Messages in this thread | | | Date | Tue, 27 Aug 2019 08:06:26 +0800 | From | kbuild test robot <> | Subject | Re: sched,time: Allow better constprop/DCE for schedule_timeout() |
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Hi Peter,
I love your patch! Yet something to improve:
[auto build test ERROR on linus/master] [cannot apply to v5.3-rc6 next-20190826] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
url: https://github.com/0day-ci/linux/commits/Peter-Zijlstra/sched-time-Allow-better-constprop-DCE-for-schedule_timeout/20190827-061612 config: um-x86_64_defconfig (attached as .config) compiler: gcc-7 (Debian 7.4.0-10) 7.4.0 reproduce: # save the attached .config to linux build tree make ARCH=um SUBARCH=x86_64
If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp@intel.com>
All errors (new ones prefixed by >>):
In file included from arch/x86/um/shared/sysdep/kernel-offsets.h:3:0, from arch/um/kernel/asm-offsets.c:1: include/linux/sched.h: In function 'schedule_timeout': >> include/linux/sched.h:222:3: error: implicit declaration of function 'schedule'; did you mean 'schedule_work'? [-Werror=implicit-function-declaration] schedule(); ^~~~~~~~ schedule_work include/linux/sched.h: At top level: include/linux/sched.h:233:17: warning: conflicting types for 'schedule' asmlinkage void schedule(void); ^~~~~~~~ include/linux/sched.h:222:3: note: previous implicit declaration of 'schedule' was here schedule(); ^~~~~~~~ cc1: some warnings being treated as errors make[2]: *** [arch/um/kernel/asm-offsets.s] Error 1 make[2]: Target '__build' not remade because of errors. make[1]: *** [prepare0] Error 2 make[1]: Target 'prepare' not remade because of errors. make: *** [sub-make] Error 2 8 real 6 user 4 sys 130.06% cpu make prepare
vim +222 include/linux/sched.h
218 219 static inline long schedule_timeout(long timeout) 220 { 221 if (__builtin_constant_p(timeout) && timeout == MAX_SCHEDULE_TIMEOUT) { > 222 schedule(); 223 return timeout; 224 } 225 226 return __schedule_timeout(timeout); 227 } 228
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