tree: https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git dev.2023.05.08b
head: 46be07e0c635f84a3ce3a6d2d841785872bf59c9
commit: 46be07e0c635f84a3ce3a6d2d841785872bf59c9 [71/71] locking/atomic: Refrain from generating duplicate fallbacks
config: alpha-allyesconfig (https://download.01.org/0day-ci/archive/20230509/[email protected]/config)
compiler: alpha-linux-gcc (GCC) 12.1.0
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://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git/commit/?id=46be07e0c635f84a3ce3a6d2d841785872bf59c9
git remote add paulmck-rcu https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git
git fetch --no-tags paulmck-rcu dev.2023.05.08b
git checkout 46be07e0c635f84a3ce3a6d2d841785872bf59c9
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=alpha olddefconfig
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=alpha prepare
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <[email protected]>
| Link: https://lore.kernel.org/oe-kbuild-all/[email protected]/
All errors (new ones prefixed by >>):
scripts/genksyms/parse.y: warning: 9 shift/reduce conflicts [-Wconflicts-sr]
scripts/genksyms/parse.y: warning: 5 reduce/reduce conflicts [-Wconflicts-rr]
scripts/genksyms/parse.y: note: rerun with option '-Wcounterexamples' to generate conflict counterexamples
In file included from <command-line>:
>> include/linux/compiler_types.h:369:9: error: expected identifier or '(' before 'do'
369 | do { \
| ^~
include/linux/compiler_types.h:385:9: note: in expansion of macro '__compiletime_assert'
385 | __compiletime_assert(condition, msg, prefix, suffix)
| ^~~~~~~~~~~~~~~~~~~~
include/linux/compiler_types.h:397:9: note: in expansion of macro '_compiletime_assert'
397 | _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/build_bug.h:50:9: note: in expansion of macro 'BUILD_BUG_ON_MSG'
50 | BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
| ^~~~~~~~~~~~~~~~
include/linux/atomic/atomic-arch-fallback.h:1105:1: note: in expansion of macro 'BUILD_BUG_ON'
1105 | BUILD_BUG_ON(1) // Fallback acquire omitting duplicate arch_atomic_fetch_andnot_acquire().
| ^~~~~~~~~~~~
>> include/linux/compiler_types.h:379:11: error: expected identifier or '(' before 'while'
379 | } while (0)
| ^~~~~
include/linux/compiler_types.h:385:9: note: in expansion of macro '__compiletime_assert'
385 | __compiletime_assert(condition, msg, prefix, suffix)
| ^~~~~~~~~~~~~~~~~~~~
include/linux/compiler_types.h:397:9: note: in expansion of macro '_compiletime_assert'
397 | _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/build_bug.h:50:9: note: in expansion of macro 'BUILD_BUG_ON_MSG'
50 | BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
| ^~~~~~~~~~~~~~~~
include/linux/atomic/atomic-arch-fallback.h:1105:1: note: in expansion of macro 'BUILD_BUG_ON'
1105 | BUILD_BUG_ON(1) // Fallback acquire omitting duplicate arch_atomic_fetch_andnot_acquire().
| ^~~~~~~~~~~~
>> include/linux/compiler_types.h:379:11: error: expected identifier or '(' before 'while'
379 | } while (0)
| ^~~~~
include/linux/compiler_types.h:385:9: note: in expansion of macro '__compiletime_assert'
385 | __compiletime_assert(condition, msg, prefix, suffix)
| ^~~~~~~~~~~~~~~~~~~~
include/linux/compiler_types.h:397:9: note: in expansion of macro '_compiletime_assert'
397 | _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/build_bug.h:50:9: note: in expansion of macro 'BUILD_BUG_ON_MSG'
50 | BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
| ^~~~~~~~~~~~~~~~
include/linux/atomic/atomic-arch-fallback.h:1110:1: note: in expansion of macro 'BUILD_BUG_ON'
1110 | BUILD_BUG_ON(1) // Fallback release omitting duplicate arch_atomic_fetch_andnot_release().
| ^~~~~~~~~~~~
>> include/linux/compiler_types.h:379:11: error: expected identifier or '(' before 'while'
379 | } while (0)
| ^~~~~
include/linux/compiler_types.h:385:9: note: in expansion of macro '__compiletime_assert'
385 | __compiletime_assert(condition, msg, prefix, suffix)
| ^~~~~~~~~~~~~~~~~~~~
include/linux/compiler_types.h:397:9: note: in expansion of macro '_compiletime_assert'
397 | _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/build_bug.h:50:9: note: in expansion of macro 'BUILD_BUG_ON_MSG'
50 | BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
| ^~~~~~~~~~~~~~~~
include/linux/atomic/atomic-arch-fallback.h:1115:1: note: in expansion of macro 'BUILD_BUG_ON'
1115 | BUILD_BUG_ON(1) // Fallback fence omitting duplicate arch_atomic_fetch_andnot().
