From 57a4f91ae5571edd7c0428285d8df16bb8bf5f40 Mon Sep 17 00:00:00 2001
From: Andi Kleen <ak@suse.de>
Date: Wed, 2 May 2007 19:27:18 +0200
Subject: [PATCH] x86-64: Auto compute __NR_syscall_max at compile time

No need to maintain it anymore

Signed-off-by: Andi Kleen <ak@suse.de>
---
 arch/x86_64/kernel/asm-offsets.c | 10 ++++++++++
 arch/x86_64/kernel/syscall.c     |  1 +
 2 files changed, 11 insertions(+)

(limited to 'arch/x86_64/kernel')

diff --git a/arch/x86_64/kernel/asm-offsets.c b/arch/x86_64/kernel/asm-offsets.c
index 96687e2beb2c..778953bc636c 100644
--- a/arch/x86_64/kernel/asm-offsets.c
+++ b/arch/x86_64/kernel/asm-offsets.c
@@ -21,6 +21,14 @@
 
 #define BLANK() asm volatile("\n->" : : )
 
+#define __NO_STUBS 1
+#undef __SYSCALL
+#undef _ASM_X86_64_UNISTD_H_
+#define __SYSCALL(nr, sym) [nr] = 1,
+static char syscalls[] = {
+#include <asm/unistd.h>
+};
+
 int main(void)
 {
 #define ENTRY(entry) DEFINE(tsk_ ## entry, offsetof(struct task_struct, entry))
@@ -71,5 +79,7 @@ int main(void)
 	DEFINE(TSS_ist, offsetof(struct tss_struct, ist));
 	BLANK();
 	DEFINE(crypto_tfm_ctx_offset, offsetof(struct crypto_tfm, __crt_ctx));
+	BLANK();
+	DEFINE(__NR_syscall_max, sizeof(syscalls) - 1);
 	return 0;
 }
diff --git a/arch/x86_64/kernel/syscall.c b/arch/x86_64/kernel/syscall.c
index 213fd6ab789d..63d592c276cc 100644
--- a/arch/x86_64/kernel/syscall.c
+++ b/arch/x86_64/kernel/syscall.c
@@ -3,6 +3,7 @@
 #include <linux/linkage.h>
 #include <linux/sys.h>
 #include <linux/cache.h>
+#include <asm/asm-offsets.h>
 
 #define __NO_STUBS
 
-- 
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