2017-11-27 22:46 GMT+08:00 Arnd Bergmann <arnd@xxxxxxxx>: > On Mon, Nov 27, 2017 at 1:28 PM, Greentime Hu <green.hu@xxxxxxxxx> wrote: > >> diff --git a/arch/nds32/include/asm/syscalls.h b/arch/nds32/include/asm/syscalls.h >> new file mode 100644 >> index 0000000..741ccdc >> --- /dev/null >> +++ b/arch/nds32/include/asm/syscalls.h >> @@ -0,0 +1,27 @@ >> +/* >> + * Copyright (C) 2005-2017 Andes Technology Corporation >> + * >> + * This program is free software; you can redistribute it and/or modify >> + * it under the terms of the GNU General Public License version 2 as >> + * published by the Free Software Foundation. >> + * >> + * This program is distributed in the hope that it will be useful, >> + * but WITHOUT ANY WARRANTY; without even the implied warranty of >> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the >> + * GNU General Public License for more details. >> + * >> + * You should have received a copy of the GNU General Public License >> + * along with this program. If not, see <http://www.gnu.org/licenses/>. >> + */ >> + >> +#ifndef __ASM_NDS32_SYSCALLS_H >> +#define __ASM_NDS32_SYSCALLS_H >> + >> +int sys_cacheflush(unsigned long addr, unsigned long len, unsigned int op); >> +long sys_fadvise64_64_wrapper(int fd, int advice, loff_t offset, loff_t len); >> +asmlinkage int sys_syscall(void); >> +asmlinkage int sys_rt_sigreturn_wrapper(void); > > You mentioned that sys_syscall() should be removed in this version. > Sorry, I will remove it in next version patch. > By convention, all syscall declarations should start with 'asmlinkage long', > even though this has no effect in your architecture. > Thanks. I will modify it in next version patch. >> diff --git a/arch/nds32/include/uapi/asm/unistd.h b/arch/nds32/include/uapi/asm/unistd.h >> new file mode 100644 >> index 0000000..2bad1e7 >> --- /dev/null >> +++ b/arch/nds32/include/uapi/asm/unistd.h > >> + >> +#define __ARCH_WANT_RENAMEAT >> +#define __ARCH_WANT_SYSCALL_OFF_T > > These two should not be here. > Thanks. But, I don't know I should move these two macro to which file. In asm-generic/unistd.h, these two are used to decide whether relative syscall number is defined or not. Therefore, I put these two macros here in order that these two definitions are available in user space. >> +#define __ARCH_WANT_SYNC_FILE_RANGE2 > > This one is fine though > >> +/* Use the standard ABI for syscalls */ >> +#include <asm-generic/unistd.h> >> + >> +__SYSCALL(__NR_fadvise64_64, sys_fadvise64_64_wrapper) >> +__SYSCALL(__NR_rt_sigreturn, sys_rt_sigreturn_wrapper) > > I think you are overriding the array assignment here, this may cause a > compiler warning when building with "make C=1 V=1" since you have > the same index assigned to two pointers. A better way to do this > is to override the name: > > #define sys_rt_sigreturn sys_rt_sigreturn_wrapper > #define sys_fadvise64_64 sys_fadvise64_64_wrapper > #include <asm-generic/unistd.h> > Thanks, I will follow your suggestion to modify it in the next version patch. > > Arnd Vincent -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