| ^~~~~~~~~~~~
>> include/linux/compiler_types.h:369:9: error: expected identifier or '(' before 'do'
369 | do { \
| ^~
include/linux/compiler_types.h:385:9: note: in expansion of macro '__compiletime_assert'
385 | __compiletime_assert(condition, msg, prefix, suffix)
| ^~~~~~~~~~~~~~~~~~~~
include/linux/compiler_types.h:397:9: note: in expansion of macro '_compiletime_assert'
397 | _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/build_bug.h:50:9: note: in expansion of macro 'BUILD_BUG_ON_MSG'
50 | BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
| ^~~~~~~~~~~~~~~~
include/linux/atomic/atomic-arch-fallback.h:2662:1: note: in expansion of macro 'BUILD_BUG_ON'
2662 | BUILD_BUG_ON(1) // Fallback acquire omitting duplicate arch_atomic64_fetch_andnot_acquire().
| ^~~~~~~~~~~~
>> include/linux/compiler_types.h:379:11: error: expected identifier or '(' before 'while'
379 | } while (0)
| ^~~~~
include/linux/compiler_types.h:385:9: note: in expansion of macro '__compiletime_assert'
385 | __compiletime_assert(condition, msg, prefix, suffix)
| ^~~~~~~~~~~~~~~~~~~~
include/linux/compiler_types.h:397:9: note: in expansion of macro '_compiletime_assert'
397 | _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/build_bug.h:50:9: note: in expansion of macro 'BUILD_BUG_ON_MSG'
50 | BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
| ^~~~~~~~~~~~~~~~
include/linux/atomic/atomic-arch-fallback.h:2662:1: note: in expansion of macro 'BUILD_BUG_ON'
2662 | BUILD_BUG_ON(1) // Fallback acquire omitting duplicate arch_atomic64_fetch_andnot_acquire().
| ^~~~~~~~~~~~
>> include/linux/compiler_types.h:379:11: error: expected identifier or '(' before 'while'
379 | } while (0)
| ^~~~~
include/linux/compiler_types.h:385:9: note: in expansion of macro '__compiletime_assert'
385 | __compiletime_assert(condition, msg, prefix, suffix)
| ^~~~~~~~~~~~~~~~~~~~
include/linux/compiler_types.h:397:9: note: in expansion of macro '_compiletime_assert'
397 | _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/build_bug.h:50:9: note: in expansion of macro 'BUILD_BUG_ON_MSG'
50 | BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
| ^~~~~~~~~~~~~~~~
include/linux/atomic/atomic-arch-fallback.h:2667:1: note: in expansion of macro 'BUILD_BUG_ON'
2667 | BUILD_BUG_ON(1) // Fallback release omitting duplicate arch_atomic64_fetch_andnot_release().
| ^~~~~~~~~~~~
>> include/linux/compiler_types.h:379:11: error: expected identifier or '(' before 'while'
379 | } while (0)
| ^~~~~
include/linux/compiler_types.h:385:9: note: in expansion of macro '__compiletime_assert'
385 | __compiletime_assert(condition, msg, prefix, suffix)
| ^~~~~~~~~~~~~~~~~~~~
include/linux/compiler_types.h:397:9: note: in expansion of macro '_compiletime_assert'
397 | _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/build_bug.h:50:9: note: in expansion of macro 'BUILD_BUG_ON_MSG'
50 | BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
| ^~~~~~~~~~~~~~~~
include/linux/atomic/atomic-arch-fallback.h:2672:1: note: in expansion of macro 'BUILD_BUG_ON'
2672 | BUILD_BUG_ON(1) // Fallback fence omitting duplicate arch_atomic64_fetch_andnot().
