Re: [PATCH] mm: workingset: judge cross-memcg refaults by generation age
From: kernel test robot
Date: Wed Aug 26 2026 - 12:28:30 EST
Hi zhaoyang.huang,
kernel test robot noticed the following build errors:
[auto build test ERROR on akpm-mm/mm-everything]
url: https://github.com/intel-lab-lkp/linux/commits/zhaoyang-huang/mm-workingset-judge-cross-memcg-refaults-by-generation-age/20260826-155133
base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
patch link: https://lore.kernel.org/r/20260826075133.751049-1-zhaoyang.huang%40unisoc.com
patch subject: [PATCH] mm: workingset: judge cross-memcg refaults by generation age
config: csky-allmodconfig (https://download.01.org/0day-ci/archive/20260827/202608270037.JUsg3wm5-lkp@xxxxxxxxx/config)
compiler: csky-linux-gcc (GCC) 16.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260827/202608270037.JUsg3wm5-lkp@xxxxxxxxx/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@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202608270037.JUsg3wm5-lkp@xxxxxxxxx/
All errors (new ones prefixed by >>):
In file included from <command-line>:
In function 'lru_gen_eviction',
inlined from 'workingset_eviction' at mm/workingset.c:459:10:
>> include/linux/compiler_types.h:702:45: error: call to '__compiletime_assert_649' declared with attribute error: BUILD_BUG_ON failed: EVICT_TS_WIDTH <= 0
702 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^
include/linux/compiler_types.h:683:25: note: in definition of macro '__compiletime_assert'
683 | prefix ## suffix(); \
| ^~~~~~
include/linux/compiler_types.h:702:9: note: in expansion of macro '_compiletime_assert'
702 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^~~~~~~~~~~~~~~~~~~
include/linux/build_bug.h:40:37: note: in expansion of macro 'compiletime_assert'
40 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
| ^~~~~~~~~~~~~~~~~~
include/linux/build_bug.h:51:9: note: in expansion of macro 'BUILD_BUG_ON_MSG'
51 | BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
| ^~~~~~~~~~~~~~~~
mm/workingset.c:275:9: note: in expansion of macro 'BUILD_BUG_ON'
275 | BUILD_BUG_ON(EVICT_TS_WIDTH <= 0);
| ^~~~~~~~~~~~
vim +/__compiletime_assert_649 +702 include/linux/compiler_types.h
eb5c2d4b45e3d2d Will Deacon 2020-07-21 688
eb5c2d4b45e3d2d Will Deacon 2020-07-21 689 #define _compiletime_assert(condition, msg, prefix, suffix) \
eb5c2d4b45e3d2d Will Deacon 2020-07-21 690 __compiletime_assert(condition, msg, prefix, suffix)
eb5c2d4b45e3d2d Will Deacon 2020-07-21 691
eb5c2d4b45e3d2d Will Deacon 2020-07-21 692 /**
eb5c2d4b45e3d2d Will Deacon 2020-07-21 693 * compiletime_assert - break build and emit msg if condition is false
eb5c2d4b45e3d2d Will Deacon 2020-07-21 694 * @condition: a compile-time constant condition to check
eb5c2d4b45e3d2d Will Deacon 2020-07-21 695 * @msg: a message to emit if condition is false
eb5c2d4b45e3d2d Will Deacon 2020-07-21 696 *
eb5c2d4b45e3d2d Will Deacon 2020-07-21 697 * In tradition of POSIX assert, this macro will break the build if the
eb5c2d4b45e3d2d Will Deacon 2020-07-21 698 * supplied condition is *false*, emitting the supplied error message if the
eb5c2d4b45e3d2d Will Deacon 2020-07-21 699 * compiler has support to do so.
eb5c2d4b45e3d2d Will Deacon 2020-07-21 700 */
eb5c2d4b45e3d2d Will Deacon 2020-07-21 701 #define compiletime_assert(condition, msg) \
eb5c2d4b45e3d2d Will Deacon 2020-07-21 @702 _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
eb5c2d4b45e3d2d Will Deacon 2020-07-21 703
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