* [zen-kernel-zen-kernel:5.9/muqss 1/20] kernel/sched/MuQSS.c:639:6: warning: no previous prototype for function 'resched_task'
@ 2020-11-24 5:37 kernel test robot
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From: kernel test robot @ 2020-11-24 5:37 UTC (permalink / raw)
To: kbuild-all
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tree: https://github.com/zen-kernel/zen-kernel 5.9/muqss
head: 8969d3bb632504cea984c900b71176e2d4c7997e
commit: 49e82d66c704858ba77947984535811593d6dacb [1/20] MultiQueue Skiplist Scheduler v0.204
config: arm-randconfig-r036-20201124 (attached as .config)
compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project df9ae5992889560a8f3c6760b54d5051b47c7bf5)
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 arm cross compiling tool for clang build
# apt-get install binutils-arm-linux-gnueabi
# https://github.com/zen-kernel/zen-kernel/commit/49e82d66c704858ba77947984535811593d6dacb
git remote add zen-kernel-zen-kernel https://github.com/zen-kernel/zen-kernel
git fetch --no-tags zen-kernel-zen-kernel 5.9/muqss
git checkout 49e82d66c704858ba77947984535811593d6dacb
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All error/warnings (new ones prefixed by >>):
>> kernel/sched/MuQSS.c:639:6: warning: no previous prototype for function 'resched_task' [-Wmissing-prototypes]
void resched_task(struct task_struct *p)
^
kernel/sched/MuQSS.c:639:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void resched_task(struct task_struct *p)
^
static
>> kernel/sched/MuQSS.c:3076:15: warning: no previous prototype for function 'nr_active' [-Wmissing-prototypes]
unsigned long nr_active(void)
^
kernel/sched/MuQSS.c:3076:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
unsigned long nr_active(void)
^
static
>> kernel/sched/MuQSS.c:6234:6: warning: no previous prototype for function 'resched_cpu' [-Wmissing-prototypes]
void resched_cpu(int cpu)
^
kernel/sched/MuQSS.c:6234:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void resched_cpu(int cpu)
^
static
>> kernel/sched/MuQSS.c:7697:6: warning: no previous prototype for function 'init_idle_bootup_task' [-Wmissing-prototypes]
void init_idle_bootup_task(struct task_struct *idle)
^
kernel/sched/MuQSS.c:7697:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void init_idle_bootup_task(struct task_struct *idle)
^
static
kernel/sched/MuQSS.c:429:20: warning: unused function 'lock_all_rqs' [-Wunused-function]
static inline void lock_all_rqs(void)
^
kernel/sched/MuQSS.c:441:20: warning: unused function 'unlock_all_rqs' [-Wunused-function]
static inline void unlock_all_rqs(void)
^
kernel/sched/MuQSS.c:454:20: warning: unused function 'trylock_rq' [-Wunused-function]
static inline bool trylock_rq(struct rq *this_rq, struct rq *rq)
^
kernel/sched/MuQSS.c:464:20: warning: unused function 'unlock_rq' [-Wunused-function]
static inline void unlock_rq(struct rq *rq)
^
kernel/sched/MuQSS.c:1233:26: warning: unused function 'rq_order' [-Wunused-function]
static inline struct rq *rq_order(struct rq *rq, int cpu)
^
kernel/sched/MuQSS.c:1238:20: warning: unused function 'smt_schedule' [-Wunused-function]
static inline bool smt_schedule(struct task_struct *p, struct rq *rq)
^
kernel/sched/MuQSS.c:1976:19: warning: unused function 'select_best_cpu' [-Wunused-function]
static inline int select_best_cpu(struct task_struct *p)
^
kernel/sched/MuQSS.c:3195:19: warning: unused function 'steal_ticks' [-Wunused-function]
static inline u64 steal_ticks(u64 steal)
^
kernel/sched/MuQSS.c:3681:20: warning: unused function 'sched_start_tick' [-Wunused-function]
static inline void sched_start_tick(struct rq *rq, int cpu) {}
^
kernel/sched/MuQSS.c:3682:20: warning: unused function 'sched_tick_start' [-Wunused-function]
static inline void sched_tick_start(int cpu) { }
^
kernel/sched/MuQSS.c:3683:20: warning: unused function 'sched_tick_stop' [-Wunused-function]
static inline void sched_tick_stop(int cpu) { }
^
15 warnings generated.