| ^~~~~~~~~~~~
In file included from include/linux/atomic.h:80,
from include/linux/rcupdate.h:25,
from include/linux/rculist.h:11,
from include/linux/pid.h:5,
from include/linux/sched.h:14,
from arch/alpha/kernel/asm-offsets.c:10:
include/linux/atomic/atomic-long.h: In function 'arch_atomic_long_fetch_andnot':
>> include/linux/atomic/atomic-arch-fallback.h:2673:36: error: implicit declaration of function 'arch_atomic64_fetch_andnot'; did you mean 'arch_atomic64_fetch_and'? [-Werror=implicit-function-declaration]
2673 | #define arch_atomic64_fetch_andnot arch_atomic64_fetch_andnot
| ^~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/atomic/atomic-long.h:305:16: note: in expansion of macro 'arch_atomic64_fetch_andnot'
305 | return arch_atomic64_fetch_andnot(i, v);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/atomic/atomic-long.h: In function 'arch_atomic_long_fetch_andnot_acquire':
>> include/linux/atomic/atomic-arch-fallback.h:2663:44: error: implicit declaration of function 'arch_atomic64_fetch_andnot_acquire'; did you mean 'arch_atomic64_fetch_and_acquire'? [-Werror=implicit-function-declaration]
2663 | #define arch_atomic64_fetch_andnot_acquire arch_atomic64_fetch_andnot_acquire
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/atomic/atomic-arch-fallback.h:2663:44: note: in definition of macro 'arch_atomic64_fetch_andnot_acquire'
2663 | #define arch_atomic64_fetch_andnot_acquire arch_atomic64_fetch_andnot_acquire
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/atomic/atomic-long.h: In function 'arch_atomic_long_fetch_andnot_release':
>> include/linux/atomic/atomic-arch-fallback.h:2668:44: error: implicit declaration of function 'arch_atomic64_fetch_andnot_release'; did you mean 'arch_atomic64_fetch_and_release'? [-Werror=implicit-function-declaration]
2668 | #define arch_atomic64_fetch_andnot_release arch_atomic64_fetch_andnot_release
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/atomic/atomic-arch-fallback.h:2668:44: note: in definition of macro 'arch_atomic64_fetch_andnot_release'
2668 | #define arch_atomic64_fetch_andnot_release arch_atomic64_fetch_andnot_release
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/atomic/atomic-long.h: In function 'arch_atomic_long_fetch_or_acquire':
>> include/linux/atomic/atomic-arch-fallback.h:2700:40: error: implicit declaration of function 'arch_atomic64_fetch_or_acquire'; did you mean 'arch_atomic64_fetch_xor_acquire'? [-Werror=implicit-function-declaration]
2700 | #define arch_atomic64_fetch_or_acquire arch_atomic64_fetch_or_acquire
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/atomic/atomic-long.h:341:16: note: in expansion of macro 'arch_atomic64_fetch_or_acquire'
341 | return arch_atomic64_fetch_or_acquire(i, v);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/atomic/atomic-instrumented.h: In function 'atomic_fetch_andnot':
>> include/linux/atomic/atomic-arch-fallback.h:1116:34: error: implicit declaration of function 'arch_atomic_fetch_andnot'; did you mean 'arch_atomic_fetch_and'? [-Werror=implicit-function-declaration]
1116 | #define arch_atomic_fetch_andnot arch_atomic_fetch_andnot
| ^~~~~~~~~~~~~~~~~~~~~~~~
include/linux/atomic/atomic-instrumented.h:370:16: note: in expansion of macro 'arch_atomic_fetch_andnot'
370 | return arch_atomic_fetch_andnot(i, v);
| ^~~~~~~~~~~~~~~~~~~~~~~~
include/linux/atomic/atomic-instrumented.h: In function 'atomic_fetch_andnot_acquire':
>> include/linux/atomic/atomic-arch-fallback.h:1106:42: error: implicit declaration of function 'arch_atomic_fetch_andnot_acquire'; did you mean 'arch_atomic_fetch_and_acquire'? [-Werror=implicit-function-declaration]
1106 | #define arch_atomic_fetch_andnot_acquire arch_atomic_fetch_andnot_acquire
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/atomic/atomic-instrumented.h:377:16: note: in expansion of macro 'arch_atomic_fetch_andnot_acquire'
377 | return arch_atomic_fetch_andnot_acquire(i, v);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/atomic/atomic-instrumented.h: In function 'atomic_fetch_andnot_release':
>> include/linux/atomic/atomic-arch-fallback.h:1111:42: error: implicit declaration of function 'arch_atomic_fetch_andnot_release'; did you mean 'arch_atomic_fetch_and_release'? [-Werror=implicit-function-declaration]
1111 | #define arch_atomic_fetch_andnot_release arch_atomic_fetch_andnot_release
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/atomic/atomic-instrumented.h:385:16: note: in expansion of macro 'arch_atomic_fetch_andnot_release'
385 | return arch_atomic_fetch_andnot_release(i, v);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/atomic/atomic-instrumented.h: In function 'atomic_fetch_or_acquire':
>> include/linux/atomic/atomic-arch-fallback.h:1143:38: error: implicit declaration of function 'arch_atomic_fetch_or_acquire'; did you mean 'arch_atomic_fetch_xor_acquire'? [-Werror=implicit-function-declaration]
1143 | #define arch_atomic_fetch_or_acquire arch_atomic_fetch_or_acquire
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/atomic/atomic-instrumented.h:414:16: note: in expansion of macro 'arch_atomic_fetch_or_acquire'
414 | return arch_atomic_fetch_or_acquire(i, v);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/alpha/kernel/asm-offsets.c: At top level:
arch/alpha/kernel/asm-offsets.c:15:6: warning: no previous prototype for 'foo' [-Wmissing-prototypes]
15 | void foo(void)
| ^~~
cc1: some warnings being treated as errors
make[2]: *** [scripts/Makefile.build:114: arch/alpha/kernel/asm-offsets.s] Error 1
make[2]: Target 'prepare' not remade because of errors.
make[1]: *** [Makefile:1287: prepare0] Error 2
make[1]: Target 'prepare' not remade because of errors.
make: *** [Makefile:226: __sub-make] Error 2
make: Target 'prepare' not remade because of errors.
vim +2673 include/linux/atomic/atomic-arch-fallback.h
37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 2660
37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 2661 #ifndef arch_atomic64_fetch_andnot_acquire
46be07e0c635f8 include/linux/atomic/atomic-arch-fallback.h Paul E. McKenney 2023-05-08 2662 BUILD_BUG_ON(1) // Fallback acquire omitting duplicate arch_atomic64_fetch_andnot_acquire().
