linux-kernel - [PATCH 30/40] UAPI: Fix x86_64 system call count and generation [ver #3]

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Message-ID: <20110728155405.16618.5376.stgit@warthog.procyon.org.uk>
Date:	Thu, 28 Jul 2011 16:54:05 +0100
From:	David Howells <dhowells@...hat.com>
To:	torvalds@...l.org
Cc:	linux-kernel@...r.kernel.org, linux-kbuild@...r.kernel.org,
	David Howells <dhowells@...hat.com>
Subject: [PATCH 30/40] UAPI: Fix x86_64 system call count and generation [ver
 #3]

The x86_64 system call count and system call pointer table are generated by
#undef'ing the guard on asm/unistd.h and reincluding it with the __SYSCALL()
macro suitably set.

To achieve this once the header has been split, the UAPI header guard must also
be #undef'd.

Signed-off-by: David Howells <dhowells@...hat.com>
---

 arch/x86/kernel/asm-offsets_64.c |    1 +
 arch/x86/kernel/syscall_64.c     |    2 ++
 2 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/arch/x86/kernel/asm-offsets_64.c b/arch/x86/kernel/asm-offsets_64.c
index e72a119..8cad3e3 100644
--- a/arch/x86/kernel/asm-offsets_64.c
+++ b/arch/x86/kernel/asm-offsets_64.c
@@ -3,6 +3,7 @@
 #define __NO_STUBS 1
 #undef __SYSCALL
 #undef _ASM_X86_UNISTD_64_H
+#undef _UAPI_ASM_X86_UNISTD_64_H
 #define __SYSCALL(nr, sym) [nr] = 1,
 static char syscalls[] = {
 #include <asm/unistd.h>
diff --git a/arch/x86/kernel/syscall_64.c b/arch/x86/kernel/syscall_64.c
index de87d60..b659abc 100644
--- a/arch/x86/kernel/syscall_64.c
+++ b/arch/x86/kernel/syscall_64.c
@@ -9,11 +9,13 @@
 
 #define __SYSCALL(nr, sym) extern asmlinkage void sym(void) ;
 #undef _ASM_X86_UNISTD_64_H
+#undef _UAPI_ASM_X86_UNISTD_64_H
 #include <asm/unistd_64.h>
 
 #undef __SYSCALL
 #define __SYSCALL(nr, sym) [nr] = sym,
 #undef _ASM_X86_UNISTD_64_H
+#undef _UAPI_ASM_X86_UNISTD_64_H
 
 typedef void (*sys_call_ptr_t)(void);
 

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