tree: https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git rcu/dev head: dab0b22dfc3bd3ed37876b2465dc622a39ae25e0 commit: dab0b22dfc3bd3ed37876b2465dc622a39ae25e0 [25/25] EXP: timer: Repeat timers_dead_cpu() in sched_cpu_deactivate() config: x86_64-randconfig-x003-201749 (attached as .config) compiler: gcc-7 (Debian 7.2.0-12) 7.2.1 20171025 reproduce: git checkout dab0b22dfc3bd3ed37876b2465dc622a39ae25e0 # save the attached .config to linux build tree make ARCH=x86_64
All error/warnings (new ones prefixed by >>):
In file included from include/uapi/linux/posix_types.h:5:0,
from include/uapi/linux/types.h:14,
from include/linux/compiler.h:164,
from arch/x86/include/asm/current.h:5,
from include/linux/sched.h:12,
from kernel/sched/core.c:8:
kernel/sched/core.c: In function 'sched_cpu_deactivate':
>> include/linux/stddef.h:8:14: error: called object is not a function or
>> function pointer
#define NULL ((void *)0)
^
>> include/linux/timer.h:212:25: note: in expansion of macro 'NULL'
#define timers_dead_cpu NULL
^~~~
>> kernel/sched/core.c:5684:2: note: in expansion of macro 'timers_dead_cpu'
timers_dead_cpu(cpu);
^~~~~~~~~~~~~~~
--
In file included from include/uapi/linux/posix_types.h:5:0,
from include/uapi/linux/types.h:14,
from include/linux/compiler.h:164,
from arch/x86/include/asm/current.h:5,
from include/linux/sched.h:12,
from kernel//sched/core.c:8:
kernel//sched/core.c: In function 'sched_cpu_deactivate':
>> include/linux/stddef.h:8:14: error: called object is not a function or
>> function pointer
#define NULL ((void *)0)
^
>> include/linux/timer.h:212:25: note: in expansion of macro 'NULL'
#define timers_dead_cpu NULL
^~~~
kernel//sched/core.c:5684:2: note: in expansion of macro 'timers_dead_cpu'
timers_dead_cpu(cpu);
^~~~~~~~~~~~~~~
vim +/timers_dead_cpu +5684 kernel/sched/core.c
5678
5679 int sched_cpu_deactivate(unsigned int cpu)
5680 {
5681 int ret;
5682
5683 set_cpu_active(cpu, false);
> 5684 timers_dead_cpu(cpu);
5685 /*
5686 * We've cleared cpu_active_mask, wait for all preempt-disabled
and RCU
5687 * users of this state to go away such that all new such users
will
5688 * observe it.
5689 *
5690 * Do sync before park smpboot threads to take care the rcu
boost case.
5691 */
5692 synchronize_rcu_mult(call_rcu, call_rcu_sched);
5693
5694 if (!sched_smp_initialized)
5695 return 0;
5696
5697 ret = cpuset_cpu_inactive(cpu);
5698 if (ret) {
5699 set_cpu_active(cpu, true);
5700 return ret;
5701 }
5702 sched_domains_numa_masks_clear(cpu);
5703 return 0;
5704 }
5705
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https://lists.01.org/pipermail/kbuild-all Intel Corporation
.config.gz
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