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SubjectRe: [PATCH v2] tracing/cfi: Fix cmp_entries_* functions signature mismatch
Hi Kalesh,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on 348949d9a4440abdab3b1dc99a9bb660e8c7da7c]

url: https://github.com/0day-ci/linux/commits/Kalesh-Singh/tracing-cfi-Fix-cmp_entries_-functions-signature-mismatch/20211014-093824
base: 348949d9a4440abdab3b1dc99a9bb660e8c7da7c
config: arm64-randconfig-r005-20211014 (attached as .config)
compiler: aarch64-linux-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/aca9efb61e0559ff7abff8c8bce5e1a65a73ccce
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Kalesh-Singh/tracing-cfi-Fix-cmp_entries_-functions-signature-mismatch/20211014-093824
git checkout aca9efb61e0559ff7abff8c8bce5e1a65a73ccce
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=arm64

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 >>):

kernel/trace/tracing_map.c: In function 'cmp_entries_dup':
>> kernel/trace/tracing_map.c:839:52: warning: initialization discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
839 | const struct tracing_map_sort_entry **pa = A;
| ^
kernel/trace/tracing_map.c:840:52: warning: initialization discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
840 | const struct tracing_map_sort_entry **pb = B;
| ^
kernel/trace/tracing_map.c: In function 'cmp_entries_sum':
kernel/trace/tracing_map.c:853:52: warning: initialization discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
853 | const struct tracing_map_sort_entry **pa = A;
| ^
kernel/trace/tracing_map.c:854:52: warning: initialization discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
854 | const struct tracing_map_sort_entry **pb = B;
| ^
kernel/trace/tracing_map.c: In function 'cmp_entries_key':
kernel/trace/tracing_map.c:884:52: warning: initialization discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
884 | const struct tracing_map_sort_entry **pa = A;
| ^
kernel/trace/tracing_map.c:885:52: warning: initialization discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
885 | const struct tracing_map_sort_entry **pb = B;
| ^


vim +/const +839 kernel/trace/tracing_map.c

836
837 static int cmp_entries_dup(const void *A, const void *B)
838 {
> 839 const struct tracing_map_sort_entry **pa = A;
840 const struct tracing_map_sort_entry **pb = B;
841 const struct tracing_map_sort_entry *a = *pa;
842 const struct tracing_map_sort_entry *b = *pb;
843 int ret = 0;
844
845 if (memcmp(a->key, b->key, a->elt->map->key_size))
846 ret = 1;
847
848 return ret;
849 }
850

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