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31 May 2023 05:14:17 -0700 Received: from kbuild by fb1ced2c09fb with local (Exim 4.96) (envelope-from ) id 1q4KiX-0001Ig-0E; Wed, 31 May 2023 12:14:17 +0000 Date: Wed, 31 May 2023 20:14:12 +0800 From: kernel test robot To: Ammar Faizi Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev, Ammar Faizi , GNU/Weeb Mailing List Subject: [ammarfaizi2-block:testing/af/home 3/8] kernel/workqueue.c:4421:5: warning: no previous prototype for function 'set_workqueue_cpumask' Message-ID: <202305312023.upvkP9at-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline List-Id: tree: https://github.com/ammarfaizi2/linux-block testing/af/home head: 51fb2efd62ae52dc061dbca301fb823357fb3f80 commit: 6436622d20b564a334e4bc0bc5019c82a592dd08 [3/8] workqueue: Add set_workqueue_cpumask() helper function config: hexagon-randconfig-r041-20230531 (https://download.01.org/0day-ci/archive/20230531/202305312023.upvkP9at-lkp@intel.com/config) compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project 4faf3aaf28226a4e950c103a14f6fc1d1fdabb1b) reproduce (this is a W=1 build): mkdir -p ~/bin wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://github.com/ammarfaizi2/linux-block/commit/6436622d20b564a334e4bc0bc5019c82a592dd08 git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block git fetch --no-tags ammarfaizi2-block testing/af/home git checkout 6436622d20b564a334e4bc0bc5019c82a592dd08 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang ~/bin/make.cross W=1 O=build_dir ARCH=hexagon olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang ~/bin/make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-kbuild-all/202305312023.upvkP9at-lkp@intel.com/ All warnings (new ones prefixed by >>): In file included from kernel/workqueue.c:39: In file included from include/linux/hardirq.h:11: In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/hexagon/include/asm/io.h:334: include/asm-generic/io.h:547:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __raw_readb(PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:560:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr)); ~~~~~~~~~~ ^ include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu' #define __le16_to_cpu(x) ((__force __u16)(__le16)(x)) ^ In file included from kernel/workqueue.c:39: In file included from include/linux/hardirq.h:11: In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/hexagon/include/asm/io.h:334: include/asm-generic/io.h:573:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr)); ~~~~~~~~~~ ^ include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu' #define __le32_to_cpu(x) ((__force __u32)(__le32)(x)) ^ In file included from kernel/workqueue.c:39: In file included from include/linux/hardirq.h:11: In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/hexagon/include/asm/io.h:334: include/asm-generic/io.h:584:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writeb(value, PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:594:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:604:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr); ~~~~~~~~~~ ^ >> kernel/workqueue.c:4421:5: warning: no previous prototype for function 'set_workqueue_cpumask' [-Wmissing-prototypes] int set_workqueue_cpumask(struct workqueue_struct *wq, const cpumask_var_t mask) ^ kernel/workqueue.c:4421:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int set_workqueue_cpumask(struct workqueue_struct *wq, const cpumask_var_t mask) ^ static 7 warnings generated. vim +/set_workqueue_cpumask +4421 kernel/workqueue.c 4420 > 4421 int set_workqueue_cpumask(struct workqueue_struct *wq, const cpumask_var_t mask) 4422 { 4423 struct workqueue_attrs *tmp_attrs; 4424 int ret; 4425 4426 tmp_attrs = alloc_workqueue_attrs(); 4427 if (!tmp_attrs) 4428 return -ENOMEM; 4429 4430 apply_wqattrs_lock(); 4431 copy_workqueue_attrs(tmp_attrs, wq->unbound_attrs); 4432 cpumask_copy(tmp_attrs->cpumask, mask); 4433 ret = apply_workqueue_attrs_locked(wq, tmp_attrs); 4434 apply_wqattrs_unlock(); 4435 free_workqueue_attrs(tmp_attrs); 4436 return ret; 4437 } 4438 EXPORT_SYMBOL_GPL(set_workqueue_cpumask); 4439 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki