* [linux-next:master 4053/14131] kernel//rcu/tasks.h:257:6: warning: no previous prototype for function 'rcu_tasks_postscan'
@ 2020-05-31 15:00 kbuild test robot
2020-05-31 15:57 ` Paul E. McKenney
0 siblings, 1 reply; 2+ messages in thread
From: kbuild test robot @ 2020-05-31 15:00 UTC (permalink / raw
To: kbuild-all
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tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head: e7b08814b16b80a0bf76eeca16317f8c2ed23b8c
commit: e4fe5dd6f26f74233e217d9dd351adc3e5165bb9 [4053/14131] rcu-tasks: Further refactor RCU-tasks to allow adding more variants
config: x86_64-randconfig-a015-20200529 (attached as .config)
compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 2d068e534f1671459e1b135852c1b3c10502e929)
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
# install x86_64 cross compiling tool for clang build
# apt-get install binutils-x86-64-linux-gnu
git checkout e4fe5dd6f26f74233e217d9dd351adc3e5165bb9
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64
If you fix the issue, kindly add following tag as appropriate
Reported-by: kbuild test robot <lkp@intel.com>
All warnings (new ones prefixed by >>, old ones prefixed by <<):
In file included from kernel//rcu/update.c:588:
>> kernel//rcu/tasks.h:257:6: warning: no previous prototype for function 'rcu_tasks_postscan' [-Wmissing-prototypes]
void rcu_tasks_postscan(void)
^
kernel//rcu/tasks.h:257:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void rcu_tasks_postscan(void)
^
static
1 warning generated.
vim +/rcu_tasks_postscan +257 kernel//rcu/tasks.h
255
256 /* Processing between scanning taskslist and draining the holdout list. */
> 257 void rcu_tasks_postscan(void)
258 {
259 /*
260 * Wait for tasks that are in the process of exiting. This
261 * does only part of the job, ensuring that all tasks that were
262 * previously exiting reach the point where they have disabled
263 * preemption, allowing the later synchronize_rcu() to finish
264 * the job.
265 */
266 synchronize_srcu(&tasks_rcu_exit_srcu);
267 }
268
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org
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^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [linux-next:master 4053/14131] kernel//rcu/tasks.h:257:6: warning: no previous prototype for function 'rcu_tasks_postscan'
2020-05-31 15:00 [linux-next:master 4053/14131] kernel//rcu/tasks.h:257:6: warning: no previous prototype for function 'rcu_tasks_postscan' kbuild test robot
@ 2020-05-31 15:57 ` Paul E. McKenney
0 siblings, 0 replies; 2+ messages in thread
From: Paul E. McKenney @ 2020-05-31 15:57 UTC (permalink / raw
To: kbuild-all
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On Sun, May 31, 2020 at 11:00:26PM +0800, kbuild test robot wrote:
> tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
> head: e7b08814b16b80a0bf76eeca16317f8c2ed23b8c
> commit: e4fe5dd6f26f74233e217d9dd351adc3e5165bb9 [4053/14131] rcu-tasks: Further refactor RCU-tasks to allow adding more variants
> config: x86_64-randconfig-a015-20200529 (attached as .config)
> compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 2d068e534f1671459e1b135852c1b3c10502e929)
> 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
> # install x86_64 cross compiling tool for clang build
> # apt-get install binutils-x86-64-linux-gnu
> git checkout e4fe5dd6f26f74233e217d9dd351adc3e5165bb9
> # save the attached .config to linux build tree
> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64
>
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kbuild test robot <lkp@intel.com>
>
> All warnings (new ones prefixed by >>, old ones prefixed by <<):
Fixed by b47663597c1b ("rcu-tasks: Make rcu_tasks_postscan() be static"),
now in -rcu on branch "dev".
Thanx, Paul
> In file included from kernel//rcu/update.c:588:
> >> kernel//rcu/tasks.h:257:6: warning: no previous prototype for function 'rcu_tasks_postscan' [-Wmissing-prototypes]
> void rcu_tasks_postscan(void)
> ^
> kernel//rcu/tasks.h:257:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
> void rcu_tasks_postscan(void)
> ^
> static
> 1 warning generated.
>
> vim +/rcu_tasks_postscan +257 kernel//rcu/tasks.h
>
> 255
> 256 /* Processing between scanning taskslist and draining the holdout list. */
> > 257 void rcu_tasks_postscan(void)
> 258 {
> 259 /*
> 260 * Wait for tasks that are in the process of exiting. This
> 261 * does only part of the job, ensuring that all tasks that were
> 262 * previously exiting reach the point where they have disabled
> 263 * preemption, allowing the later synchronize_rcu() to finish
> 264 * the job.
> 265 */
> 266 synchronize_srcu(&tasks_rcu_exit_srcu);
> 267 }
> 268
>
> ---
> 0-DAY CI Kernel Test Service, Intel Corporation
> https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org
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2020-05-31 15:00 [linux-next:master 4053/14131] kernel//rcu/tasks.h:257:6: warning: no previous prototype for function 'rcu_tasks_postscan' kbuild test robot
2020-05-31 15:57 ` Paul E. McKenney
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