37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 @2663 #define arch_atomic64_fetch_andnot_acquire arch_atomic64_fetch_andnot_acquire
37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 2664 #endif
37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 2665
37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 2666 #ifndef arch_atomic64_fetch_andnot_release
46be07e0c635f8 include/linux/atomic/atomic-arch-fallback.h Paul E. McKenney 2023-05-08 2667 BUILD_BUG_ON(1) // Fallback release omitting duplicate arch_atomic64_fetch_andnot_release().
37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 @2668 #define arch_atomic64_fetch_andnot_release arch_atomic64_fetch_andnot_release
37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 2669 #endif
37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 2670
37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 2671 #ifndef arch_atomic64_fetch_andnot
46be07e0c635f8 include/linux/atomic/atomic-arch-fallback.h Paul E. McKenney 2023-05-08 2672 BUILD_BUG_ON(1) // Fallback fence omitting duplicate arch_atomic64_fetch_andnot().
37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 @2673 #define arch_atomic64_fetch_andnot arch_atomic64_fetch_andnot
37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 2674 #endif
37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 2675
37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 2676 #endif /* arch_atomic64_fetch_andnot_relaxed */
37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 2677
37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 2678 #ifndef arch_atomic64_fetch_or_relaxed
37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 2679 #define arch_atomic64_fetch_or_acquire arch_atomic64_fetch_or
37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 2680 #define arch_atomic64_fetch_or_release arch_atomic64_fetch_or
37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 2681 #define arch_atomic64_fetch_or_relaxed arch_atomic64_fetch_or
37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 2682 #else /* arch_atomic64_fetch_or_relaxed */
37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 2683
37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 2684 #ifndef arch_atomic64_fetch_or_acquire
8148ee76cbe7ad include/linux/atomic/atomic-arch-fallback.h Paul E. McKenney 2023-05-02 2685 /**
8148ee76cbe7ad include/linux/atomic/atomic-arch-fallback.h Paul E. McKenney 2023-05-02 2686 * arch_atomic64_fetch_or_acquire - Atomic or with acquire ordering
8148ee76cbe7ad include/linux/atomic/atomic-arch-fallback.h Paul E. McKenney 2023-05-02 2687 * @i: value to OR
8148ee76cbe7ad include/linux/atomic/atomic-arch-fallback.h Paul E. McKenney 2023-05-02 2688 * @v: pointer of type atomic64_t
8148ee76cbe7ad include/linux/atomic/atomic-arch-fallback.h Paul E. McKenney 2023-05-02 2689 *
8148ee76cbe7ad include/linux/atomic/atomic-arch-fallback.h Paul E. McKenney 2023-05-02 2690 * Atomically OR @i with @v using acquire ordering.
8148ee76cbe7ad include/linux/atomic/atomic-arch-fallback.h Paul E. McKenney 2023-05-02 2691 * Return old value.
8148ee76cbe7ad include/linux/atomic/atomic-arch-fallback.h Paul E. McKenney 2023-05-02 2692 */
37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 2693 static __always_inline s64
37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 2694 arch_atomic64_fetch_or_acquire(s64 i, atomic64_t *v)
37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 2695 {
37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 2696 s64 ret = arch_atomic64_fetch_or_relaxed(i, v);
37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 2697 __atomic_acquire_fence();
37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 2698 return ret;
37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 2699 }
37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 @2700 #define arch_atomic64_fetch_or_acquire arch_atomic64_fetch_or_acquire
37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 2701 #endif
37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 2702
:::::: The code at line 2673 was first introduced by commit
:::::: 37f8173dd84936ea78000ed1cad24f8b18d48ebb locking/atomics: Flip fallbacks and instrumentation
:::::: TO: Peter Zijlstra <[email protected]>
:::::: CC: Thomas Gleixner <[email protected]>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests
On Tue, May 09, 2023 at 11:50:59AM +0800, kernel test robot wrote:
> tree: https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git dev.2023.05.08b
> head: 46be07e0c635f84a3ce3a6d2d841785872bf59c9
> commit: 46be07e0c635f84a3ce3a6d2d841785872bf59c9 [71/71] locking/atomic: Refrain from generating duplicate fallbacks
> config: alpha-allyesconfig (https://download.01.org/0day-ci/archive/20230509/[email protected]/config)
> compiler: alpha-linux-gcc (GCC) 12.1.0
> 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://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git/commit/?id=46be07e0c635f84a3ce3a6d2d841785872bf59c9
> git remote add paulmck-rcu https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git
> git fetch --no-tags paulmck-rcu dev.2023.05.08b
> git checkout 46be07e0c635f84a3ce3a6d2d841785872bf59c9
> # save the config file
> mkdir build_dir && cp config build_dir/.config
> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=alpha olddefconfig
> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=alpha prepare
>
> If you fix the issue, kindly add following tag where applicable
> | Reported-by: kernel test robot <[email protected]>
> | Link: https://lore.kernel.org/oe-kbuild-all/[email protected]/
>
> All errors (new ones prefixed by >>):
>
> scripts/genksyms/parse.y: warning: 9 shift/reduce conflicts [-Wconflicts-sr]
> scripts/genksyms/parse.y: warning: 5 reduce/reduce conflicts [-Wconflicts-rr]
> scripts/genksyms/parse.y: note: rerun with option '-Wcounterexamples' to generate conflict counterexamples
> In file included from <command-line>:
> >> include/linux/compiler_types.h:369:9: error: expected identifier or '(' before 'do'
> 369 | do { \
> | ^~
> include/linux/compiler_types.h:385:9: note: in expansion of macro '__compiletime_assert'
> 385 | __compiletime_assert(condition, msg, prefix, suffix)
> | ^~~~~~~~~~~~~~~~~~~~
> include/linux/compiler_types.h:397:9: note: in expansion of macro '_compiletime_assert'
> 397 | _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/build_bug.h:50:9: note: in expansion of macro 'BUILD_BUG_ON_MSG'
> 50 | BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
> | ^~~~~~~~~~~~~~~~
Hilarious!!!
