signal/timer/event: signalfd wire up x86 arches

This patch wires the signalfd system call to the x86 architectures.
Signed-off-by: Davide Libenzi <davidel@xmailserver.org>
Cc: Michael Kerrisk <mtk-manpages@gmx.net>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

arch/i386/kernel/syscall_table.S

@@ -320,3 +320,4 @@ ENTRY(sys_call_table)
 	.long sys_getcpu
 	.long sys_epoll_pwait
 	.long sys_utimensat		/* 320 */
+	.long sys_signalfd

arch/x86_64/ia32/ia32entry.S

@@ -716,4 +716,5 @@ ia32_sys_call_table:
 	.quad sys_getcpu
 	.quad sys_epoll_pwait
 	.quad compat_sys_utimensat	/* 320 */
+	.quad sys_signalfd
 ia32_syscall_end:		

include/asm-i386/unistd.h

@@ -326,10 +326,11 @@
 #define __NR_getcpu		318
 #define __NR_epoll_pwait	319
 #define __NR_utimensat		320
+#define __NR_signalfd		321
 
 #ifdef __KERNEL__
 
-#define NR_syscalls 321
+#define NR_syscalls 322
 
 #define __ARCH_WANT_IPC_PARSE_VERSION
 #define __ARCH_WANT_OLD_READDIR

include/asm-x86_64/unistd.h

@@ -624,6 +624,8 @@ __SYSCALL(__NR_utimensat, sys_utimensat)
 #define __IGNORE_getcpu		/* implemented as a vsyscall */
 #define __NR_epoll_pwait	281
 __SYSCALL(__NR_epoll_pwait, sys_epoll_pwait)
+#define __NR_signalfd		282
+__SYSCALL(__NR_signalfd, sys_signalfd)
 
 #ifndef __NO_STUBS
 #define __ARCH_WANT_OLD_READDIR