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authorAndi Kleen <ak@suse.de>2007-05-02 19:27:18 +0200
committerAndi Kleen <andi@basil.nowhere.org>2007-05-02 19:27:18 +0200
commit57a4f91ae5571edd7c0428285d8df16bb8bf5f40 (patch)
tree9e0ec8bf06c8ec44b4fb6f6219f1cfeb8f605156 /arch/x86_64
parent2f3c30e6a886ddaf65cb74df82c03245050ff0aa (diff)
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[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>
Diffstat (limited to 'arch/x86_64')
-rw-r--r--arch/x86_64/kernel/asm-offsets.c10
-rw-r--r--arch/x86_64/kernel/syscall.c1
2 files changed, 11 insertions, 0 deletions
diff --git a/arch/x86_64/kernel/asm-offsets.c b/arch/x86_64/kernel/asm-offsets.c
index 96687e2..778953b 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 213fd6a..63d592c 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