kevin/linux
1
Fork 0
Code

loongarch: convert to generic syscall table

Browse Source 
The uapi/asm/unistd_64.h and asm/syscall_table_64.h headers can now be
generated from scripts/syscall.tbl, which makes this consistent with
the other architectures that have their own syscall.tbl.

Unlike the other architectures using the asm-generic header, loongarch
uses none of the deprecated system calls at the moment.

Both the user visible side of asm/unistd.h and the internal syscall
table in the kernel should have the same effective contents after this.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Arnd Bergmann 2024-04-23 17:41:56 +02:00
parent 36d69c2975
commit 26a3b85bac
6 changed files with 12 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
arch/loongarch/include/asm/Kbuild
View File

@ -1,4 +1,5 @@
# SPDX-License-Identifier: GPL-2.0
syscall-y += syscall_table_64.h
generated-y += orc_hash.h
generic-y += mcs_spinlock.h

2
arch/loongarch/include/asm/unistd.h
View File

@ -8,4 +8,6 @@
#include <uapi/asm/unistd.h>
#define __ARCH_WANT_SYS_CLONE
#define NR_syscalls (__NR_syscalls)

2
arch/loongarch/include/uapi/asm/Kbuild
View File

@ -1,2 +1,4 @@
# SPDX-License-Identifier: GPL-2.0
syscall-y += unistd_64.h
generic-y += kvm_para.h

3
arch/loongarch/include/uapi/asm/unistd.h
View File

@ -1,4 +1,3 @@
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
#define __ARCH_WANT_SYS_CLONE
#include <asm-generic/unistd.h>
#include <asm/unistd_64.h>

4
arch/loongarch/kernel/Makefile.syscalls Normal file
View File

@ -0,0 +1,4 @@
# SPDX-License-Identifier: GPL-2.0
# No special ABIs on loongarch so far
syscall_abis_64 +=

3
arch/loongarch/kernel/syscall.c
View File

@ -20,6 +20,7 @@
#undef __SYSCALL
#define __SYSCALL(nr, call) [nr] = (call),
#define __SYSCALL_WITH_COMPAT(nr, native, compat) __SYSCALL(nr, native)
SYSCALL_DEFINE6(mmap, unsigned long, addr, unsigned long, len, unsigned long,
prot, unsigned long, flags, unsigned long, fd, unsigned long, offset)
@ -32,7 +33,7 @@ SYSCALL_DEFINE6(mmap, unsigned long, addr, unsigned long, len, unsigned long,
void *sys_call_table[__NR_syscalls] = {
[0 ... __NR_syscalls - 1] = sys_ni_syscall,
#include <asm/unistd.h>
#include <asm/syscall_table_64.h>
};
typedef long (*sys_call_fn)(unsigned long, unsigned long,