On Mon, Nov 22, 2021 at 2:02 AM kernel test robot [off-list ref] wrote:

Hi Peter,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on cb0e52b7748737b2cf6481fdd9b920ce7e1ebbdf]

url:    https://github.com/0day-ci/linux/commits/Peter-Oskolkov/sched-mm-x86-uaccess-implement-User-Managed-Concurrency-Groups/20211122-052209
base:   cb0e52b7748737b2cf6481fdd9b920ce7e1ebbdf
config: x86_64-randconfig-c007-20211121 (attached as .config)
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/e455791cacec2b140558a717d2b8b07f5561a251
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Peter-Oskolkov/sched-mm-x86-uaccess-implement-User-Managed-Concurrency-Groups/20211122-052209
        git checkout e455791cacec2b140558a717d2b8b07f5561a251
        # save the attached .config to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <redacted>

All errors (new ones prefixed by >>):

   In file included from <built-in>:1:

quoted

quoted

./usr/include/linux/umcg.h:80:2: error: unknown type name 'u64'

           u64     state_ts;               /* r/w */

I figured it out - lkp manages to compile uapi so that it sees
__u32/__u64 but not u32/u64. I'll make the change.

As __u64 is actually a different type from u64 (long unsigned int vs
long long unsigned int), I'll need to make corresponding changes in
other files to avoid warnings of "comparing different types" sort.

Why does the kernel have both __u64 and u64, and have them defined as
different types? (This is not really a question, just a complaint).

           ^

quoted

quoted

./usr/include/linux/umcg.h:91:2: error: unknown type name 'u32'

           u32     next_tid;               /* r   */
           ^
   ./usr/include/linux/umcg.h:93:2: error: unknown type name 'u32'
           u32     flags;                  /* Reserved; must be zero. */
           ^
   ./usr/include/linux/umcg.h:101:2: error: unknown type name 'u64'
           u64     idle_workers_ptr;       /* r/w */
           ^
   ./usr/include/linux/umcg.h:107:2: error: unknown type name 'u64'
           u64     idle_server_tid_ptr;    /* r   */
           ^
   5 errors generated.

---
0-DAY CI Kernel Test Service, Intel Corporation
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