Messages in this thread | | | Date | Fri, 4 Feb 2022 00:09:22 +0800 | From | kernel test robot <> | Subject | Re: [PATCH] atomics: fix atomic64_{read_acquire,set_release} fallbacks |
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Hi Mark,
I love your patch! Yet something to improve:
[auto build test ERROR on linux/master] [also build test ERROR on soc/for-next linus/master v5.17-rc2 next-20220203] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch]
url: https://github.com/0day-ci/linux/commits/Mark-Rutland/atomics-fix-atomic64_-read_acquire-set_release-fallbacks/20220203-224037 base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 2c271fe77d52a0555161926c232cd5bc07178b39 config: um-i386_defconfig (https://download.01.org/0day-ci/archive/20220203/202202032312.7YDqjour-lkp@intel.com/config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://github.com/0day-ci/linux/commit/a4f59a24830e45bbd94645639aae50597b148388 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Mark-Rutland/atomics-fix-atomic64_-read_acquire-set_release-fallbacks/20220203-224037 git checkout a4f59a24830e45bbd94645639aae50597b148388 # save the config file to linux build tree mkdir build_dir make W=1 O=build_dir ARCH=um SUBARCH=i386 prepare
If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@intel.com>
All errors (new ones prefixed by >>):
arch/x86/um/user-offsets.c:18:6: warning: no previous prototype for 'foo' [-Wmissing-prototypes] 18 | void foo(void) | ^~~ 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/x86/um/shared/sysdep/kernel-offsets.h:3, from arch/um/kernel/asm-offsets.c:1: include/linux/atomic/atomic-arch-fallback.h: In function 'arch_atomic64_read_acquire': >> include/linux/atomic/atomic-arch-fallback.h:1280:26: error: passing argument 1 of 'arch_atomic_read' from incompatible pointer type [-Werror=incompatible-pointer-types] 1280 | ret = arch_atomic_read(v); | ^ | | | const atomic64_t * {aka const struct <anonymous> *} In file included from include/linux/atomic.h:7, 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/x86/um/shared/sysdep/kernel-offsets.h:3, from arch/um/kernel/asm-offsets.c:1: arch/x86/include/asm/atomic.h:23:61: note: expected 'const atomic_t *' {aka 'const struct <anonymous> *'} but argument is of type 'const atomic64_t *' {aka 'const struct <anonymous> *'} 23 | static __always_inline int arch_atomic_read(const atomic_t *v) | ~~~~~~~~~~~~~~~~^ 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/x86/um/shared/sysdep/kernel-offsets.h:3, from arch/um/kernel/asm-offsets.c:1: include/linux/atomic/atomic-arch-fallback.h: In function 'arch_atomic64_set_release': >> include/linux/atomic/atomic-arch-fallback.h:1297:19: error: passing argument 1 of 'arch_atomic_set' from incompatible pointer type [-Werror=incompatible-pointer-types] 1297 | arch_atomic_set(v, i); | ^ | | | atomic64_t * {aka struct <anonymous> *} In file included from include/linux/atomic.h:7, 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/x86/um/shared/sysdep/kernel-offsets.h:3, from arch/um/kernel/asm-offsets.c:1: arch/x86/include/asm/atomic.h:39:55: note: expected 'atomic_t *' {aka 'struct <anonymous> *'} but argument is of type 'atomic64_t *' {aka 'struct <anonymous> *'} 39 | static __always_inline void arch_atomic_set(atomic_t *v, int i) | ~~~~~~~~~~^ In file included from arch/um/kernel/asm-offsets.c:1: arch/x86/um/shared/sysdep/kernel-offsets.h: At top level: arch/x86/um/shared/sysdep/kernel-offsets.h:9:6: warning: no previous prototype for 'foo' [-Wmissing-prototypes] 9 | void foo(void) | ^~~ cc1: some warnings being treated as errors make[2]: *** [scripts/Makefile.build:121: arch/um/kernel/asm-offsets.s] Error 1 make[2]: Target '__build' not remade because of errors. make[1]: *** [Makefile:1191: prepare0] Error 2 make[1]: Target 'prepare' not remade because of errors. make: *** [Makefile:219: __sub-make] Error 2 make: Target 'prepare' not remade because of errors.
vim +/arch_atomic_read +1280 include/linux/atomic/atomic-arch-fallback.h
1270 1271 #ifndef arch_atomic64_read_acquire 1272 static __always_inline s64 1273 arch_atomic64_read_acquire(const atomic64_t *v) 1274 { 1275 s64 ret; 1276 1277 if (__native_word(atomic64_t)) { 1278 ret = smp_load_acquire(&(v)->counter); 1279 } else { > 1280 ret = arch_atomic_read(v); 1281 __atomic_acquire_fence(); 1282 } 1283 1284 return ret; 1285 } 1286 #define arch_atomic64_read_acquire arch_atomic64_read_acquire 1287 #endif 1288 1289 #ifndef arch_atomic64_set_release 1290 static __always_inline void 1291 arch_atomic64_set_release(atomic64_t *v, s64 i) 1292 { 1293 if (__native_word(atomic64_t)) { 1294 smp_store_release(&(v)->counter, i); 1295 } else { 1296 __atomic_release_fence(); > 1297 arch_atomic_set(v, i); 1298 } 1299 } 1300 #define arch_atomic64_set_release arch_atomic64_set_release 1301 #endif 1302
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