From: kernel test robot <lkp@intel.com>
To: Kuan-Wei Chiu <visitorckw@gmail.com>
Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev
Subject: Re: [PATCH v5 1/2] lib/test_bitops: Add benchmark test for fns()
Date: Fri, 3 May 2024 08:49:00 +0800 [thread overview]
Message-ID: <202405030808.UsoMKFNP-lkp@intel.com> (raw)
In-Reply-To: <20240502092443.6845-2-visitorckw@gmail.com>
Hi Kuan-Wei,
kernel test robot noticed the following build errors:
[auto build test ERROR on linus/master]
[also build test ERROR on v6.9-rc6 next-20240502]
[cannot apply to akpm-mm/mm-everything akpm-mm/mm-nonmm-unstable]
[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#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Kuan-Wei-Chiu/lib-test_bitops-Add-benchmark-test-for-fns/20240502-172638
base: linus/master
patch link: https://lore.kernel.org/r/20240502092443.6845-2-visitorckw%40gmail.com
patch subject: [PATCH v5 1/2] lib/test_bitops: Add benchmark test for fns()
config: x86_64-allyesconfig (https://download.01.org/0day-ci/archive/20240503/202405030808.UsoMKFNP-lkp@intel.com/config)
compiler: clang version 18.1.4 (https://github.com/llvm/llvm-project e6c3289804a67ea0bb6a86fadbe454dd93b8d855)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240503/202405030808.UsoMKFNP-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202405030808.UsoMKFNP-lkp@intel.com/
All errors (new ones prefixed by >>):
>> lib/test_bitops.c:56:39: error: variable 'tmp' set but not used [-Werror,-Wunused-but-set-variable]
56 | static volatile __used unsigned long tmp __initdata;
| ^
1 error generated.
vim +/tmp +56 lib/test_bitops.c
52
53 static int __init test_fns(void)
54 {
55 static unsigned long buf[10000] __initdata;
> 56 static volatile __used unsigned long tmp __initdata;
57 unsigned int i, n;
58 ktime_t time;
59
60 get_random_bytes(buf, sizeof(buf));
61 time = ktime_get();
62
63 for (n = 0; n < BITS_PER_LONG; n++)
64 for (i = 0; i < 10000; i++)
65 tmp = fns(buf[i], n);
66
67 time = ktime_get() - time;
68 pr_err("fns: %18llu ns\n", time);
69
70 return 0;
71 }
72
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
next parent reply other threads:[~2024-05-03 0:49 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20240502092443.6845-2-visitorckw@gmail.com>
2024-05-03 0:49 ` kernel test robot [this message]
2024-05-03 1:34 ` [PATCH v5 1/2] lib/test_bitops: Add benchmark test for fns() Kuan-Wei Chiu
2024-05-03 4:17 ` Nathan Chancellor
2024-05-03 7:31 ` Kuan-Wei Chiu
2024-05-03 7:38 ` Kuan-Wei Chiu
2024-05-03 15:54 ` Nathan Chancellor
2024-05-03 21:55 ` Yury Norov
2024-05-03 22:23 ` Nathan Chancellor
2024-05-05 10:42 ` Miguel Ojeda
2024-05-06 17:52 ` Nathan Chancellor
2024-05-06 18:08 ` Miguel Ojeda
2024-05-06 22:47 ` Yury Norov
2024-05-07 14:19 ` Nathan Chancellor
2024-05-05 10:42 ` Miguel Ojeda
2024-05-06 17:56 ` Nathan Chancellor
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=202405030808.UsoMKFNP-lkp@intel.com \
--to=lkp@intel.com \
--cc=llvm@lists.linux.dev \
--cc=oe-kbuild-all@lists.linux.dev \
--cc=visitorckw@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).