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Date: Wed, 7 Jun 2017 04:02:41 +0800
From: kbuild test robot <lkp@...el.com>
To: Anoob Soman <anoob.soman@...rix.com>
Cc: kbuild-all@...org, xen-devel@...ts.xenproject.org,
linux-kernel@...r.kernel.org, boris.ostrovsky@...cle.com,
jgross@...e.com, Anoob Soman <anoob.soman@...rix.com>
Subject: Re: [PATCH V2] xen-evtchn: Bind dyn evtchn:qemu-dm interrupt to next
online VCPU
Hi Anoob,
[auto build test ERROR on xen-tip/linux-next]
[also build test ERROR on v4.12-rc4 next-20170606]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
url: https://github.com/0day-ci/linux/commits/Anoob-Soman/xen-evtchn-Bind-dyn-evtchn-qemu-dm-interrupt-to-next-online-VCPU/20170607-021300
base: https://git.kernel.org/pub/scm/linux/kernel/git/xen/tip.git linux-next
config: x86_64-randconfig-x010-201723 (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
# save the attached .config to linux build tree
make ARCH=x86_64
All error/warnings (new ones prefixed by >>):
In file included from include/asm-generic/percpu.h:6:0,
from arch/x86/include/asm/percpu.h:542,
from arch/x86/include/asm/preempt.h:5,
from include/linux/preempt.h:80,
from include/linux/spinlock.h:50,
from include/linux/seqlock.h:35,
from include/linux/time.h:5,
from include/linux/stat.h:18,
from include/linux/module.h:10,
from drivers//xen/evtchn.c:36:
drivers//xen/evtchn.c: In function 'evtchn_bind_interdom_next_vcpu':
include/linux/percpu-defs.h:91:33: error: section attribute cannot be specified for local variables
extern __PCPU_DUMMY_ATTRS char __pcpu_unique_##name; \
^
include/linux/percpu-defs.h:116:2: note: in expansion of macro 'DEFINE_PER_CPU_SECTION'
DEFINE_PER_CPU_SECTION(type, name, "")
^~~~~~~~~~~~~~~~~~~~~~
>> drivers//xen/evtchn.c:438:9: note: in expansion of macro 'DEFINE_PER_CPU'
static DEFINE_PER_CPU(int, bind_last_selected_cpu);
^~~~~~~~~~~~~~
include/linux/percpu-defs.h:92:26: error: section attribute cannot be specified for local variables
__PCPU_DUMMY_ATTRS char __pcpu_unique_##name; \
^
include/linux/percpu-defs.h:116:2: note: in expansion of macro 'DEFINE_PER_CPU_SECTION'
DEFINE_PER_CPU_SECTION(type, name, "")
^~~~~~~~~~~~~~~~~~~~~~
>> drivers//xen/evtchn.c:438:9: note: in expansion of macro 'DEFINE_PER_CPU'
static DEFINE_PER_CPU(int, bind_last_selected_cpu);
^~~~~~~~~~~~~~
>> include/linux/percpu-defs.h:92:26: error: declaration of '__pcpu_unique_bind_last_selected_cpu' with no linkage follows extern declaration
__PCPU_DUMMY_ATTRS char __pcpu_unique_##name; \
^
include/linux/percpu-defs.h:116:2: note: in expansion of macro 'DEFINE_PER_CPU_SECTION'
DEFINE_PER_CPU_SECTION(type, name, "")
^~~~~~~~~~~~~~~~~~~~~~
>> drivers//xen/evtchn.c:438:9: note: in expansion of macro 'DEFINE_PER_CPU'
static DEFINE_PER_CPU(int, bind_last_selected_cpu);
^~~~~~~~~~~~~~
include/linux/percpu-defs.h:91:33: note: previous declaration of '__pcpu_unique_bind_last_selected_cpu' was here
extern __PCPU_DUMMY_ATTRS char __pcpu_unique_##name; \
^
include/linux/percpu-defs.h:116:2: note: in expansion of macro 'DEFINE_PER_CPU_SECTION'
DEFINE_PER_CPU_SECTION(type, name, "")
^~~~~~~~~~~~~~~~~~~~~~
>> drivers//xen/evtchn.c:438:9: note: in expansion of macro 'DEFINE_PER_CPU'
static DEFINE_PER_CPU(int, bind_last_selected_cpu);
^~~~~~~~~~~~~~
>> drivers//xen/evtchn.c:438:29: error: section attribute cannot be specified for local variables
