bpf_link *link,
                                                     ^
   include/linux/bpf.h:1704:30: warning: unused parameter 'primer' [-Wunused-parameter]
                                    struct bpf_link_primer *primer)
                                                            ^
   include/linux/bpf.h:1709:59: warning: unused parameter 'primer' [-Wunused-parameter]
   static inline int bpf_link_settle(struct bpf_link_primer *primer)
                                                             ^
   include/linux/bpf.h:1714:61: warning: unused parameter 'primer' [-Wunused-parameter]
   static inline void bpf_link_cleanup(struct bpf_link_primer *primer)
                                                               ^
   include/linux/bpf.h:1718:50: warning: unused parameter 'link' [-Wunused-parameter]
   static inline void bpf_link_inc(struct bpf_link *link)
                                                    ^
   include/linux/bpf.h:1722:50: warning: unused parameter 'link' [-Wunused-parameter]
   static inline void bpf_link_put(struct bpf_link *link)
                                                    ^
   include/linux/bpf.h:1726:55: warning: unused parameter 'pathname' [-Wunused-parameter]
   static inline int bpf_obj_get_user(const char __user *pathname, int flags)
                                                         ^
   include/linux/bpf.h:1726:69: warning: unused parameter 'flags' [-Wunused-parameter]
   static inline int bpf_obj_get_user(const char __user *pathname, int flags)
                                                                       ^
   include/linux/bpf.h:1731:58: warning: unused parameter 'map' [-Wunused-parameter]
   static inline bool dev_map_can_have_prog(struct bpf_map *map)
                                                            ^
   include/linux/bpf.h:1745:40: warning: unused parameter 'dev' [-Wunused-parameter]
   int dev_xdp_enqueue(struct net_device *dev, struct xdp_buff *xdp,
                                          ^
   include/linux/bpf.h:1745:62: warning: unused parameter 'xdp' [-Wunused-parameter]
   int dev_xdp_enqueue(struct net_device *dev, struct xdp_buff *xdp,
                                                                ^
   include/linux/bpf.h:1746:26: warning: unused parameter 'dev_rx' [-Wunused-parameter]
                       struct net_device *dev_rx)
                                          ^
   include/linux/bpf.h:1752:45: warning: unused parameter 'dst' [-Wunused-parameter]
   int dev_map_enqueue(struct bpf_dtab_netdev *dst, struct xdp_buff *xdp,
                                               ^
   include/linux/bpf.h:1752:67: warning: unused parameter 'xdp' [-Wunused-parameter]
   int dev_map_enqueue(struct bpf_dtab_netdev *dst, struct xdp_buff *xdp,
                                                                     ^
   include/linux/bpf.h:1753:26: warning: unused parameter 'dev_rx' [-Wunused-parameter]
                       struct net_device *dev_rx)
                                          ^
   include/linux/bpf.h:1759:44: warning: unused parameter 'xdp' [-Wunused-parameter]
   int dev_map_enqueue_multi(struct xdp_buff *xdp, struct net_device *dev_rx,
                                              ^
   include/linux/bpf.h:1759:68: warning: unused parameter 'dev_rx' [-Wunused-parameter]
   int dev_map_enqueue_multi(struct xdp_buff *xdp, struct net_device *dev_rx,
                                                                      ^
   include/linux/bpf.h:1760:22: warning: unused parameter 'map' [-Wunused-parameter]
                             struct bpf_map *map, bool exclude_ingress)
..


