[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <202005140638.RUuj4DvG%lkp@intel.com>
Date: Thu, 14 May 2020 06:16:24 +0800
From: kbuild test robot <lkp@...el.com>
To: Andrii Nakryiko <andriin@...com>, bpf@...r.kernel.org,
netdev@...r.kernel.org, ast@...com, daniel@...earbox.net
Cc: kbuild-all@...ts.01.org, andrii.nakryiko@...il.com,
kernel-team@...com, Andrii Nakryiko <andriin@...com>,
"Paul E . McKenney" <paulmck@...nel.org>,
Jonathan Lemon <jonathan.lemon@...il.com>
Subject: Re: [PATCH bpf-next 1/6] bpf: implement BPF ring buffer and verifier
support for it
Hi Andrii,
I love your patch! Perhaps something to improve:
[auto build test WARNING on bpf-next/master]
[also build test WARNING on next-20200512]
[cannot apply to bpf/master rcu/dev v5.7-rc5]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]
url: https://github.com/0day-ci/linux/commits/Andrii-Nakryiko/BPF-ring-buffer/20200514-032857
base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master
config: riscv-rv32_defconfig (attached as .config)
compiler: riscv32-linux-gcc (GCC) 9.3.0
reproduce:
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 GCC_VERSION=9.3.0 make.cross ARCH=riscv
If you fix the issue, kindly add following tag as appropriate
Reported-by: kbuild test robot <lkp@...el.com>
All warnings (new ones prefixed by >>):
In file included from include/linux/kernel.h:11,
from include/linux/list.h:9,
from include/linux/timer.h:5,
from include/linux/workqueue.h:9,
from include/linux/bpf.h:9,
from kernel/bpf/ringbuf.c:1:
kernel/bpf/ringbuf.c: In function 'bpf_ringbuf_commit':
include/linux/compiler.h:350:38: error: call to '__compiletime_assert_155' declared with attribute error: Need native word sized stores/loads for atomicity.
350 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^
include/linux/compiler.h:331:4: note: in definition of macro '__compiletime_assert'
331 | prefix ## suffix(); | ^~~~~~
include/linux/compiler.h:350:2: note: in expansion of macro '_compiletime_assert'
350 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^~~~~~~~~~~~~~~~~~~
include/linux/compiler.h:353:2: note: in expansion of macro 'compiletime_assert'
353 | compiletime_assert(__native_word(t), | ^~~~~~~~~~~~~~~~~~
>> arch/riscv/include/asm/barrier.h:40:2: note: in expansion of macro 'compiletime_assert_atomic_type'
40 | compiletime_assert_atomic_type(*p); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/asm-generic/barrier.h:157:29: note: in expansion of macro '__smp_load_acquire'
157 | #define smp_load_acquire(p) __smp_load_acquire(p)
| ^~~~~~~~~~~~~~~~~~
kernel/bpf/ringbuf.c:354:13: note: in expansion of macro 'smp_load_acquire'
354 | cons_pos = smp_load_acquire(&rb->consumer_pos) & rb->mask;
| ^~~~~~~~~~~~~~~~
vim +/compiletime_assert_atomic_type +40 arch/riscv/include/asm/barrier.h
8d235b174af5d0 Andrea Parri 2018-02-27 36
8d235b174af5d0 Andrea Parri 2018-02-27 37 #define __smp_load_acquire(p) \
8d235b174af5d0 Andrea Parri 2018-02-27 38 ({ \
8d235b174af5d0 Andrea Parri 2018-02-27 39 typeof(*p) ___p1 = READ_ONCE(*p); \
8d235b174af5d0 Andrea Parri 2018-02-27 @40 compiletime_assert_atomic_type(*p); \
8d235b174af5d0 Andrea Parri 2018-02-27 41 RISCV_FENCE(r,rw); \
8d235b174af5d0 Andrea Parri 2018-02-27 42 ___p1; \
8d235b174af5d0 Andrea Parri 2018-02-27 43 })
8d235b174af5d0 Andrea Parri 2018-02-27 44
:::::: The code at line 40 was first introduced by commit
:::::: 8d235b174af5d0af35ff206c15041fc2b02a0993 riscv/barrier: Define __smp_{store_release,load_acquire}
:::::: TO: Andrea Parri <parri.andrea@...il.com>
:::::: CC: Palmer Dabbelt <palmer@...ive.com>
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
Download attachment ".config.gz" of type "application/gzip" (18817 bytes)
Powered by blists - more mailing lists