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ARC: Add guard macro to uapi/asm/unistd.h

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Chen originally proposed this as "right thing to do" however I
actually ran into this when building perf tools. Some of the utils
include unistd.h as well as linux/unistd.h. Since -I includes kernel
headers too, we end up including the ARC unistd.h twice, leading to
redefinition nwarnings.

------------------>8-------------------
    CC bench/sched-pipe.o
In file included from ~/kernel/arch/arc/include/uapi/asm/unistd.h:21:0,
                 from ~/kernel/include/uapi/linux/unistd.h:7,
                 from bench/sched-pipe.c:24:
~/kernel/include/uapi/asm-generic/unistd.h:889:0: error: "__NR_fcntl64"
redefined [-Werror]
 #define __NR_fcntl64 __NR3264_fcntl
 ^
In file included from
~/gnu/arc-linux-uclibc/sys-include/sys/syscall.h:24:0,
                 from bench/../perf.h:112,
                 from bench/sched-pipe.c:13:
~/gnu/arc-linux-uclibc/include/bits/sysnum.h:761:0: note: this is the
location of the previous definition
------------------>8-------------------

Verified that make headers_install works fine with this.

Suggested-by: Chen Gang <gang.chen.5i5j@gmail.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Cc: David Howells <dhowells@redhat.com>
This commit is contained in:
Vineet Gupta 2013-11-21 15:34:16 +05:30
parent f06d19e460
commit 97bc386fc1
1 changed files with 5 additions and 0 deletions
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5
arch/arc/include/uapi/asm/unistd.h
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@ -8,6 +8,9 @@
/******** no-legacy-syscalls-ABI *******/
#ifndef _UAPI_ASM_ARC_UNISTD_H
#define _UAPI_ASM_ARC_UNISTD_H
#define __ARCH_WANT_SYS_EXECVE
#define __ARCH_WANT_SYS_CLONE
#define __ARCH_WANT_SYS_VFORK
@ -32,3 +35,5 @@ __SYSCALL(__NR_arc_gettls, sys_arc_gettls)
/* Generic syscall (fs/filesystems.c - lost in asm-generic/unistd.h */
#define __NR_sysfs (__NR_arch_specific_syscall + 3)
__SYSCALL(__NR_sysfs, sys_sysfs)
#endif