--
>> kernel/sched/membarrier.c:39:17: error: use of undeclared identifier 'runqueues'
this_cpu_write(runqueues.membarrier_state,
^
>> kernel/sched/membarrier.c:39:17: error: use of undeclared identifier 'runqueues'
>> kernel/sched/membarrier.c:39:17: error: use of undeclared identifier 'runqueues'
>> kernel/sched/membarrier.c:39:17: error: use of undeclared identifier 'runqueues'
>> kernel/sched/membarrier.c:39:2: error: indirection requires pointer operand ('void' invalid)
this_cpu_write(runqueues.membarrier_state,
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/percpu-defs.h:508:34: note: expanded from macro 'this_cpu_write'
#define this_cpu_write(pcp, val) __pcpu_size_call(this_cpu_write_, pcp, val)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/percpu-defs.h:377:11: note: expanded from macro '__pcpu_size_call'
case 1: stem##1(variable, __VA_ARGS__);break; \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<scratch space>:76:1: note: expanded from here
this_cpu_write_1
^
include/asm-generic/percpu.h:333:36: note: expanded from macro 'this_cpu_write_1'
#define this_cpu_write_1(pcp, val) this_cpu_generic_to_op(pcp, val, =)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/asm-generic/percpu.h:148:2: note: expanded from macro 'this_cpu_generic_to_op'
raw_cpu_generic_to_op(pcp, val, op); \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/asm-generic/percpu.h:72:2: note: expanded from macro 'raw_cpu_generic_to_op'
*raw_cpu_ptr(&(pcp)) op val; \
^~~~~~~~~~~~~~~~~~~~
>> kernel/sched/membarrier.c:39:17: error: use of undeclared identifier 'runqueues'
this_cpu_write(runqueues.membarrier_state,
^
>> kernel/sched/membarrier.c:39:17: error: use of undeclared identifier 'runqueues'
>> kernel/sched/membarrier.c:39:2: error: indirection requires pointer operand ('void' invalid)
this_cpu_write(runqueues.membarrier_state,
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/percpu-defs.h:508:34: note: expanded from macro 'this_cpu_write'
#define this_cpu_write(pcp, val) __pcpu_size_call(this_cpu_write_, pcp, val)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/percpu-defs.h:378:11: note: expanded from macro '__pcpu_size_call'
case 2: stem##2(variable, __VA_ARGS__);break; \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<scratch space>:77:1: note: expanded from here
this_cpu_write_2
^
include/asm-generic/percpu.h:336:36: note: expanded from macro 'this_cpu_write_2'
#define this_cpu_write_2(pcp, val) this_cpu_generic_to_op(pcp, val, =)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/asm-generic/percpu.h:148:2: note: expanded from macro 'this_cpu_generic_to_op'
raw_cpu_generic_to_op(pcp, val, op); \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/asm-generic/percpu.h:72:2: note: expanded from macro 'raw_cpu_generic_to_op'
*raw_cpu_ptr(&(pcp)) op val; \
^~~~~~~~~~~~~~~~~~~~
>> kernel/sched/membarrier.c:39:17: error: use of undeclared identifier 'runqueues'
this_cpu_write(runqueues.membarrier_state,
^
>> kernel/sched/membarrier.c:39:17: error: use of undeclared identifier 'runqueues'
>> kernel/sched/membarrier.c:39:2: error: indirection requires pointer operand ('void' invalid)
this_cpu_write(runqueues.membarrier_state,
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/percpu-defs.h:508:34: note: expanded from macro 'this_cpu_write'
#define this_cpu_write(pcp, val) __pcpu_size_call(this_cpu_write_, pcp, val)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/percpu-defs.h:379:11: note: expanded from macro '__pcpu_size_call'
case 4: stem##4(variable, __VA_ARGS__);break; \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<scratch space>:78:1: note: expanded from here
this_cpu_write_4
^
include/asm-generic/percpu.h:339:36: note: expanded from macro 'this_cpu_write_4'
#define this_cpu_write_4(pcp, val) this_cpu_generic_to_op(pcp, val, =)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/asm-generic/percpu.h:148:2: note: expanded from macro 'this_cpu_generic_to_op'
raw_cpu_generic_to_op(pcp, val, op); \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/asm-generic/percpu.h:72:2: note: expanded from macro 'raw_cpu_generic_to_op'
