kbuild test robot
2019-Jul-22 17:41 UTC
[vhost:linux-next 4/5] kernel/rcu/tiny.c:138:22: error: 'rcu_data' undeclared
tree: https://kernel.googlesource.com/pub/scm/linux/kernel/git/mst/vhost.git
linux-next
head: 25da3c2b439666602852820e3231349085682e1a
commit: 4cfd64ce2ad979cbd9a97e1500533d2f5f1355b8 [4/5] rcu: add count of
outstanding callbacks
config: i386-allnoconfig (attached as .config)
compiler: gcc-7 (Debian 7.4.0-10) 7.4.0
reproduce:
git checkout 4cfd64ce2ad979cbd9a97e1500533d2f5f1355b8
# 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 at intel.com>
All error/warnings (new ones prefixed by >>):
In file included from include/asm-generic/percpu.h:7:0,
from arch/x86/include/asm/percpu.h:556,
from arch/x86/include/asm/preempt.h:6,
from include/linux/preempt.h:78,
from include/linux/spinlock.h:51,
from include/linux/wait.h:9,
from include/linux/completion.h:12,
from kernel/rcu/tiny.c:12:
kernel/rcu/tiny.c: In function
'call_rcu_outstanding':>> kernel/rcu/tiny.c:138:22: error: 'rcu_data' undeclared (first
use in this function)
rdp = this_cpu_ptr(&rcu_data);
^
include/linux/percpu-defs.h:220:47: note: in definition of macro
'__verify_pcpu_ptr'
const void __percpu *__vpp_verify = (typeof((ptr) + 0))NULL; \
^~~>> include/linux/percpu-defs.h:264:47: note: in expansion of macro
'VERIFY_PERCPU_PTR'
#define per_cpu_ptr(ptr, cpu) ({ (void)(cpu); VERIFY_PERCPU_PTR(ptr); })
^~~~~~~~~~~~~~~~~>> include/linux/percpu-defs.h:265:26: note: in expansion of macro
'per_cpu_ptr'
#define raw_cpu_ptr(ptr) per_cpu_ptr(ptr, 0)
^~~~~~~~~~~>> include/linux/percpu-defs.h:266:27: note: in expansion of macro
'raw_cpu_ptr'
#define this_cpu_ptr(ptr) raw_cpu_ptr(ptr)
^~~~~~~~~~~>> kernel/rcu/tiny.c:138:8: note: in expansion of macro
'this_cpu_ptr'
rdp = this_cpu_ptr(&rcu_data);
^~~~~~~~~~~~
kernel/rcu/tiny.c:138:22: note: each undeclared identifier is reported only
once for each function it appears in
rdp = this_cpu_ptr(&rcu_data);
^
include/linux/percpu-defs.h:220:47: note: in definition of macro
'__verify_pcpu_ptr'
const void __percpu *__vpp_verify = (typeof((ptr) + 0))NULL; \
^~~>> include/linux/percpu-defs.h:264:47: note: in expansion of macro
'VERIFY_PERCPU_PTR'
#define per_cpu_ptr(ptr, cpu) ({ (void)(cpu); VERIFY_PERCPU_PTR(ptr); })
^~~~~~~~~~~~~~~~~>> include/linux/percpu-defs.h:265:26: note: in expansion of macro
'per_cpu_ptr'
#define raw_cpu_ptr(ptr) per_cpu_ptr(ptr, 0)
^~~~~~~~~~~>> include/linux/percpu-defs.h:266:27: note: in expansion of macro
'raw_cpu_ptr'
#define this_cpu_ptr(ptr) raw_cpu_ptr(ptr)
^~~~~~~~~~~>> kernel/rcu/tiny.c:138:8: note: in expansion of macro
'this_cpu_ptr'
rdp = this_cpu_ptr(&rcu_data);
^~~~~~~~~~~~
vim +/rcu_data +138 kernel/rcu/tiny.c
---
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