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* [mark-rutland:arm64/entry-deasm-new 18/25] arch/arm64/kernel/entry-common.c:34:17: warning: no previous prototype for 'do_notify_resume'
@ 2020-08-06 20:59 kernel test robot
  0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2020-08-06 20:59 UTC (permalink / raw)
  To: kbuild-all

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/mark/linux.git arm64/entry-deasm-new
head:   6b2f792068b31c949e04432af560cb18b0430880
commit: 1e1c052e17dae6864c0cba7dbd5106fed9e8c4b1 [18/25] arm64: entry: move do_notify_resume() to entry-common.c
config: arm64-randconfig-r024-20200805 (attached as .config)
compiler: aarch64-linux-gcc (GCC) 9.3.0
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
        git checkout 1e1c052e17dae6864c0cba7dbd5106fed9e8c4b1
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm64 

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 >>):

>> arch/arm64/kernel/entry-common.c:34:17: warning: no previous prototype for 'do_notify_resume' [-Wmissing-prototypes]
      34 | asmlinkage void do_notify_resume(struct pt_regs *regs,
         |                 ^~~~~~~~~~~~~~~~
   arch/arm64/kernel/entry-common.c:97:25: warning: no previous prototype for 'prepare_ret_from_fork' [-Wmissing-prototypes]
      97 | asmlinkage void notrace prepare_ret_from_fork(void)
         |                         ^~~~~~~~~~~~~~~~~~~~~
   arch/arm64/kernel/entry-common.c:159:13: warning: no previous prototype for 'el1_sync_handler' [-Wmissing-prototypes]
     159 | EL1_HANDLER(el1_sync_handler, regs)
         |             ^~~~~~~~~~~~~~~~
   arch/arm64/kernel/entry-common.c:106:25: note: in definition of macro 'ELx_HANDLER'
     106 | asmlinkage void notrace name(struct pt_regs *regs)   \
         |                         ^~~~
   arch/arm64/kernel/entry-common.c:159:1: note: in expansion of macro 'EL1_HANDLER'
     159 | EL1_HANDLER(el1_sync_handler, regs)
         | ^~~~~~~~~~~
   arch/arm64/kernel/entry-common.c:313:13: warning: no previous prototype for 'el0_sync_handler' [-Wmissing-prototypes]
     313 | EL0_HANDLER(el0_sync_handler, regs)
         |             ^~~~~~~~~~~~~~~~
   arch/arm64/kernel/entry-common.c:106:25: note: in definition of macro 'ELx_HANDLER'
     106 | asmlinkage void notrace name(struct pt_regs *regs)   \
         |                         ^~~~
   arch/arm64/kernel/entry-common.c:313:1: note: in expansion of macro 'EL0_HANDLER'
     313 | EL0_HANDLER(el0_sync_handler, regs)
         | ^~~~~~~~~~~
   arch/arm64/kernel/entry-common.c:451:13: warning: no previous prototype for 'el1_irq_handler' [-Wmissing-prototypes]
     451 | EL1_HANDLER(el1_irq_handler, regs)
         |             ^~~~~~~~~~~~~~~
   arch/arm64/kernel/entry-common.c:106:25: note: in definition of macro 'ELx_HANDLER'
     106 | asmlinkage void notrace name(struct pt_regs *regs)   \
         |                         ^~~~
   arch/arm64/kernel/entry-common.c:451:1: note: in expansion of macro 'EL1_HANDLER'
     451 | EL1_HANDLER(el1_irq_handler, regs)
         | ^~~~~~~~~~~
   arch/arm64/kernel/entry-common.c:468:13: warning: no previous prototype for 'el0_irq_handler' [-Wmissing-prototypes]
     468 | EL0_HANDLER(el0_irq_handler, regs)
         |             ^~~~~~~~~~~~~~~
   arch/arm64/kernel/entry-common.c:106:25: note: in definition of macro 'ELx_HANDLER'
     106 | asmlinkage void notrace name(struct pt_regs *regs)   \
         |                         ^~~~
   arch/arm64/kernel/entry-common.c:468:1: note: in expansion of macro 'EL0_HANDLER'
     468 | EL0_HANDLER(el0_irq_handler, regs)
         | ^~~~~~~~~~~
   arch/arm64/kernel/entry-common.c:478:13: warning: no previous prototype for 'el1_error_handler' [-Wmissing-prototypes]
     478 | EL1_HANDLER(el1_error_handler, regs)
         |             ^~~~~~~~~~~~~~~~~
   arch/arm64/kernel/entry-common.c:106:25: note: in definition of macro 'ELx_HANDLER'
     106 | asmlinkage void notrace name(struct pt_regs *regs)   \
         |                         ^~~~
   arch/arm64/kernel/entry-common.c:478:1: note: in expansion of macro 'EL1_HANDLER'
     478 | EL1_HANDLER(el1_error_handler, regs)
         | ^~~~~~~~~~~
   arch/arm64/kernel/entry-common.c:486:13: warning: no previous prototype for 'el0_error_handler' [-Wmissing-prototypes]
     486 | EL0_HANDLER(el0_error_handler, regs)
         |             ^~~~~~~~~~~~~~~~~
   arch/arm64/kernel/entry-common.c:106:25: note: in definition of macro 'ELx_HANDLER'
     106 | asmlinkage void notrace name(struct pt_regs *regs)   \
         |                         ^~~~
   arch/arm64/kernel/entry-common.c:486:1: note: in expansion of macro 'EL0_HANDLER'
     486 | EL0_HANDLER(el0_error_handler, regs)
         | ^~~~~~~~~~~

vim +/do_notify_resume +34 arch/arm64/kernel/entry-common.c

    33	
  > 34	asmlinkage void do_notify_resume(struct pt_regs *regs,
    35					 unsigned long thread_flags)
    36	{
    37		/*
    38		 * The assembly code enters us with IRQs off, but it hasn't
    39		 * informed the tracing code of that for efficiency reasons.
    40		 * Update the trace code with the current status.
    41		 */
    42		trace_hardirqs_off();
    43	
    44		do {
    45			/* Check valid user FS if needed */
    46			addr_limit_user_check();
    47	
    48			if (thread_flags & _TIF_NEED_RESCHED) {
    49				/* Unmask Debug and SError for the next task */
    50				local_daif_restore(DAIF_PROCCTX_NOIRQ);
    51	
    52				schedule();
    53			} else {
    54				local_daif_restore(DAIF_PROCCTX);
    55	
    56				if (thread_flags & _TIF_UPROBE)
    57					uprobe_notify_resume(regs);
    58	
    59				if (thread_flags & _TIF_SIGPENDING)
    60					do_signal(regs);
    61	
    62				if (thread_flags & _TIF_NOTIFY_RESUME) {
    63					clear_thread_flag(TIF_NOTIFY_RESUME);
    64					tracehook_notify_resume(regs);
    65					rseq_handle_notify_resume(NULL, regs);
    66				}
    67	
    68				if (thread_flags & _TIF_FOREIGN_FPSTATE)
    69					fpsimd_restore_current_state();
    70			}
    71	
    72			local_daif_mask();
    73			thread_flags = READ_ONCE(current_thread_info()->flags);
    74		} while (thread_flags & _TIF_WORK_MASK);
    75	}
    76	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org

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