Will fix, omitting only the kernel-doc. In this case, I am not seeing
why the earlier definition did not take, but in general, yes, the #ifdefs
might end up needing a later definition, depending on exactly what set
is supplied by the architecture at hand.
Thanx, Paul
> include/linux/atomic/atomic-arch-fallback.h:1105:1: note: in expansion of macro 'BUILD_BUG_ON'
> 1105 | BUILD_BUG_ON(1) // Fallback acquire omitting duplicate arch_atomic_fetch_andnot_acquire().
> | ^~~~~~~~~~~~
> >> include/linux/compiler_types.h:379:11: error: expected identifier or '(' before 'while'
> 379 | } while (0)
> | ^~~~~
> include/linux/compiler_types.h:385:9: note: in expansion of macro '__compiletime_assert'
> 385 | __compiletime_assert(condition, msg, prefix, suffix)
> | ^~~~~~~~~~~~~~~~~~~~
> include/linux/compiler_types.h:397:9: note: in expansion of macro '_compiletime_assert'
> 397 | _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/build_bug.h:50:9: note: in expansion of macro 'BUILD_BUG_ON_MSG'
> 50 | BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
> | ^~~~~~~~~~~~~~~~
> include/linux/atomic/atomic-arch-fallback.h:1105:1: note: in expansion of macro 'BUILD_BUG_ON'
> 1105 | BUILD_BUG_ON(1) // Fallback acquire omitting duplicate arch_atomic_fetch_andnot_acquire().
> | ^~~~~~~~~~~~
> >> include/linux/compiler_types.h:379:11: error: expected identifier or '(' before 'while'
> 379 | } while (0)
> | ^~~~~
> include/linux/compiler_types.h:385:9: note: in expansion of macro '__compiletime_assert'
> 385 | __compiletime_assert(condition, msg, prefix, suffix)
> | ^~~~~~~~~~~~~~~~~~~~
> include/linux/compiler_types.h:397:9: note: in expansion of macro '_compiletime_assert'
> 397 | _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/build_bug.h:50:9: note: in expansion of macro 'BUILD_BUG_ON_MSG'
> 50 | BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
> | ^~~~~~~~~~~~~~~~
> include/linux/atomic/atomic-arch-fallback.h:1110:1: note: in expansion of macro 'BUILD_BUG_ON'
> 1110 | BUILD_BUG_ON(1) // Fallback release omitting duplicate arch_atomic_fetch_andnot_release().
> | ^~~~~~~~~~~~
> >> include/linux/compiler_types.h:379:11: error: expected identifier or '(' before 'while'
> 379 | } while (0)
> | ^~~~~
> include/linux/compiler_types.h:385:9: note: in expansion of macro '__compiletime_assert'
> 385 | __compiletime_assert(condition, msg, prefix, suffix)
> | ^~~~~~~~~~~~~~~~~~~~
> include/linux/compiler_types.h:397:9: note: in expansion of macro '_compiletime_assert'
> 397 | _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/build_bug.h:50:9: note: in expansion of macro 'BUILD_BUG_ON_MSG'
> 50 | BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
> | ^~~~~~~~~~~~~~~~
> include/linux/atomic/atomic-arch-fallback.h:1115:1: note: in expansion of macro 'BUILD_BUG_ON'
> 1115 | BUILD_BUG_ON(1) // Fallback fence omitting duplicate arch_atomic_fetch_andnot().