*raw_cpu_ptr(&(pcp)) op val; \
^~~~~~~~~~~~~~~~~~~~
>> kernel/sched/membarrier.c:39:17: error: use of undeclared identifier 'runqueues'
this_cpu_write(runqueues.membarrier_state,
^
>> kernel/sched/membarrier.c:39:17: error: use of undeclared identifier 'runqueues'
>> kernel/sched/membarrier.c:39:2: error: indirection requires pointer operand ('void' invalid)
this_cpu_write(runqueues.membarrier_state,
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/percpu-defs.h:508:34: note: expanded from macro 'this_cpu_write'
#define this_cpu_write(pcp, val) __pcpu_size_call(this_cpu_write_, pcp, val)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/percpu-defs.h:380:11: note: expanded from macro '__pcpu_size_call'
case 8: stem##8(variable, __VA_ARGS__);break; \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<scratch space>:79:1: note: expanded from here
this_cpu_write_8
^
include/asm-generic/percpu.h:342:36: note: expanded from macro 'this_cpu_write_8'
#define this_cpu_write_8(pcp, val) this_cpu_generic_to_op(pcp, val, =)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/asm-generic/percpu.h:148:2: note: expanded from macro 'this_cpu_generic_to_op'
raw_cpu_generic_to_op(pcp, val, op); \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/asm-generic/percpu.h:72:2: note: expanded from macro 'raw_cpu_generic_to_op'
*raw_cpu_ptr(&(pcp)) op val; \
^~~~~~~~~~~~~~~~~~~~
kernel/sched/membarrier.c:63:17: error: use of undeclared identifier 'runqueues'
this_cpu_write(runqueues.membarrier_state, 0);
^
kernel/sched/membarrier.c:63:17: error: use of undeclared identifier 'runqueues'
kernel/sched/membarrier.c:63:17: error: use of undeclared identifier 'runqueues'
kernel/sched/membarrier.c:63:17: error: use of undeclared identifier 'runqueues'
kernel/sched/membarrier.c:63:2: error: indirection requires pointer operand ('void' invalid)
this_cpu_write(runqueues.membarrier_state, 0);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/percpu-defs.h:508:34: note: expanded from macro 'this_cpu_write'
#define this_cpu_write(pcp, val) __pcpu_size_call(this_cpu_write_, pcp, val)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/percpu-defs.h:377:11: note: expanded from macro '__pcpu_size_call'
case 1: stem##1(variable, __VA_ARGS__);break; \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<scratch space>:83:1: note: expanded from here
this_cpu_write_1
^
include/asm-generic/percpu.h:333:36: note: expanded from macro 'this_cpu_write_1'
#define this_cpu_write_1(pcp, val) this_cpu_generic_to_op(pcp, val, =)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/asm-generic/percpu.h:148:2: note: expanded from macro 'this_cpu_generic_to_op'
raw_cpu_generic_to_op(pcp, val, op); \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/asm-generic/percpu.h:72:2: note: expanded from macro 'raw_cpu_generic_to_op'
*raw_cpu_ptr(&(pcp)) op val; \
^~~~~~~~~~~~~~~~~~~~
fatal error: too many errors emitted, stopping now [-ferror-limit=]
20 errors generated.
vim +/resched_task +639 kernel/sched/MuQSS.c
631
632 /*
633 * resched_task - mark a task 'to be rescheduled now'.
634 *
635 * On UP this means the setting of the need_resched flag, on SMP it
636 * might also involve a cross-CPU call to trigger the scheduler on
637 * the target CPU.
638 */
> 639 void resched_task(struct task_struct *p)
640 {
641 int cpu;
642 #ifdef CONFIG_LOCKDEP
643 /* Kernel threads call this when creating workqueues while still
644 * inactive from __kthread_bind_mask, holding only the pi_lock */
645 if (!(p->flags & PF_KTHREAD)) {
646 struct rq *rq = task_rq(p);
647
648 lockdep_assert_held(rq->lock);
649 }
650 #endif
651 if (test_tsk_need_resched(p))
652 return;
653
654 cpu = task_cpu(p);
655 if (cpu == smp_processor_id()) {
656 set_tsk_need_resched(p);
657 set_preempt_need_resched();
658 return;
659 }
660
661 if (set_nr_and_not_polling(p))
662 smp_sched_reschedule(cpu);
663 else
664 trace_sched_wake_idle_without_ipi(cpu);
665 }
666
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org
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