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: ia64-allyesconfig (attached as .config)
compiler: ia64-linux-gcc (GCC) 6.2.0
reproduce:
wget
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O
~/bin/make.cross
chmod +x ~/bin/make.cross
git checkout 18c073719186a393b41715686cf95175c58919df
# save the attached .config to linux build tree
make.cross ARCH=ia64
All error/warnings (new ones prefixed by >>):
In file included from drivers/gpu//drm/amd/lib/chash.c:30:0:
drivers/gpu//drm/amd/lib/../include/linux/chash.h: In function
'chash_iter_is_valid':
>> drivers/gpu//drm/amd/lib/../include/linux/chash.h:286:50: error:
>> '_BITOPS_LONG_SHIFT' undeclared (first use in this function)
return !!(iter.table->valid_bitmap[iter.slot >> _BITOPS_LONG_SHIFT] &
^~~~~~~~~~~~~~~~~~
drivers/gpu//drm/amd/lib/../include/linux/chash.h:286:50: note: each
undeclared identifier is reported only once for each function it appears in
drivers/gpu//drm/amd/lib/../include/linux/chash.h: In function
'chash_iter_is_empty':
drivers/gpu//drm/amd/lib/../include/linux/chash.h:292:49: error:
'_BITOPS_LONG_SHIFT' undeclared (first use in this function)
return !(iter.table->occup_bitmap[iter.slot >> _BITOPS_LONG_SHIFT] &
^~~~~~~~~~~~~~~~~~
drivers/gpu//drm/amd/lib/../include/linux/chash.h: In function
'chash_iter_set_valid':
drivers/gpu//drm/amd/lib/../include/linux/chash.h:299:40: error:
'_BITOPS_LONG_SHIFT' undeclared (first use in this function)
iter.table->valid_bitmap[iter.slot >> _BITOPS_LONG_SHIFT] |= iter.mask;
^~~~~~~~~~~~~~~~~~
drivers/gpu//drm/amd/lib/../include/linux/chash.h: In function
'chash_iter_set_invalid':
drivers/gpu//drm/amd/lib/../include/linux/chash.h:305:40: error:
'_BITOPS_LONG_SHIFT' undeclared (first use in this function)
iter.table->valid_bitmap[iter.slot >> _BITOPS_LONG_SHIFT] &= ~iter.mask;
^~~~~~~~~~~~~~~~~~
drivers/gpu//drm/amd/lib/../include/linux/chash.h: In function
'chash_iter_set_empty':
drivers/gpu//drm/amd/lib/../include/linux/chash.h:310:40: error:
'_BITOPS_LONG_SHIFT' undeclared (first use in this function)
iter.table->occup_bitmap[iter.slot >> _BITOPS_LONG_SHIFT] &= ~iter.mask;
^~~~~~~~~~~~~~~~~~
drivers/gpu//drm/amd/lib/../include/linux/chash.h: In function
'chash_iter_is_valid':
>> drivers/gpu//drm/amd/lib/../include/linux/chash.h:288:1: warning: control
>> reaches end of non-void function [-Wreturn-type]
}
^
drivers/gpu//drm/amd/lib/../include/linux/chash.h: In function
'chash_iter_is_empty':
drivers/gpu//drm/amd/lib/../include/linux/chash.h:294:1: warning: control
reaches end of non-void function [-Wreturn-type]
}
^
vim +/_BITOPS_LONG_SHIFT +286 drivers/gpu//drm/amd/lib/../include/linux/chash.h
252
253 /**
254 * CHASH_ITER_INIT - Initialize a hash table iterator
255 * @tbl: Pointer to hash table to iterate over
256 * @s: Initial slot number
257 */
258 #define CHASH_ITER_INIT(table, s) { \
259 table, \
260 1UL << ((s) & (BITS_PER_LONG - 1)), \
261 s \
262 }
263 /**
264 * CHASH_ITER_SET - Set hash table iterator to new slot
265 * @iter: Iterator
266 * @s: Slot number
267 */
268 #define CHASH_ITER_SET(iter, s) \
269 (iter).mask = 1UL << ((s) & (BITS_PER_LONG - 1)), \
270 (iter).slot = (s)
271 /**
272 * CHASH_ITER_INC - Increment hash table iterator
273 * @table: Hash table to iterate over
274 *
275 * Wraps around at the end.
276 */
277 #define CHASH_ITER_INC(iter) do {
\
278 (iter).mask = (iter).mask << 1 |
\
279 (iter).mask >> (BITS_PER_LONG - 1);
\
280 (iter).slot = ((iter).slot + 1) &
(iter).table->size_mask; \
281 } while (0)
282
283 static inline bool chash_iter_is_valid(const struct chash_iter iter)
284 {
285 BUG_ON((unsigned)iter.slot >= (1 << iter.table->bits));
> 286 return !!(iter.table->valid_bitmap[iter.slot >>
> _BITOPS_LONG_SHIFT] &
287 iter.mask);
> 288 }
289 static inline bool chash_iter_is_empty(const struct chash_iter iter)
290 {
291 BUG_ON((unsigned)iter.slot >= (1 << iter.table->bits));
292 return !(iter.table->occup_bitmap[iter.slot >>
_BITOPS_LONG_SHIFT] &
293 iter.mask);
294 }
295
296 static inline void chash_iter_set_valid(const struct chash_iter iter)
297 {
298 BUG_ON((unsigned)iter.slot >= (1 << iter.table->bits));
299 iter.table->valid_bitmap[iter.slot >> _BITOPS_LONG_SHIFT] |=
iter.mask;
300 iter.table->occup_bitmap[iter.slot >> _BITOPS_LONG_SHIFT] |=
iter.mask;
301 }
302 static inline void chash_iter_set_invalid(const struct chash_iter iter)
303 {
304 BUG_ON((unsigned)iter.slot >= (1 << iter.table->bits));
> 305 iter.table->valid_bitmap[iter.slot >> _BITOPS_LONG_SHIFT] &=
> ~iter.mask;
306 }
307 static inline void chash_iter_set_empty(const struct chash_iter iter)
308 {
309 BUG_ON((unsigned)iter.slot >= (1 << iter.table->bits));
310 iter.table->occup_bitmap[iter.slot >> _BITOPS_LONG_SHIFT] &=
~iter.mask;
311 }
312
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
.config.gz
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