> | ^~~~~~~~~~~~
> >> include/linux/compiler_types.h:369:9: error: expected identifier or '(' before 'do'
> 369 | do { \
> | ^~
> include/linux/compiler_types.h:385:9: note: in expansion of macro '__compiletime_assert'
> 385 | __compiletime_assert(condition, msg, prefix, suffix)
> | ^~~~~~~~~~~~~~~~~~~~
> include/linux/compiler_types.h:397:9: note: in expansion of macro '_compiletime_assert'
> 397 | _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/build_bug.h:50:9: note: in expansion of macro 'BUILD_BUG_ON_MSG'
> 50 | BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
> | ^~~~~~~~~~~~~~~~
> include/linux/atomic/atomic-arch-fallback.h:2662:1: note: in expansion of macro 'BUILD_BUG_ON'
> 2662 | BUILD_BUG_ON(1) // Fallback acquire omitting duplicate arch_atomic64_fetch_andnot_acquire().
> | ^~~~~~~~~~~~
> >> include/linux/compiler_types.h:379:11: error: expected identifier or '(' before 'while'
> 379 | } while (0)
> | ^~~~~
> include/linux/compiler_types.h:385:9: note: in expansion of macro '__compiletime_assert'
> 385 | __compiletime_assert(condition, msg, prefix, suffix)
> | ^~~~~~~~~~~~~~~~~~~~
> include/linux/compiler_types.h:397:9: note: in expansion of macro '_compiletime_assert'
> 397 | _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/build_bug.h:50:9: note: in expansion of macro 'BUILD_BUG_ON_MSG'
> 50 | BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
> | ^~~~~~~~~~~~~~~~
> include/linux/atomic/atomic-arch-fallback.h:2662:1: note: in expansion of macro 'BUILD_BUG_ON'
> 2662 | BUILD_BUG_ON(1) // Fallback acquire omitting duplicate arch_atomic64_fetch_andnot_acquire().
> | ^~~~~~~~~~~~
> >> include/linux/compiler_types.h:379:11: error: expected identifier or '(' before 'while'
> 379 | } while (0)
> | ^~~~~
> include/linux/compiler_types.h:385:9: note: in expansion of macro '__compiletime_assert'
> 385 | __compiletime_assert(condition, msg, prefix, suffix)
> | ^~~~~~~~~~~~~~~~~~~~
> include/linux/compiler_types.h:397:9: note: in expansion of macro '_compiletime_assert'
> 397 | _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/build_bug.h:50:9: note: in expansion of macro 'BUILD_BUG_ON_MSG'
> 50 | BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
> | ^~~~~~~~~~~~~~~~
> include/linux/atomic/atomic-arch-fallback.h:2667:1: note: in expansion of macro 'BUILD_BUG_ON'
> 2667 | BUILD_BUG_ON(1) // Fallback release omitting duplicate arch_atomic64_fetch_andnot_release().
> | ^~~~~~~~~~~~
> >> include/linux/compiler_types.h:379:11: error: expected identifier or '(' before 'while'
> 379 | } while (0)
> | ^~~~~
> include/linux/compiler_types.h:385:9: note: in expansion of macro '__compiletime_assert'
> 385 | __compiletime_assert(condition, msg, prefix, suffix)
> | ^~~~~~~~~~~~~~~~~~~~
> include/linux/compiler_types.h:397:9: note: in expansion of macro '_compiletime_assert'
> 397 | _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/build_bug.h:50:9: note: in expansion of macro 'BUILD_BUG_ON_MSG'
> 50 | BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
> | ^~~~~~~~~~~~~~~~
> include/linux/atomic/atomic-arch-fallback.h:2672:1: note: in expansion of macro 'BUILD_BUG_ON'
> 2672 | BUILD_BUG_ON(1) // Fallback fence omitting duplicate arch_atomic64_fetch_andnot().
