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Date: Thu, 30 Jul 2020 16:11:52 +0800
From: kernel test robot <lkp@...el.com>
To: Nicholas Piggin <npiggin@...il.com>, linux-arch@...r.kernel.org
Cc: kbuild-all@...ts.01.org, Nicholas Piggin <npiggin@...il.com>,
linux-kernel@...r.kernel.org, linux-mm@...ck.org,
Arnd Bergmann <arnd@...db.de>,
Geert Uytterhoeven <geert@...ux-m68k.org>,
linux-m68k@...ts.linux-m68k.org
Subject: Re: [PATCH 09/24] m68k: use asm-generic/mmu_context.h for no-op
implementations
Hi Nicholas,
I love your patch! Yet something to improve:
[auto build test ERROR on openrisc/for-next]
[also build test ERROR on sparc-next/master sparc/master linus/master asm-generic/master v5.8-rc7 next-20200729]
[cannot apply to nios2/for-linus xtensa/for_next]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]
url: https://github.com/0day-ci/linux/commits/Nicholas-Piggin/Use-asm-generic-for-mmu_context-no-op-functions/20200728-113854
base: https://github.com/openrisc/linux.git for-next
config: m68k-randconfig-r005-20200729 (attached as .config)
compiler: m68k-linux-gcc (GCC) 9.3.0
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
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=m68k
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>
All errors (new ones prefixed by >>):
In file included from include/asm-generic/bug.h:5,
from arch/m68k/include/asm/bug.h:32,
from include/linux/bug.h:5,
from include/linux/thread_info.h:12,
from arch/m68k/include/asm/current.h:16,
from include/linux/sched.h:12,
from kernel//sched/sched.h:5,
from kernel//sched/core.c:9:
include/linux/scatterlist.h: In function 'sg_set_buf':
arch/m68k/include/asm/page_no.h:33:50: warning: ordered comparison of pointer with null pointer [-Wextra]
33 | #define virt_addr_valid(kaddr) (((void *)(kaddr) >= (void *)PAGE_OFFSET) && \
| ^~
include/linux/compiler.h:78:42: note: in definition of macro 'unlikely'
78 | # define unlikely(x) __builtin_expect(!!(x), 0)
| ^
include/linux/scatterlist.h:143:2: note: in expansion of macro 'BUG_ON'
143 | BUG_ON(!virt_addr_valid(buf));
| ^~~~~~
include/linux/scatterlist.h:143:10: note: in expansion of macro 'virt_addr_valid'
143 | BUG_ON(!virt_addr_valid(buf));
| ^~~~~~~~~~~~~~~
In file included from include/asm-generic/nommu_context.h:11,
from arch/m68k/include/asm/mmu_context.h:304,
from include/linux/mmu_context.h:5,
from kernel//sched/sched.h:54,
from kernel//sched/core.c:9:
include/asm-generic/mmu_context.h: In function 'activate_mm':
>> include/asm-generic/mmu_context.h:59:2: error: implicit declaration of function 'switch_mm' [-Werror=implicit-function-declaration]
59 | switch_mm(prev_mm, next_mm, current);
| ^~~~~~~~~
In file included from arch/m68k/include/asm/mmu_context.h:304,
from include/linux/mmu_context.h:5,
from kernel//sched/sched.h:54,
from kernel//sched/core.c:9:
include/asm-generic/nommu_context.h: At top level:
include/asm-generic/nommu_context.h:13:20: warning: conflicting types for 'switch_mm'
13 | static inline void switch_mm(struct mm_struct *prev,
| ^~~~~~~~~
include/asm-generic/nommu_context.h:13:20: error: static declaration of 'switch_mm' follows non-static declaration
