12:48 p.m.
Hi JianMin,
FYI, the error/warning still remains.
tree: https://android.googlesource.com/kernel/common android12-5.10-2021-09
head: cac628d5320f43641e9fb9285d972060b61ca2de
commit: 1efc36b815769cb8c7dae1d53373b190c017f5d1 [10732/10852] ANDROID: sched: add a
helper function to change PELT half-life
config: x86_64-randconfig-r033-20210928 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project
dc6e8dfdfe7efecfda318d43a06fae18b40eb498)
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
git remote add android-common https://android.googlesource.com/kernel/common
git fetch --no-tags android-common android12-5.10-2021-09
git checkout 1efc36b815769cb8c7dae1d53373b190c017f5d1
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=x86_64
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp(a)intel.com>
All warnings (new ones prefixed by >>):
> kernel/sched/pelt.c:35:5: warning: no previous prototype for
function 'get_pelt_halflife' [-Wmissing-prototypes]
int
get_pelt_halflife(void)
^
kernel/sched/pelt.c:35:1: note: declare 'static' if the function is not
intended to be used outside of this translation unit
int get_pelt_halflife(void)
^
static
> kernel/sched/pelt.c:68:5: warning: no previous prototype for
function 'set_pelt_halflife' [-Wmissing-prototypes]
int
set_pelt_halflife(int num)
^
kernel/sched/pelt.c:68:1: note: declare 'static' if the function is not
intended to be used outside of this translation unit
int set_pelt_halflife(int num)
^
static
2 warnings generated.
vim +/get_pelt_halflife +35 kernel/sched/pelt.c
34
35 int get_pelt_halflife(void)
36 {
37 return pelt_load_avg_period;
38 }
39 EXPORT_SYMBOL_GPL(get_pelt_halflife);
40
41 static int __set_pelt_halflife(void *data)
42 {
43 int rc = 0;
44 int num = *(int *)data;
45
46 switch (num) {
47 case PELT8_LOAD_AVG_PERIOD:
48 pelt_load_avg_period = PELT8_LOAD_AVG_PERIOD;
49 pelt_load_avg_max = PELT8_LOAD_AVG_MAX;
50 pelt_runnable_avg_yN_inv = pelt8_runnable_avg_yN_inv;
51 pr_info("PELT half life is set to %dms\n", num);
52 break;
53 case PELT32_LOAD_AVG_PERIOD:
54 pelt_load_avg_period = PELT32_LOAD_AVG_PERIOD;
55 pelt_load_avg_max = PELT32_LOAD_AVG_MAX;
56 pelt_runnable_avg_yN_inv = pelt32_runnable_avg_yN_inv;
57 pr_info("PELT half life is set to %dms\n", num);
58 break;
59 default:
60 rc = -EINVAL;
61 pr_err("Failed to set PELT half life to %dms, the current value is
%dms\n",
62 num, pelt_load_avg_period);
63 }
64
65 return rc;
66 }
67
68 int set_pelt_halflife(int num)
69 {
70 return stop_machine(__set_pelt_halflife, &num, NULL);
71 }
72 EXPORT_SYMBOL_GPL(set_pelt_halflife);
73
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org