[powerpc:fixes-test 12/12] arch/powerpc/include/asm/ptrace.h:241:33: error: implicit declaration of function 'BIT'

[powerpc:fixes-test 12/12] arch/powerpc/include/asm/ptrace.h:241:33: error: implicit declaration of function 'BIT'

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git fixes-test
head:   afc2830892a128a13a65f677271a0a48aeb61b5e
commit: afc2830892a128a13a65f677271a0a48aeb61b5e [12/12] powerpc/syscall: Fix syscall skip handling for seccomp and ptrace
config: powerpc-allnoconfig (https://download.01.org/0day-ci/archive/20260711/202607110141.nUx3NKwu-lkp@intel.com/config)
compiler: powerpc-linux-gcc (GCC) 16.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260711/202607110141.nUx3NKwu-lkp@intel.com/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 <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202607110141.nUx3NKwu-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from arch/powerpc/include/asm/user.h:5,
                    from include/linux/user.h:1,
                    from include/linux/elfcore.h:5,
                    from include/linux/vmcore_info.h:6,
                    from include/linux/kexec.h:18,
                    from include/linux/crash_dump.h:5,
                    from drivers/of/fdt.c:11:
   arch/powerpc/include/asm/ptrace.h: In function 'set_syscall_entry_ret':
>> arch/powerpc/include/asm/ptrace.h:241:33: error: implicit declaration of function 'BIT' [-Wimplicit-function-declaration]
     241 | #define SYSCALL_ENTRY_RET_SET   BIT(0)
         |                                 ^~~
   arch/powerpc/include/asm/ptrace.h:245:30: note: in expansion of macro 'SYSCALL_ENTRY_RET_SET'
     245 |         regs->entry_flags |= SYSCALL_ENTRY_RET_SET;
         |                              ^~~~~~~~~~~~~~~~~~~~~


vim +/BIT +241 arch/powerpc/include/asm/ptrace.h

   228	
   229	#define force_successful_syscall_return()   \
   230		do { \
   231			set_thread_flag(TIF_NOERROR); \
   232		} while(0)
   233	
   234	#define current_pt_regs() \
   235		((struct pt_regs *)((unsigned long)task_stack_page(current) + THREAD_SIZE) - 1)
   236	
   237	/*
   238	 * SYSCALL_ENTRY_RET_SET: seccomp or ptrace called syscall_set_return_value()
   239	 * and wants the syscall skipped; regs->gpr[3] already holds the return value.
   240	 */
 > 241	#define SYSCALL_ENTRY_RET_SET	BIT(0)
   242	

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