> | ^~~~~~~~~~~~
> In file included from include/linux/atomic.h:80,
> from include/linux/rcupdate.h:25,
> from include/linux/rculist.h:11,
> from include/linux/pid.h:5,
> from include/linux/sched.h:14,
> from arch/alpha/kernel/asm-offsets.c:10:
> include/linux/atomic/atomic-long.h: In function 'arch_atomic_long_fetch_andnot':
> >> include/linux/atomic/atomic-arch-fallback.h:2673:36: error: implicit declaration of function 'arch_atomic64_fetch_andnot'; did you mean 'arch_atomic64_fetch_and'? [-Werror=implicit-function-declaration]
> 2673 | #define arch_atomic64_fetch_andnot arch_atomic64_fetch_andnot
> | ^~~~~~~~~~~~~~~~~~~~~~~~~~
> include/linux/atomic/atomic-long.h:305:16: note: in expansion of macro 'arch_atomic64_fetch_andnot'
> 305 | return arch_atomic64_fetch_andnot(i, v);
> | ^~~~~~~~~~~~~~~~~~~~~~~~~~
> include/linux/atomic/atomic-long.h: In function 'arch_atomic_long_fetch_andnot_acquire':
> >> include/linux/atomic/atomic-arch-fallback.h:2663:44: error: implicit declaration of function 'arch_atomic64_fetch_andnot_acquire'; did you mean 'arch_atomic64_fetch_and_acquire'? [-Werror=implicit-function-declaration]
> 2663 | #define arch_atomic64_fetch_andnot_acquire arch_atomic64_fetch_andnot_acquire
> | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> include/linux/atomic/atomic-arch-fallback.h:2663:44: note: in definition of macro 'arch_atomic64_fetch_andnot_acquire'
> 2663 | #define arch_atomic64_fetch_andnot_acquire arch_atomic64_fetch_andnot_acquire
> | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> include/linux/atomic/atomic-long.h: In function 'arch_atomic_long_fetch_andnot_release':
> >> include/linux/atomic/atomic-arch-fallback.h:2668:44: error: implicit declaration of function 'arch_atomic64_fetch_andnot_release'; did you mean 'arch_atomic64_fetch_and_release'? [-Werror=implicit-function-declaration]
> 2668 | #define arch_atomic64_fetch_andnot_release arch_atomic64_fetch_andnot_release
> | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> include/linux/atomic/atomic-arch-fallback.h:2668:44: note: in definition of macro 'arch_atomic64_fetch_andnot_release'
> 2668 | #define arch_atomic64_fetch_andnot_release arch_atomic64_fetch_andnot_release
> | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> include/linux/atomic/atomic-long.h: In function 'arch_atomic_long_fetch_or_acquire':
> >> include/linux/atomic/atomic-arch-fallback.h:2700:40: error: implicit declaration of function 'arch_atomic64_fetch_or_acquire'; did you mean 'arch_atomic64_fetch_xor_acquire'? [-Werror=implicit-function-declaration]
> 2700 | #define arch_atomic64_fetch_or_acquire arch_atomic64_fetch_or_acquire
> | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> include/linux/atomic/atomic-long.h:341:16: note: in expansion of macro 'arch_atomic64_fetch_or_acquire'
> 341 | return arch_atomic64_fetch_or_acquire(i, v);
> | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> include/linux/atomic/atomic-instrumented.h: In function 'atomic_fetch_andnot':
> >> include/linux/atomic/atomic-arch-fallback.h:1116:34: error: implicit declaration of function 'arch_atomic_fetch_andnot'; did you mean 'arch_atomic_fetch_and'? [-Werror=implicit-function-declaration]
> 1116 | #define arch_atomic_fetch_andnot arch_atomic_fetch_andnot
> | ^~~~~~~~~~~~~~~~~~~~~~~~
> include/linux/atomic/atomic-instrumented.h:370:16: note: in expansion of macro 'arch_atomic_fetch_andnot'
> 370 | return arch_atomic_fetch_andnot(i, v);
> | ^~~~~~~~~~~~~~~~~~~~~~~~
> include/linux/atomic/atomic-instrumented.h: In function 'atomic_fetch_andnot_acquire':
> >> include/linux/atomic/atomic-arch-fallback.h:1106:42: error: implicit declaration of function 'arch_atomic_fetch_andnot_acquire'; did you mean 'arch_atomic_fetch_and_acquire'? [-Werror=implicit-function-declaration]
> 1106 | #define arch_atomic_fetch_andnot_acquire arch_atomic_fetch_andnot_acquire
> | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> include/linux/atomic/atomic-instrumented.h:377:16: note: in expansion of macro 'arch_atomic_fetch_andnot_acquire'
> 377 | return arch_atomic_fetch_andnot_acquire(i, v);
> | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> include/linux/atomic/atomic-instrumented.h: In function 'atomic_fetch_andnot_release':
> >> include/linux/atomic/atomic-arch-fallback.h:1111:42: error: implicit declaration of function 'arch_atomic_fetch_andnot_release'; did you mean 'arch_atomic_fetch_and_release'? [-Werror=implicit-function-declaration]
> 1111 | #define arch_atomic_fetch_andnot_release arch_atomic_fetch_andnot_release
> | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> include/linux/atomic/atomic-instrumented.h:385:16: note: in expansion of macro 'arch_atomic_fetch_andnot_release'
> 385 | return arch_atomic_fetch_andnot_release(i, v);
> | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> include/linux/atomic/atomic-instrumented.h: In function 'atomic_fetch_or_acquire':
> >> include/linux/atomic/atomic-arch-fallback.h:1143:38: error: implicit declaration of function 'arch_atomic_fetch_or_acquire'; did you mean 'arch_atomic_fetch_xor_acquire'? [-Werror=implicit-function-declaration]
> 1143 | #define arch_atomic_fetch_or_acquire arch_atomic_fetch_or_acquire
> | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
> include/linux/atomic/atomic-instrumented.h:414:16: note: in expansion of macro 'arch_atomic_fetch_or_acquire'
> 414 | return arch_atomic_fetch_or_acquire(i, v);
> | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
> arch/alpha/kernel/asm-offsets.c: At top level:
> arch/alpha/kernel/asm-offsets.c:15:6: warning: no previous prototype for 'foo' [-Wmissing-prototypes]
> 15 | void foo(void)
> | ^~~
> cc1: some warnings being treated as errors
> make[2]: *** [scripts/Makefile.build:114: arch/alpha/kernel/asm-offsets.s] Error 1
> make[2]: Target 'prepare' not remade because of errors.