vim +/new_ctx +1152 include/linux/bpf.h

   988	
   989	#if defined(CONFIG_BPF_JIT) && defined(CONFIG_BPF_SYSCALL)
   990	#define BPF_MODULE_OWNER ((void *)((0xeB9FUL << 2) + POISON_POINTER_DELTA))
   991	const struct bpf_struct_ops *bpf_struct_ops_find(u32 type_id);
   992	void bpf_struct_ops_init(struct btf *btf, struct bpf_verifier_log *log);
   993	bool bpf_struct_ops_get(const void *kdata);
   994	void bpf_struct_ops_put(const void *kdata);
   995	int bpf_struct_ops_map_sys_lookup_elem(struct bpf_map *map, void *key,
   996					       void *value);
   997	static inline bool bpf_try_module_get(const void *data, struct module *owner)
   998	{
   999		if (owner == BPF_MODULE_OWNER)
  1000			return bpf_struct_ops_get(data);
  1001		else
  1002			return try_module_get(owner);
  1003	}
  1004	static inline void bpf_module_put(const void *data, struct module *owner)
  1005	{
  1006		if (owner == BPF_MODULE_OWNER)
  1007			bpf_struct_ops_put(data);
  1008		else
  1009			module_put(owner);
  1010	}
  1011	#else
  1012	static inline const struct bpf_struct_ops *bpf_struct_ops_find(u32 type_id)
  1013	{
  1014		return NULL;
  1015	}
  1016	static inline void bpf_struct_ops_init(struct btf *btf,
  1017					       struct bpf_verifier_log *log)
  1018	{
  1019	}
  1020	static inline bool bpf_try_module_get(const void *data, struct module *owner)
  1021	{
  1022		return try_module_get(owner);
  1023	}
  1024	static inline void bpf_module_put(const void *data, struct module *owner)
  1025	{
  1026		module_put(owner);
  1027	}
> 1028	static inline int bpf_struct_ops_map_sys_lookup_elem(struct bpf_map *map,
> 1029							     void *key,
  1030							     void *value)
  1031	{
  1032		return -EINVAL;
  1033	}
  1034	#endif
  1035	
  1036	struct bpf_array {
  1037		struct bpf_map map;
  1038		u32 elem_size;
  1039		u32 index_mask;
  1040		struct bpf_array_aux *aux;
  1041		union {
  1042			char value[0] __aligned(8);
  1043			void *ptrs[0] __aligned(8);
  1044			void __percpu *pptrs[0] __aligned(8);
  1045		};
  1046	};
  1047	
  1048	#define BPF_COMPLEXITY_LIMIT_INSNS      1000000 /* yes. 1M insns */
  1049	#define MAX_TAIL_CALL_CNT 32
  1050	
  1051	#define BPF_F_ACCESS_MASK	(BPF_F_RDONLY |		\
  1052					 BPF_F_RDONLY_PROG |	\
  1053					 BPF_F_WRONLY |		\
  1054					 BPF_F_WRONLY_PROG)
  1055	
  1056	#define BPF_MAP_CAN_READ	BIT(0)
  1057	#define BPF_MAP_CAN_WRITE	BIT(1)
  1058	
  1059	static inline u32 bpf_map_flags_to_cap(struct bpf_map *map)
  1060	{
  1061		u32 access_flags = map->map_flags & (BPF_F_RDONLY_PROG | BPF_F_WRONLY_PROG);
  1062	
  1063		/* Combination of BPF_F_RDONLY_PROG | BPF_F_WRONLY_PROG is
  1064		 * not possible.
  1065		 */
  1066		if (access_flags & BPF_F_RDONLY_PROG)
  1067			return BPF_MAP_CAN_READ;
  1068		else if (access_flags & BPF_F_WRONLY_PROG)
  1069			return BPF_MAP_CAN_WRITE;
  1070		else
  1071			return BPF_MAP_CAN_READ | BPF_MAP_CAN_WRITE;
  1072	}
  1073	
  1074	static inline bool bpf_map_flags_access_ok(u32 access_flags)
  1075	{
  1076		return (access_flags & (BPF_F_RDONLY_PROG | BPF_F_WRONLY_PROG)) !=
  1077		       (BPF_F_RDONLY_PROG | BPF_F_WRONLY_PROG);
  1078	}
  1079	
  1080	struct bpf_event_entry {
  1081		struct perf_event *event;
  1082		struct file *perf_file;
  1083		struct file *map_file;
  1084		struct rcu_head rcu;
  1085	};
  1086	
  1087	bool bpf_prog_array_compatible(struct bpf_array *array, const struct bpf_prog *fp);
  1088	int bpf_prog_calc_tag(struct bpf_prog *fp);
  1089	
  1090	const struct bpf_func_proto *bpf_get_trace_printk_proto(void);
  1091	
  1092	typedef unsigned long (*bpf_ctx_copy_t)(void *dst, const void *src,
  1093						unsigned long off, unsigned long len);
  1094	typedef u32 (*bpf_convert_ctx_access_t)(enum bpf_access_type type,
  1095						const struct bpf_insn *src,
  1096						struct bpf_insn *dst,
  1097						struct bpf_prog *prog,
  1098						u32 *target_size);
  1099	
  1100	u64 bpf_event_output(struct bpf_map *map, u64 flags, void *meta, u64 meta_size,
  1101			     void *ctx, u64 ctx_size, bpf_ctx_copy_t ctx_copy);
  1102	
  1103	/* an array of programs to be executed under rcu_lock.
