tree:
git://linux-arm.org/linux-de.git tip/sched/core_dl_fix_dl_cap_aw
head: 5f50571676da5c98ea40e9eb008e85be2e2d177d
commit: f23df27535d751f761ec7593b8d6311f8385b990 [4/5] sched/deadline: Make DL
capacity-aware
config: i386-tinyconfig (attached as .config)
compiler: gcc-7 (Debian 7.5.0-3) 7.5.0
reproduce:
git checkout f23df27535d751f761ec7593b8d6311f8385b990
# save the attached .config to linux build tree
make ARCH=i386
If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp(a)intel.com>
All error/warnings (new ones prefixed by >>):
In file included from arch/x86/include/asm/current.h:5:0,
from include/linux/sched.h:12,
from kernel/sched/sched.h:5,
from kernel/sched/deadline.c:18:
kernel/sched/deadline.c: In function 'dl_task_fits_capacity':
> kernel/sched/deadline.c:660:31: error:
'sched_asym_cpucapacity' undeclared (first use in this function); did you mean
'arch_scale_cpu_capacity'?
if
(!static_branch_unlikely(&sched_asym_cpucapacity))
^
include/linux/compiler.h:78:42: note: in definition of macro 'unlikely'
# define unlikely(x) __builtin_expect(!!(x), 0)
^
> include/linux/jump_label.h:481:44: note: in expansion of macro
'static_key_enabled'
#define static_branch_unlikely(x)
unlikely(static_key_enabled(&(x)->key))
^~~~~~~~~~~~~~~~~~
> kernel/sched/deadline.c:660:7: note: in expansion of macro
'static_branch_unlikely'
if
(!static_branch_unlikely(&sched_asym_cpucapacity))
^~~~~~~~~~~~~~~~~~~~~~
kernel/sched/deadline.c:660:31: note: each undeclared identifier is reported only once
for each function it appears in
if (!static_branch_unlikely(&sched_asym_cpucapacity))
^
include/linux/compiler.h:78:42: note: in definition of macro 'unlikely'
# define unlikely(x) __builtin_expect(!!(x), 0)
^
> include/linux/jump_label.h:481:44: note: in expansion of macro
'static_key_enabled'
#define static_branch_unlikely(x)
unlikely(static_key_enabled(&(x)->key))
^~~~~~~~~~~~~~~~~~
> kernel/sched/deadline.c:660:7: note: in expansion of macro
'static_branch_unlikely'
if
(!static_branch_unlikely(&sched_asym_cpucapacity))
^~~~~~~~~~~~~~~~~~~~~~
--
In file included from arch/x86/include/asm/current.h:5:0,
from include/linux/sched.h:12,
from kernel//sched/sched.h:5,
from kernel//sched/deadline.c:18:
kernel//sched/deadline.c: In function 'dl_task_fits_capacity':
kernel//sched/deadline.c:660:31: error: 'sched_asym_cpucapacity' undeclared
(first use in this function); did you mean 'arch_scale_cpu_capacity'?
if (!static_branch_unlikely(&sched_asym_cpucapacity))
^
include/linux/compiler.h:78:42: note: in definition of macro 'unlikely'
# define unlikely(x) __builtin_expect(!!(x), 0)
^
> include/linux/jump_label.h:481:44: note: in expansion of macro
'static_key_enabled'
#define static_branch_unlikely(x)
unlikely(static_key_enabled(&(x)->key))
^~~~~~~~~~~~~~~~~~
kernel//sched/deadline.c:660:7: note: in expansion of macro
'static_branch_unlikely'
if (!static_branch_unlikely(&sched_asym_cpucapacity))
^~~~~~~~~~~~~~~~~~~~~~
kernel//sched/deadline.c:660:31: note: each undeclared identifier is reported only once
for each function it appears in
if (!static_branch_unlikely(&sched_asym_cpucapacity))
^
include/linux/compiler.h:78:42: note: in definition of macro 'unlikely'
# define unlikely(x) __builtin_expect(!!(x), 0)
^
> include/linux/jump_label.h:481:44: note: in expansion of macro
'static_key_enabled'
#define static_branch_unlikely(x)
unlikely(static_key_enabled(&(x)->key))
^~~~~~~~~~~~~~~~~~
kernel//sched/deadline.c:660:7: note: in expansion of macro
'static_branch_unlikely'
if (!static_branch_unlikely(&sched_asym_cpucapacity))
^~~~~~~~~~~~~~~~~~~~~~
vim +660 kernel/sched/deadline.c
642
643 /*
644 * Verify the fitness of task @p to run on @cpu taking into account the
645 * CPU original capacity and the runtime/deadline ratio of the task.
646 *
647 * This check is only important for heterogeneous systems where CPU
648 * original capacity can be less than SCHED_CAPACITY_SCALE. For
649 * non-heterogeneous system this function will always return true.
650 *
651 * The function will return true if the CPU original capacity of the
652 * @cpu scaled by SCHED_CAPACITY_SCALE >= runtime/deadline ratio of the
653 * task and false otherwise.
654 */
655 static inline bool dl_task_fits_capacity(struct task_struct *p, int cpu)
656 {
657 u64 deadline, runtime;
658 unsigned long cap;
659
660 if (!static_branch_unlikely(&sched_asym_cpucapacity))
661 return true;
662
663 cap = arch_scale_cpu_capacity(cpu);
664 deadline = p->dl.dl_deadline;
665 runtime = p->dl.dl_runtime;
666
667 return cap_scale(deadline, cap) >= runtime;
668 }
669
---
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