> make[1]: *** [Makefile:1287: prepare0] Error 2
> make[1]: Target 'prepare' not remade because of errors.
> make: *** [Makefile:226: __sub-make] Error 2
> make: Target 'prepare' not remade because of errors.
>
>
> vim +2673 include/linux/atomic/atomic-arch-fallback.h
>
> 37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 2660
> 37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 2661 #ifndef arch_atomic64_fetch_andnot_acquire
> 46be07e0c635f8 include/linux/atomic/atomic-arch-fallback.h Paul E. McKenney 2023-05-08 2662 BUILD_BUG_ON(1) // Fallback acquire omitting duplicate arch_atomic64_fetch_andnot_acquire().
> 37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 @2663 #define arch_atomic64_fetch_andnot_acquire arch_atomic64_fetch_andnot_acquire
> 37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 2664 #endif
> 37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 2665
> 37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 2666 #ifndef arch_atomic64_fetch_andnot_release
> 46be07e0c635f8 include/linux/atomic/atomic-arch-fallback.h Paul E. McKenney 2023-05-08 2667 BUILD_BUG_ON(1) // Fallback release omitting duplicate arch_atomic64_fetch_andnot_release().
> 37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 @2668 #define arch_atomic64_fetch_andnot_release arch_atomic64_fetch_andnot_release
> 37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 2669 #endif
> 37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 2670
> 37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 2671 #ifndef arch_atomic64_fetch_andnot
> 46be07e0c635f8 include/linux/atomic/atomic-arch-fallback.h Paul E. McKenney 2023-05-08 2672 BUILD_BUG_ON(1) // Fallback fence omitting duplicate arch_atomic64_fetch_andnot().
> 37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 @2673 #define arch_atomic64_fetch_andnot arch_atomic64_fetch_andnot
> 37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 2674 #endif
> 37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 2675
> 37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 2676 #endif /* arch_atomic64_fetch_andnot_relaxed */
> 37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 2677
> 37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 2678 #ifndef arch_atomic64_fetch_or_relaxed
> 37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 2679 #define arch_atomic64_fetch_or_acquire arch_atomic64_fetch_or
> 37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 2680 #define arch_atomic64_fetch_or_release arch_atomic64_fetch_or
> 37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 2681 #define arch_atomic64_fetch_or_relaxed arch_atomic64_fetch_or
> 37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 2682 #else /* arch_atomic64_fetch_or_relaxed */
> 37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 2683
> 37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 2684 #ifndef arch_atomic64_fetch_or_acquire
> 8148ee76cbe7ad include/linux/atomic/atomic-arch-fallback.h Paul E. McKenney 2023-05-02 2685 /**
> 8148ee76cbe7ad include/linux/atomic/atomic-arch-fallback.h Paul E. McKenney 2023-05-02 2686 * arch_atomic64_fetch_or_acquire - Atomic or with acquire ordering
> 8148ee76cbe7ad include/linux/atomic/atomic-arch-fallback.h Paul E. McKenney 2023-05-02 2687 * @i: value to OR
> 8148ee76cbe7ad include/linux/atomic/atomic-arch-fallback.h Paul E. McKenney 2023-05-02 2688 * @v: pointer of type atomic64_t
> 8148ee76cbe7ad include/linux/atomic/atomic-arch-fallback.h Paul E. McKenney 2023-05-02 2689 *
> 8148ee76cbe7ad include/linux/atomic/atomic-arch-fallback.h Paul E. McKenney 2023-05-02 2690 * Atomically OR @i with @v using acquire ordering.
> 8148ee76cbe7ad include/linux/atomic/atomic-arch-fallback.h Paul E. McKenney 2023-05-02 2691 * Return old value.
> 8148ee76cbe7ad include/linux/atomic/atomic-arch-fallback.h Paul E. McKenney 2023-05-02 2692 */
> 37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 2693 static __always_inline s64
> 37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 2694 arch_atomic64_fetch_or_acquire(s64 i, atomic64_t *v)
> 37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 2695 {
> 37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 2696 s64 ret = arch_atomic64_fetch_or_relaxed(i, v);
> 37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 2697 __atomic_acquire_fence();
> 37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 2698 return ret;
> 37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 2699 }
> 37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 @2700 #define arch_atomic64_fetch_or_acquire arch_atomic64_fetch_or_acquire
> 37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 2701 #endif
> 37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 2702
>
> :::::: The code at line 2673 was first introduced by commit
> :::::: 37f8173dd84936ea78000ed1cad24f8b18d48ebb locking/atomics: Flip fallbacks and instrumentation
>
> :::::: TO: Peter Zijlstra <[email protected]>
> :::::: CC: Thomas Gleixner <[email protected]>
>
> --
> 0-DAY CI Kernel Test Service
> https://github.com/intel/lkp-tests