  1104	 *
  1105	 * Typical usage:
  1106	 * ret = BPF_PROG_RUN_ARRAY(&bpf_prog_array, ctx, bpf_prog_run);
  1107	 *
  1108	 * the structure returned by bpf_prog_array_alloc() should be populated
  1109	 * with program pointers and the last pointer must be NULL.
  1110	 * The user has to keep refcnt on the program and make sure the program
  1111	 * is removed from the array before bpf_prog_put().
  1112	 * The 'struct bpf_prog_array *' should only be replaced with xchg()
  1113	 * since other cpus are walking the array of pointers in parallel.
  1114	 */
  1115	struct bpf_prog_array_item {
  1116		struct bpf_prog *prog;
  1117		struct bpf_cgroup_storage *cgroup_storage[MAX_BPF_CGROUP_STORAGE_TYPE];
  1118	};
  1119	
  1120	struct bpf_prog_array {
  1121		struct rcu_head rcu;
  1122		struct bpf_prog_array_item items[];
  1123	};
  1124	
  1125	struct bpf_prog_array *bpf_prog_array_alloc(u32 prog_cnt, gfp_t flags);
  1126	void bpf_prog_array_free(struct bpf_prog_array *progs);
  1127	int bpf_prog_array_length(struct bpf_prog_array *progs);
  1128	bool bpf_prog_array_is_empty(struct bpf_prog_array *array);
  1129	int bpf_prog_array_copy_to_user(struct bpf_prog_array *progs,
  1130					__u32 __user *prog_ids, u32 cnt);
  1131	
  1132	void bpf_prog_array_delete_safe(struct bpf_prog_array *progs,
  1133					struct bpf_prog *old_prog);
  1134	int bpf_prog_array_delete_safe_at(struct bpf_prog_array *array, int index);
  1135	int bpf_prog_array_update_at(struct bpf_prog_array *array, int index,
  1136				     struct bpf_prog *prog);
  1137	int bpf_prog_array_copy_info(struct bpf_prog_array *array,
  1138				     u32 *prog_ids, u32 request_cnt,
  1139				     u32 *prog_cnt);
  1140	int bpf_prog_array_copy(struct bpf_prog_array *old_array,
  1141				struct bpf_prog *exclude_prog,
  1142				struct bpf_prog *include_prog,
  1143				struct bpf_prog_array **new_array);
  1144	
  1145	struct bpf_run_ctx {};
  1146	
  1147	struct bpf_cg_run_ctx {
  1148		struct bpf_run_ctx run_ctx;
  1149		const struct bpf_prog_array_item *prog_item;
  1150	};
  1151	
> 1152	static inline struct bpf_run_ctx *bpf_set_run_ctx(struct bpf_run_ctx *new_ctx)
  1153	{
  1154		struct bpf_run_ctx *old_ctx = NULL;
  1155	
  1156	#ifdef CONFIG_BPF_SYSCALL
  1157		old_ctx = current->bpf_ctx;
  1158		current->bpf_ctx = new_ctx;
  1159	#endif
  1160		return old_ctx;
  1161	}
  1162	
> 1163	static inline void bpf_reset_run_ctx(struct bpf_run_ctx *old_ctx)
  1164	{
  1165	#ifdef CONFIG_BPF_SYSCALL
  1166		current->bpf_ctx = old_ctx;
  1167	#endif
  1168	}
  1169	

---
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https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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