tree: git://people.freedesktop.org/~agd5f/linux.git amd-staging-drm-next
head: dcae401d111324489c066aa57ed9c77b97b475f9
commit: 18c073719186a393b41715686cf95175c58919df [1046/1053] drm/amd: Closed hash table with low overhead
config: i386-allyesconfig (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
git checkout 18c073719186a393b41715686cf95175c58919df
# save the attached .config to linux build tree
make ARCH=i386
All warnings (new ones prefixed by >>):
drivers/gpu//drm/amd/lib/chash.c: In function 'chash_iter_relocate':
>> drivers/gpu//drm/amd/lib/chash.c:213:51: warning: self-comparison always evaluates to false [-Wtautological-compare]
BUG_ON(src.table->key_size != src.table->key_size);
^~
drivers/gpu//drm/amd/lib/chash.c:214:53: warning: self-comparison always evaluates to false [-Wtautological-compare]
BUG_ON(src.table->value_size != src.table->value_size);
^~
vim +213 drivers/gpu//drm/amd/lib/chash.c
209
210 static void chash_iter_relocate(struct chash_iter dst, struct chash_iter src)
211 {
212 BUG_ON(src.table == dst.table && src.slot == dst.slot);
> 213 BUG_ON(src.table->key_size != src.table->key_size);
214 BUG_ON(src.table->value_size != src.table->value_size);
215
216 if (dst.table->key_size == 4)
217 dst.table->keys32[dst.slot] = src.table->keys32[src.slot];
218 else
219 dst.table->keys64[dst.slot] = src.table->keys64[src.slot];
220
221 if (dst.table->value_size)
222 memcpy(chash_iter_value(dst), chash_iter_value(src),
223 dst.table->value_size);
224
225 chash_iter_set_valid(dst);
226 chash_iter_set_invalid(src);
227
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
Attachment:
.config.gz
Description: application/gzip
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