static DEFINE_PER_CPU(int, bind_last_selected_cpu);
^
include/linux/percpu-defs.h:93:44: note: in definition of macro 'DEFINE_PER_CPU_SECTION'
extern __PCPU_ATTRS(sec) __typeof__(type) name; \
^~~~
>> drivers//xen/evtchn.c:438:9: note: in expansion of macro 'DEFINE_PER_CPU'
static DEFINE_PER_CPU(int, bind_last_selected_cpu);
^~~~~~~~~~~~~~
>> drivers//xen/evtchn.c:438:29: error: section attribute cannot be specified for local variables
static DEFINE_PER_CPU(int, bind_last_selected_cpu);
^
include/linux/percpu-defs.h:95:19: note: in definition of macro 'DEFINE_PER_CPU_SECTION'
__typeof__(type) name
^~~~
>> drivers//xen/evtchn.c:438:9: note: in expansion of macro 'DEFINE_PER_CPU'
static DEFINE_PER_CPU(int, bind_last_selected_cpu);
^~~~~~~~~~~~~~
>> drivers//xen/evtchn.c:438:29: error: weak declaration of 'bind_last_selected_cpu' must be public
static DEFINE_PER_CPU(int, bind_last_selected_cpu);
^
include/linux/percpu-defs.h:95:19: note: in definition of macro 'DEFINE_PER_CPU_SECTION'
__typeof__(type) name
^~~~
>> drivers//xen/evtchn.c:438:9: note: in expansion of macro 'DEFINE_PER_CPU'
static DEFINE_PER_CPU(int, bind_last_selected_cpu);
^~~~~~~~~~~~~~
>> drivers//xen/evtchn.c:438:29: error: declaration of 'bind_last_selected_cpu' with no linkage follows extern declaration
static DEFINE_PER_CPU(int, bind_last_selected_cpu);
^
include/linux/percpu-defs.h:95:19: note: in definition of macro 'DEFINE_PER_CPU_SECTION'
__typeof__(type) name
^~~~
>> drivers//xen/evtchn.c:438:9: note: in expansion of macro 'DEFINE_PER_CPU'
static DEFINE_PER_CPU(int, bind_last_selected_cpu);
^~~~~~~~~~~~~~
drivers//xen/evtchn.c:438:29: note: previous declaration of 'bind_last_selected_cpu' was here
static DEFINE_PER_CPU(int, bind_last_selected_cpu);
^
include/linux/percpu-defs.h:93:44: note: in definition of macro 'DEFINE_PER_CPU_SECTION'
extern __PCPU_ATTRS(sec) __typeof__(type) name; \
^~~~
>> drivers//xen/evtchn.c:438:9: note: in expansion of macro 'DEFINE_PER_CPU'
static DEFINE_PER_CPU(int, bind_last_selected_cpu);
^~~~~~~~~~~~~~
--
In file included from include/asm-generic/percpu.h:6:0,
from arch/x86/include/asm/percpu.h:542,
from arch/x86/include/asm/preempt.h:5,
from include/linux/preempt.h:80,
from include/linux/spinlock.h:50,
from include/linux/seqlock.h:35,
from include/linux/time.h:5,
from include/linux/stat.h:18,
from include/linux/module.h:10,
from drivers/xen/evtchn.c:36:
drivers/xen/evtchn.c: In function 'evtchn_bind_interdom_next_vcpu':
include/linux/percpu-defs.h:91:33: error: section attribute cannot be specified for local variables
extern __PCPU_DUMMY_ATTRS char __pcpu_unique_##name; \
^
include/linux/percpu-defs.h:116:2: note: in expansion of macro 'DEFINE_PER_CPU_SECTION'
DEFINE_PER_CPU_SECTION(type, name, "")
^~~~~~~~~~~~~~~~~~~~~~
drivers/xen/evtchn.c:438:9: note: in expansion of macro 'DEFINE_PER_CPU'
static DEFINE_PER_CPU(int, bind_last_selected_cpu);
^~~~~~~~~~~~~~
include/linux/percpu-defs.h:92:26: error: section attribute cannot be specified for local variables
__PCPU_DUMMY_ATTRS char __pcpu_unique_##name; \
^
include/linux/percpu-defs.h:116:2: note: in expansion of macro 'DEFINE_PER_CPU_SECTION'
DEFINE_PER_CPU_SECTION(type, name, "")
^~~~~~~~~~~~~~~~~~~~~~
drivers/xen/evtchn.c:438:9: note: in expansion of macro 'DEFINE_PER_CPU'
static DEFINE_PER_CPU(int, bind_last_selected_cpu);
^~~~~~~~~~~~~~
