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SubjectRe: [PATCH v5 1/2] fs/proc: optimize register ctl_tables
Hi Meng,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on mcgrof/sysctl-next]
[also build test WARNING on jack-fs/fsnotify rostedt-trace/for-next kees/for-next/pstore linus/master v5.17-rc7 next-20220308]
[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/Meng-Tang/fs-proc-optimize-register-ctl_tables/20220307-150704
base: https://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux.git sysctl-next
config: um-i386_defconfig (https://download.01.org/0day-ci/archive/20220308/202203081905.IbWENTfU-lkp@intel.com/config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
# https://github.com/0day-ci/linux/commit/1c32e4182bcc38ac7cf4385267fa8b4ca2d7d97a
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Meng-Tang/fs-proc-optimize-register-ctl_tables/20220307-150704
git checkout 1c32e4182bcc38ac7cf4385267fa8b4ca2d7d97a
# save the config file to linux build tree
mkdir build_dir
make W=1 O=build_dir ARCH=um SUBARCH=i386 SHELL=/bin/bash fs/proc/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

>> fs/proc/proc_sysctl.c:1442: warning: expecting prototype for register_sysctl(). Prototype was for register_sysctl_with_num() instead


vim +1442 fs/proc/proc_sysctl.c

1f87f0b52b1d65 Eric W. Biederman 2012-01-06 1428
fea478d4101a42 Eric W. Biederman 2012-01-20 1429 /**
fea478d4101a42 Eric W. Biederman 2012-01-20 1430 * register_sysctl - register a sysctl table
fea478d4101a42 Eric W. Biederman 2012-01-20 1431 * @path: The path to the directory the sysctl table is in.
fea478d4101a42 Eric W. Biederman 2012-01-20 1432 * @table: the table structure
1c32e4182bcc38 Meng Tang 2022-03-04 1433 * @register_by_num: register single one and table must be without child
fea478d4101a42 Eric W. Biederman 2012-01-20 1434 *
fea478d4101a42 Eric W. Biederman 2012-01-20 1435 * Register a sysctl table. @table should be a filled in ctl_table
fea478d4101a42 Eric W. Biederman 2012-01-20 1436 * array. A completely 0 filled entry terminates the table.
fea478d4101a42 Eric W. Biederman 2012-01-20 1437 *
fea478d4101a42 Eric W. Biederman 2012-01-20 1438 * See __register_sysctl_table for more details.
fea478d4101a42 Eric W. Biederman 2012-01-20 1439 */
1c32e4182bcc38 Meng Tang 2022-03-04 1440 struct ctl_table_header *register_sysctl_with_num(const char *path,
1c32e4182bcc38 Meng Tang 2022-03-04 1441 struct ctl_table *table, int register_by_num)
fea478d4101a42 Eric W. Biederman 2012-01-20 @1442 {
1c32e4182bcc38 Meng Tang 2022-03-04 1443 return __register_sysctl_table_with_num(&sysctl_table_root.default_set,
1c32e4182bcc38 Meng Tang 2022-03-04 1444 path, table, register_by_num);
fea478d4101a42 Eric W. Biederman 2012-01-20 1445 }
1c32e4182bcc38 Meng Tang 2022-03-04 1446 EXPORT_SYMBOL(register_sysctl_with_num);
fea478d4101a42 Eric W. Biederman 2012-01-20 1447

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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