* [peterz-queue:sched/flat 21/21] include/linux/compiler.h:168:17: error: '__UNIQUE_ID_y__822' undeclared; did you mean '__UNIQUE_ID_x__821'?
@ 2026-03-20 9:12 kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2026-03-20 9:12 UTC (permalink / raw)
To: Peter Zijlstra (Intel); +Cc: oe-kbuild-all
tree: https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git sched/flat
head: 4974c93ce402d69988eb7b2e9e490c22cc22bb7b
commit: 4974c93ce402d69988eb7b2e9e490c22cc22bb7b [21/21] sched/eevdf: Move to a single runqueue
config: arm64-allnoconfig (https://download.01.org/0day-ci/archive/20260320/202603201735.Kxf5XOSV-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 15.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260320/202603201735.Kxf5XOSV-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202603201735.Kxf5XOSV-lkp@intel.com/
All errors (new ones prefixed by >>):
In file included from include/linux/nodemask.h:92,
from include/linux/numa.h:6,
from include/linux/cpumask.h:15,
from include/linux/energy_model.h:4,
from kernel/sched/fair.c:23:
kernel/sched/fair.c: In function '__calc_prop_weight':
kernel/sched/fair.c:4066:28: error: 'MIN_SHARES' undeclared (first use in this function)
4066 | return max(weight, MIN_SHARES);
| ^~~~~~~~~~
include/linux/minmax.h:92:35: note: in definition of macro '__careful_cmp_once'
92 | auto ux = (x); auto uy = (y); \
| ^
include/linux/minmax.h:112:25: note: in expansion of macro '__careful_cmp'
112 | #define max(x, y) __careful_cmp(max, x, y)
| ^~~~~~~~~~~~~
kernel/sched/fair.c:4066:16: note: in expansion of macro 'max'
4066 | return max(weight, MIN_SHARES);
| ^~~
kernel/sched/fair.c:4066:28: note: each undeclared identifier is reported only once for each function it appears in
4066 | return max(weight, MIN_SHARES);
| ^~~~~~~~~~
include/linux/minmax.h:92:35: note: in definition of macro '__careful_cmp_once'
92 | auto ux = (x); auto uy = (y); \
| ^
include/linux/minmax.h:112:25: note: in expansion of macro '__careful_cmp'
112 | #define max(x, y) __careful_cmp(max, x, y)
| ^~~~~~~~~~~~~
kernel/sched/fair.c:4066:16: note: in expansion of macro 'max'
4066 | return max(weight, MIN_SHARES);
| ^~~
In file included from <command-line>:
>> include/linux/compiler.h:168:17: error: '__UNIQUE_ID_y__822' undeclared (first use in this function); did you mean '__UNIQUE_ID_x__821'?
168 | __PASTE(__UNIQUE_ID_, \
| ^~~~~~~~~~~~
include/linux/compiler_types.h:686:23: note: in definition of macro '__compiletime_assert'
686 | if (!(condition)) \
| ^~~~~~~~~
include/linux/compiler_types.h:706:9: note: in expansion of macro '_compiletime_assert'
706 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^~~~~~~~~~~~~~~~~~~
include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert'
39 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
| ^~~~~~~~~~~~~~~~~~
include/linux/minmax.h:93:9: note: in expansion of macro 'BUILD_BUG_ON_MSG'
93 | BUILD_BUG_ON_MSG(!__types_ok(ux, uy), \
| ^~~~~~~~~~~~~~~~
include/linux/minmax.h:49:25: note: in expansion of macro 'is_signed_type'
49 | #define __sign_use(ux) (is_signed_type(typeof(ux)) ? \
| ^~~~~~~~~~~~~~
include/linux/minmax.h:75:27: note: in expansion of macro '__sign_use'
75 | (__sign_use(ux) & __sign_use(uy))
| ^~~~~~~~~~
include/linux/minmax.h:93:27: note: in expansion of macro '__types_ok'
93 | BUILD_BUG_ON_MSG(!__types_ok(ux, uy), \
| ^~~~~~~~~~
include/linux/minmax.h:98:9: note: in expansion of macro '__careful_cmp_once'
98 | __careful_cmp_once(op, x, y, __UNIQUE_ID(x_), __UNIQUE_ID(y_))
| ^~~~~~~~~~~~~~~~~~
include/linux/compiler_types.h:16:23: note: in expansion of macro '___PASTE'
16 | #define __PASTE(a, b) ___PASTE(a, b)
| ^~~~~~~~
include/linux/compiler.h:168:9: note: in expansion of macro '__PASTE'
168 | __PASTE(__UNIQUE_ID_, \
| ^~~~~~~
include/linux/minmax.h:98:55: note: in expansion of macro '__UNIQUE_ID'
98 | __careful_cmp_once(op, x, y, __UNIQUE_ID(x_), __UNIQUE_ID(y_))
| ^~~~~~~~~~~
include/linux/minmax.h:112:25: note: in expansion of macro '__careful_cmp'
112 | #define max(x, y) __careful_cmp(max, x, y)
| ^~~~~~~~~~~~~
kernel/sched/fair.c:4066:16: note: in expansion of macro 'max'
4066 | return max(weight, MIN_SHARES);
| ^~~
vim +168 include/linux/compiler.h
fe8c8a126806fe Cesar Eduardo Barros 2013-11-25 165
afb026b6d35c79 Josh Poimboeuf 2025-09-17 166 /* Format: __UNIQUE_ID_<name>_<__COUNTER__> */
afb026b6d35c79 Josh Poimboeuf 2025-09-17 167 #define __UNIQUE_ID(name) \
afb026b6d35c79 Josh Poimboeuf 2025-09-17 @168 __PASTE(__UNIQUE_ID_, \
afb026b6d35c79 Josh Poimboeuf 2025-09-17 169 __PASTE(name, \
afb026b6d35c79 Josh Poimboeuf 2025-09-17 170 __PASTE(_, __COUNTER__)))
6f33d58794ef4c Rusty Russell 2012-11-22 171
:::::: The code at line 168 was first introduced by commit
:::::: afb026b6d35c79f6f47752147327932827aeac8c compiler: Tweak __UNIQUE_ID() naming
:::::: TO: Josh Poimboeuf <jpoimboe@kernel.org>
:::::: CC: Josh Poimboeuf <jpoimboe@kernel.org>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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