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v0.5.1
https://github.com/torvalds/linux
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Tip revision: 6f0c0580b70c89094b3422ba81118c7b959c7556 authored by Linus Torvalds on 20 October 2012, 19:11:32 UTC
Linux 3.7-rc2
Tip revision: 6f0c058
unistd.h
#include <uapi/asm-generic/unistd.h>

/*
 * These are required system calls, we should
 * invert the logic eventually and let them
 * be selected by default.
 */
#if __BITS_PER_LONG == 32
#define __ARCH_WANT_STAT64
#define __ARCH_WANT_SYS_LLSEEK
#endif
#define __ARCH_WANT_SYS_RT_SIGACTION
#define __ARCH_WANT_SYS_RT_SIGSUSPEND
#define __ARCH_WANT_COMPAT_SYS_RT_SIGSUSPEND

/*
 * "Conditional" syscalls
 *
 * What we want is __attribute__((weak,alias("sys_ni_syscall"))),
 * but it doesn't work on all toolchains, so we just do it by hand
 */
#ifndef cond_syscall
#define cond_syscall(x) asm(".weak\t" #x "\n\t.set\t" #x ",sys_ni_syscall")
#endif
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