From 2f72d4f6a29cf84c40fc05c76020b347b4774393 Mon Sep 17 00:00:00 2001 From: Chris Zankel Date: Tue, 23 Oct 2012 20:17:05 -0700 Subject: [PATCH] xtensa: allow multi-inclusion for uapi/unistd.h Xtensa implements a method that allows to generate a arbitrary output for each system call by defining the __SYSCALL(number, function, num_args). This usually requires to include uapi/unistd.h twice. Instead of removing the guard agains multiple inclusion entirely, allow to include unistd.h again only if __SYSCALL is defined. Note that __SYSCALL gets always undefined at the end of the file. Signed-off-by: Chris Zankel --- arch/xtensa/include/asm/unistd.h | 14 ++++---------- arch/xtensa/include/uapi/asm/unistd.h | 14 +++----------- arch/xtensa/kernel/syscall.c | 7 +++---- 3 files changed, 10 insertions(+), 25 deletions(-) diff --git a/arch/xtensa/include/asm/unistd.h b/arch/xtensa/include/asm/unistd.h index 9ef1c31..d9fa52d 100644 --- a/arch/xtensa/include/asm/unistd.h +++ b/arch/xtensa/include/asm/unistd.h @@ -1,16 +1,8 @@ -/* - * include/asm-xtensa/unistd.h - * - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * - * Copyright (C) 2001 - 2005 Tensilica Inc. - */ +#ifndef _XTENSA_UNISTD_H +#define _XTENSA_UNISTD_H #include - /* * "Conditional" syscalls * @@ -37,3 +29,5 @@ #define __IGNORE_mmap /* use mmap2 */ #define __IGNORE_vfork /* use clone */ #define __IGNORE_fadvise64 /* use fadvise64_64 */ + +#endif /* _XTENSA_UNISTD_H */ diff --git a/arch/xtensa/include/uapi/asm/unistd.h b/arch/xtensa/include/uapi/asm/unistd.h index 479abae..1fd157f 100644 --- a/arch/xtensa/include/uapi/asm/unistd.h +++ b/arch/xtensa/include/uapi/asm/unistd.h @@ -1,14 +1,4 @@ -/* - * include/asm-xtensa/unistd.h - * - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * - * Copyright (C) 2001 - 2012 Tensilica Inc. - */ - -#ifndef _UAPI_XTENSA_UNISTD_H +#if !defined(_UAPI_XTENSA_UNISTD_H) || defined(__SYSCALL) #define _UAPI_XTENSA_UNISTD_H #ifndef __SYSCALL @@ -759,4 +749,6 @@ __SYSCALL(331, sys_kcmp, 5) #define SYS_XTENSA_COUNT 5 /* count */ +#undef __SYSCALL + #endif /* _UAPI_XTENSA_UNISTD_H */ diff --git a/arch/xtensa/kernel/syscall.c b/arch/xtensa/kernel/syscall.c index a5c01e7..5702065f 100644 --- a/arch/xtensa/kernel/syscall.c +++ b/arch/xtensa/kernel/syscall.c @@ -32,10 +32,8 @@ typedef void (*syscall_t)(void); syscall_t sys_call_table[__NR_syscall_count] /* FIXME __cacheline_aligned */= { [0 ... __NR_syscall_count - 1] = (syscall_t)&sys_ni_syscall, -#undef __SYSCALL #define __SYSCALL(nr,symbol,nargs) [ nr ] = (syscall_t)symbol, -#undef __KERNEL_SYSCALLS__ -#include +#include }; asmlinkage long xtensa_shmat(int shmid, char __user *shmaddr, int shmflg) @@ -49,7 +47,8 @@ asmlinkage long xtensa_shmat(int shmid, char __user *shmaddr, int shmflg) return (long)ret; } -asmlinkage long xtensa_fadvise64_64(int fd, int advice, unsigned long long offset, unsigned long long len) +asmlinkage long xtensa_fadvise64_64(int fd, int advice, + unsigned long long offset, unsigned long long len) { return sys_fadvise64_64(fd, offset, len, advice); } -- 2.7.4