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Subject[mingo-tip:sched/headers 1785/2372] kernel/sched/core.c:5331:20: warning: no previous prototype for 'task_sched_runtime'
tree:   git://git.kernel.org/pub/scm/linux/kernel/git/mingo/tip.git sched/headers
head: 67f8f45b4d0cf00f8e53fc1c2b50c67608ede063
commit: b0906e7a2f182e8f595888b41c1fc6f0c80c4f6d [1785/2372] headers/deps: Reorganize, clean up and optimize kernel/sched/sched.h dependencies
config: i386-tinyconfig (https://download.01.org/0day-ci/archive/20220108/202201081252.k0vPJH1N-lkp@intel.com/config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
# https://git.kernel.org/pub/scm/linux/kernel/git/mingo/tip.git/commit/?id=b0906e7a2f182e8f595888b41c1fc6f0c80c4f6d
git remote add mingo-tip git://git.kernel.org/pub/scm/linux/kernel/git/mingo/tip.git
git fetch --no-tags mingo-tip sched/headers
git checkout b0906e7a2f182e8f595888b41c1fc6f0c80c4f6d
# save the config file to linux build tree
mkdir build_dir
make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash

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 >>):

>> kernel/sched/core.c:5331:20: warning: no previous prototype for 'task_sched_runtime' [-Wmissing-prototypes]
5331 | unsigned long long task_sched_runtime(struct task_struct *p)
| ^~~~~~~~~~~~~~~~~~
>> kernel/sched/core.c:9450:13: warning: no previous prototype for 'sched_init_smp' [-Wmissing-prototypes]
9450 | void __init sched_init_smp(void)
| ^~~~~~~~~~~~~~
kernel/sched/core.c:9480:13: warning: no previous prototype for 'per_task_init' [-Wmissing-prototypes]
9480 | void __init per_task_init(void)
| ^~~~~~~~~~~~~
>> kernel/sched/core.c:9489:13: warning: no previous prototype for 'sched_init' [-Wmissing-prototypes]
9489 | void __init sched_init(void)
| ^~~~~~~~~~


vim +/task_sched_runtime +5331 kernel/sched/core.c

6075620b0590ea kernel/sched/core.c Giovanni Gherdovich 2016-08-05 5325
c5f8d99585d7b5 kernel/sched.c Hidetoshi Seto 2009-03-31 5326 /*
c5f8d99585d7b5 kernel/sched.c Hidetoshi Seto 2009-03-31 5327 * Return accounted runtime for the task.
c5f8d99585d7b5 kernel/sched.c Hidetoshi Seto 2009-03-31 5328 * In case the task is currently running, return the runtime plus current's
c5f8d99585d7b5 kernel/sched.c Hidetoshi Seto 2009-03-31 5329 * pending runtime that have not been accounted yet.
c5f8d99585d7b5 kernel/sched.c Hidetoshi Seto 2009-03-31 5330 */
c5f8d99585d7b5 kernel/sched.c Hidetoshi Seto 2009-03-31 @5331 unsigned long long task_sched_runtime(struct task_struct *p)
c5f8d99585d7b5 kernel/sched.c Hidetoshi Seto 2009-03-31 5332 {
eb58075149b7f0 kernel/sched/core.c Peter Zijlstra 2015-07-31 5333 struct rq_flags rf;
c5f8d99585d7b5 kernel/sched.c Hidetoshi Seto 2009-03-31 5334 struct rq *rq;
6e998916dfe327 kernel/sched/core.c Stanislaw Gruszka 2014-11-12 5335 u64 ns;
c5f8d99585d7b5 kernel/sched.c Hidetoshi Seto 2009-03-31 5336

:::::: The code at line 5331 was first introduced by commit
:::::: c5f8d99585d7b5b7e857fabf8aefd0174903a98c posixtimers, sched: Fix posix clock monotonicity

:::::: TO: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
:::::: CC: Ingo Molnar <mingo@elte.hu>

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

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