In file included from include/asm-generic/nommu_context.h:11,
from arch/m68k/include/asm/mmu_context.h:304,
from include/linux/mmu_context.h:5,
from kernel//sched/sched.h:54,
from kernel//sched/core.c:9:
include/asm-generic/mmu_context.h:59:2: note: previous implicit declaration of 'switch_mm' was here
59 | switch_mm(prev_mm, next_mm, current);
| ^~~~~~~~~
kernel//sched/core.c: In function 'ttwu_stat':
kernel//sched/core.c:2154:13: warning: variable 'rq' set but not used [-Wunused-but-set-variable]
2154 | struct rq *rq;
| ^~
cc1: some warnings being treated as errors
--
In file included from include/asm-generic/bug.h:5,
from arch/m68k/include/asm/bug.h:32,
from include/linux/bug.h:5,
from include/linux/thread_info.h:12,
from arch/m68k/include/asm/current.h:16,
from include/linux/sched.h:12,
from kernel//sched/sched.h:5,
from kernel//sched/loadavg.c:9:
include/linux/scatterlist.h: In function 'sg_set_buf':
arch/m68k/include/asm/page_no.h:33:50: warning: ordered comparison of pointer with null pointer [-Wextra]
33 | #define virt_addr_valid(kaddr) (((void *)(kaddr) >= (void *)PAGE_OFFSET) && \
| ^~
include/linux/compiler.h:78:42: note: in definition of macro 'unlikely'
78 | # define unlikely(x) __builtin_expect(!!(x), 0)
| ^
include/linux/scatterlist.h:143:2: note: in expansion of macro 'BUG_ON'
143 | BUG_ON(!virt_addr_valid(buf));
| ^~~~~~
include/linux/scatterlist.h:143:10: note: in expansion of macro 'virt_addr_valid'
143 | BUG_ON(!virt_addr_valid(buf));
| ^~~~~~~~~~~~~~~
In file included from include/asm-generic/nommu_context.h:11,
from arch/m68k/include/asm/mmu_context.h:304,
from include/linux/mmu_context.h:5,
from kernel//sched/sched.h:54,
from kernel//sched/loadavg.c:9:
include/asm-generic/mmu_context.h: In function 'activate_mm':
>> include/asm-generic/mmu_context.h:59:2: error: implicit declaration of function 'switch_mm' [-Werror=implicit-function-declaration]
59 | switch_mm(prev_mm, next_mm, current);
| ^~~~~~~~~
In file included from arch/m68k/include/asm/mmu_context.h:304,
from include/linux/mmu_context.h:5,
from kernel//sched/sched.h:54,
from kernel//sched/loadavg.c:9:
include/asm-generic/nommu_context.h: At top level:
include/asm-generic/nommu_context.h:13:20: warning: conflicting types for 'switch_mm'
13 | static inline void switch_mm(struct mm_struct *prev,
| ^~~~~~~~~
include/asm-generic/nommu_context.h:13:20: error: static declaration of 'switch_mm' follows non-static declaration
In file included from include/asm-generic/nommu_context.h:11,
from arch/m68k/include/asm/mmu_context.h:304,
from include/linux/mmu_context.h:5,
from kernel//sched/sched.h:54,
from kernel//sched/loadavg.c:9:
include/asm-generic/mmu_context.h:59:2: note: previous implicit declaration of 'switch_mm' was here
59 | switch_mm(prev_mm, next_mm, current);
| ^~~~~~~~~
cc1: some warnings being treated as errors
--
In file included from include/asm-generic/bug.h:5,
from arch/m68k/include/asm/bug.h:32,
from include/linux/bug.h:5,
from include/linux/thread_info.h:12,
from arch/m68k/include/asm/current.h:16,
from include/linux/sched.h:12,
from kernel//sched/sched.h:5,
from kernel//sched/rt.c:6:
include/linux/scatterlist.h: In function 'sg_set_buf':
