[PATCH v3 3/3] printk: use the lockless ringbuffer

kernel test robot lkp at intel.com
Thu Jun 18 14:23:22 EDT 2020

Hi John,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on linux/master]
[also build test WARNING on linus/master v5.8-rc1 next-20200618]
[cannot apply to pmladek/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  as documented in

url:    https://github.com/0day-ci/linux/commits/John-Ogness/printk-replace-ringbuffer/20200618-225239
base:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 1b5044021070efa3259f3e9548dc35d1eb6aa844
config: x86_64-randconfig-s021-20200618 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-13) 9.3.0
        # apt-get install sparse
        # sparse version: v0.6.2-rc1-10-gc17b1b06-dirty
        # save the attached .config to linux build tree
        make W=1 C=1 ARCH=x86_64 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__'

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

sparse warnings: (new ones prefixed by >>)

   kernel/printk/printk.c:397:1: sparse: sparse: symbol 'log_wait' was not declared. Should it be static?
>> kernel/printk/printk.c:437:1: sparse: sparse: symbol '_printk_rb_static_dict' was not declared. Should it be static?

Please review and possibly fold the followup patch.

0-DAY CI Kernel Test Service, Intel Corporation
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