Hi Jiri, kernel test robot noticed the following build warnings:
[auto build test WARNING on bpf-next/master] url: https://github.com/intel-lab-lkp/linux/commits/Jiri-Olsa/ftrace-Add-ftrace_hash_count-function/20260326-101836 base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master patch link: https://lore.kernel.org/r/20260324081846.2334094-10-jolsa%40kernel.org patch subject: [PATCHv4 bpf-next 09/25] bpf: Add bpf_trampoline_multi_attach/detach functions config: x86_64-randconfig-015-20260327 (https://download.01.org/0day-ci/archive/20260327/[email protected]/config) compiler: gcc-14 (Debian 14.2.0-19) 14.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260327/[email protected]/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <[email protected]> | Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/ All warnings (new ones prefixed by >>): >> kernel/bpf/trampoline.c:100:13: warning: 'trampoline_unlock_all' defined but >> not used [-Wunused-function] 100 | static void trampoline_unlock_all(void) | ^~~~~~~~~~~~~~~~~~~~~ >> kernel/bpf/trampoline.c:92:13: warning: 'trampoline_lock_all' defined but >> not used [-Wunused-function] 92 | static void trampoline_lock_all(void) | ^~~~~~~~~~~~~~~~~~~ vim +/trampoline_unlock_all +100 kernel/bpf/trampoline.c 91 > 92 static void trampoline_lock_all(void) 93 { 94 int i; 95 96 for (i = 0; i < TRAMPOLINE_LOCKS_TABLE_SIZE; i++) 97 mutex_lock(&trampoline_locks[i].mutex); 98 } 99 > 100 static void trampoline_unlock_all(void) 101 { 102 int i; 103 104 for (i = 0; i < TRAMPOLINE_LOCKS_TABLE_SIZE; i++) 105 mutex_unlock(&trampoline_locks[i].mutex); 106 } 107 #else 108 static struct bpf_trampoline *direct_ops_ip_lookup(struct ftrace_ops *ops, unsigned long ip) 109 { 110 return ops->private; 111 } 112 #endif /* CONFIG_HAVE_SINGLE_FTRACE_DIRECT_OPS */ 113 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