>> include/linux/percpu-defs.h:92:26: error: declaration of '__pcpu_unique_bind_last_selected_cpu' with no linkage follows extern declaration
__PCPU_DUMMY_ATTRS char __pcpu_unique_##name; \
^
include/linux/percpu-defs.h:116:2: note: in expansion of macro 'DEFINE_PER_CPU_SECTION'
DEFINE_PER_CPU_SECTION(type, name, "")
^~~~~~~~~~~~~~~~~~~~~~
drivers/xen/evtchn.c:438:9: note: in expansion of macro 'DEFINE_PER_CPU'
static DEFINE_PER_CPU(int, bind_last_selected_cpu);
^~~~~~~~~~~~~~
include/linux/percpu-defs.h:91:33: note: previous declaration of '__pcpu_unique_bind_last_selected_cpu' was here
extern __PCPU_DUMMY_ATTRS char __pcpu_unique_##name; \
^
include/linux/percpu-defs.h:116:2: note: in expansion of macro 'DEFINE_PER_CPU_SECTION'
DEFINE_PER_CPU_SECTION(type, name, "")
^~~~~~~~~~~~~~~~~~~~~~
drivers/xen/evtchn.c:438:9: note: in expansion of macro 'DEFINE_PER_CPU'
static DEFINE_PER_CPU(int, bind_last_selected_cpu);
^~~~~~~~~~~~~~
drivers/xen/evtchn.c:438:29: error: section attribute cannot be specified for local variables
static DEFINE_PER_CPU(int, bind_last_selected_cpu);
^
include/linux/percpu-defs.h:93:44: note: in definition of macro 'DEFINE_PER_CPU_SECTION'
extern __PCPU_ATTRS(sec) __typeof__(type) name; \
^~~~
drivers/xen/evtchn.c:438:9: note: in expansion of macro 'DEFINE_PER_CPU'
static DEFINE_PER_CPU(int, bind_last_selected_cpu);
^~~~~~~~~~~~~~
drivers/xen/evtchn.c:438:29: error: section attribute cannot be specified for local variables
static DEFINE_PER_CPU(int, bind_last_selected_cpu);
^
include/linux/percpu-defs.h:95:19: note: in definition of macro 'DEFINE_PER_CPU_SECTION'
__typeof__(type) name
^~~~
drivers/xen/evtchn.c:438:9: note: in expansion of macro 'DEFINE_PER_CPU'
static DEFINE_PER_CPU(int, bind_last_selected_cpu);
^~~~~~~~~~~~~~
drivers/xen/evtchn.c:438:29: error: weak declaration of 'bind_last_selected_cpu' must be public
static DEFINE_PER_CPU(int, bind_last_selected_cpu);
^
include/linux/percpu-defs.h:95:19: note: in definition of macro 'DEFINE_PER_CPU_SECTION'
__typeof__(type) name
^~~~
drivers/xen/evtchn.c:438:9: note: in expansion of macro 'DEFINE_PER_CPU'
static DEFINE_PER_CPU(int, bind_last_selected_cpu);
^~~~~~~~~~~~~~
drivers/xen/evtchn.c:438:29: error: declaration of 'bind_last_selected_cpu' with no linkage follows extern declaration
static DEFINE_PER_CPU(int, bind_last_selected_cpu);
^
include/linux/percpu-defs.h:95:19: note: in definition of macro 'DEFINE_PER_CPU_SECTION'
__typeof__(type) name
^~~~
drivers/xen/evtchn.c:438:9: note: in expansion of macro 'DEFINE_PER_CPU'
static DEFINE_PER_CPU(int, bind_last_selected_cpu);
^~~~~~~~~~~~~~
drivers/xen/evtchn.c:438:29: note: previous declaration of 'bind_last_selected_cpu' was here
static DEFINE_PER_CPU(int, bind_last_selected_cpu);
^
include/linux/percpu-defs.h:93:44: note: in definition of macro 'DEFINE_PER_CPU_SECTION'
extern __PCPU_ATTRS(sec) __typeof__(type) name; \
^~~~
drivers/xen/evtchn.c:438:9: note: in expansion of macro 'DEFINE_PER_CPU'
static DEFINE_PER_CPU(int, bind_last_selected_cpu);
^~~~~~~~~~~~~~
vim +/bind_last_selected_cpu +438 drivers//xen/evtchn.c
432
433 del_evtchn(u, evtchn);
434 }
435
436 static void evtchn_bind_interdom_next_vcpu(int evtchn)
437 {
> 438 static DEFINE_PER_CPU(int, bind_last_selected_cpu);
439 unsigned int selected_cpu, irq;
440 struct irq_desc *desc;
441 unsigned long flags;
---
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