arch/m68k/include/asm/page_no.h:33:50: warning: ordered comparison of pointer with null pointer [-Wextra]
33 | #define virt_addr_valid(kaddr) (((void *)(kaddr) >= (void *)PAGE_OFFSET) && \
| ^~
include/linux/compiler.h:78:42: note: in definition of macro 'unlikely'
78 | # define unlikely(x) __builtin_expect(!!(x), 0)
| ^
include/linux/scatterlist.h:143:2: note: in expansion of macro 'BUG_ON'
143 | BUG_ON(!virt_addr_valid(buf));
| ^~~~~~
include/linux/scatterlist.h:143:10: note: in expansion of macro 'virt_addr_valid'
143 | BUG_ON(!virt_addr_valid(buf));
| ^~~~~~~~~~~~~~~
In file included from include/asm-generic/nommu_context.h:11,
from arch/m68k/include/asm/mmu_context.h:304,
from include/linux/mmu_context.h:5,
from kernel//sched/sched.h:54,
from kernel//sched/rt.c:6:
include/asm-generic/mmu_context.h: In function 'activate_mm':
>> include/asm-generic/mmu_context.h:59:2: error: implicit declaration of function 'switch_mm' [-Werror=implicit-function-declaration]
59 | switch_mm(prev_mm, next_mm, current);
| ^~~~~~~~~
In file included from arch/m68k/include/asm/mmu_context.h:304,
from include/linux/mmu_context.h:5,
from kernel//sched/sched.h:54,
from kernel//sched/rt.c:6:
include/asm-generic/nommu_context.h: At top level:
include/asm-generic/nommu_context.h:13:20: warning: conflicting types for 'switch_mm'
13 | static inline void switch_mm(struct mm_struct *prev,
| ^~~~~~~~~
include/asm-generic/nommu_context.h:13:20: error: static declaration of 'switch_mm' follows non-static declaration
In file included from include/asm-generic/nommu_context.h:11,
from arch/m68k/include/asm/mmu_context.h:304,
from include/linux/mmu_context.h:5,
from kernel//sched/sched.h:54,
from kernel//sched/rt.c:6:
include/asm-generic/mmu_context.h:59:2: note: previous implicit declaration of 'switch_mm' was here
59 | switch_mm(prev_mm, next_mm, current);
| ^~~~~~~~~
kernel//sched/rt.c:668:6: warning: no previous prototype for 'sched_rt_bandwidth_account' [-Wmissing-prototypes]
668 | bool sched_rt_bandwidth_account(struct rt_rq *rt_rq)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~
cc1: some warnings being treated as errors
vim +/switch_mm +59 include/asm-generic/mmu_context.h
5c01b46bb6bb8f2 Arnd Bergmann 2009-05-13 49
49435c52fb90a3c Nicholas Piggin 2020-07-28 50 /**
49435c52fb90a3c Nicholas Piggin 2020-07-28 51 * activate_mm - called after exec switches the current task to a new mm, to switch to it
49435c52fb90a3c Nicholas Piggin 2020-07-28 52 * @prev_mm: previous mm of this task
49435c52fb90a3c Nicholas Piggin 2020-07-28 53 * @next_mm: new mm
49435c52fb90a3c Nicholas Piggin 2020-07-28 54 */
49435c52fb90a3c Nicholas Piggin 2020-07-28 55 #ifndef activate_mm
49435c52fb90a3c Nicholas Piggin 2020-07-28 56 static inline void activate_mm(struct mm_struct *prev_mm,
49435c52fb90a3c Nicholas Piggin 2020-07-28 57 struct mm_struct *next_mm)
5c01b46bb6bb8f2 Arnd Bergmann 2009-05-13 58 {
49435c52fb90a3c Nicholas Piggin 2020-07-28 @59 switch_mm(prev_mm, next_mm, current);
5c01b46bb6bb8f2 Arnd Bergmann 2009-05-13 60 }
49435c52fb90a3c Nicholas Piggin 2020-07-28 61 #endif
5c01b46bb6bb8f2 Arnd Bergmann 2009-05-13 62
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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