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[PATCH] x86-64: Auto compute __NR_syscall_max at compile time

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No need to maintain it anymore

Signed-off-by: Andi Kleen <ak@suse.de>
This commit is contained in:
Andi Kleen 2007-05-02 19:27:18 +02:00 committed by Andi Kleen
parent 2f3c30e6a8
commit 57a4f91ae5
3 changed files with 11 additions and 2 deletions
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10
arch/x86_64/kernel/asm-offsets.c
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@ -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;
}

1
arch/x86_64/kernel/syscall.c
View file

@ -3,6 +3,7 @@
#include <linux/linkage.h>
#include <linux/sys.h>
#include <linux/cache.h>
#include <asm/asm-offsets.h>
#define __NO_STUBS

2
include/asm-x86_64/unistd.h
View file

@ -620,8 +620,6 @@ __SYSCALL(__NR_vmsplice, sys_vmsplice)
#define __NR_move_pages 279
__SYSCALL(__NR_move_pages, sys_move_pages)
#define __NR_syscall_max __NR_move_pages
#ifndef __NO_STUBS
#define __ARCH_WANT_OLD_READDIR
#define __ARCH_WANT_OLD_STAT