Re: [PATCH 5/7] genirq/affinity: move group_cpus_evenly() into lib/

kernel test robot
2021-08-14T17:16:30Z

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Hi Ming,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on tip/irq/core]
[also build test WARNING on next-20210813]
[cannot apply to block/for-next linux/master linus/master v5.14-rc5]
[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/Ming-Lei/genirq-affinity-abstract-new-API-from-managed-irq-affinity-spread/20210814-203741
base: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git 04c2721d3530f0723b4c922a8fa9f26b202a20de
config: arc-randconfig-r016-20210814 (attached as .config)
compiler: arc-elf-gcc (GCC) 11.2.0
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
# https://github.com/0day-ci/linux/commit/759f72186bfdd5c3ba8b53ac0749cf7ba930012c
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Ming-Lei/genirq-affinity-abstract-new-API-from-managed-irq-affinity-spread/20210814-203741
git checkout 759f72186bfdd5c3ba8b53ac0749cf7ba930012c
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=arc

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 >>):

>> lib/group_cpus.c:344:17: warning: no previous prototype for 'group_cpus_evenly' [-Wmissing-prototypes]
344 | struct cpumask *group_cpus_evenly(unsigned int numgrps)
| ^~~~~~~~~~~~~~~~~

vim +/group_cpus_evenly +344 lib/group_cpus.c

328
329 /**
330 * group_cpus_evenly - Group all CPUs evenly per NUMA/CPU locality
331 * @numgrps: number of groups
332 *
333 * Return: cpumask array if successful, NULL otherwise. And each element
334 * includes CPUs assigned to this group
335 *
336 * Try to put close CPUs from viewpoint of CPU and NUMA locality into
337 * same group, and run two-stage grouping:
338 * 1) allocate present CPUs on these groups evenly first
339 * 2) allocate other possible CPUs on these groups evenly
340 *
341 * We guarantee in the resulted grouping that all CPUs are covered, and
342 * no same CPU is assigned to different groups
343 */
> 344 struct cpumask *group_cpus_evenly(unsigned int numgrps)

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

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