linux/arch/xtensa
Firoz Khan a86067f587 xtensa: add __NR_syscalls along with __NR_syscall_count
__NR_syscall_count macro holds the number of system call
exist in xtensa architecture. We have to change the value
of __NR_syscall_count, if we add or delete a system call.

One of the patch in this patch series has a script which
will generate a uapi header based on syscall.tbl file.
The syscall.tbl file contains the total number of system
calls information. So we have two option to update __NR-
_syscall_count value.

1. Update __NR_syscall_count in asm/unistd.h manually by
   counting the no.of system calls. No need to update __NR-
   _syscall_count until we either add a new system call or
   delete existing system call.

2. We can keep this feature it above mentioned script,
   that will count the number of syscalls and keep it in
   a generated file. In this case we don't need to expli-
   citly update __NR_syscall_count in asm/unistd.h file.

The 2nd option will be the recommended one. For that, I
added the __NR_syscalls macro in uapi/asm/unistd.h.
The macro __NR_syscalls also added for making the name
convention same across all architecture. While __NR_syscalls
isn't strictly part of the uapi, having it as part of the
generated header to simplifies the implementation. We also
need to enclose this macro with #ifdef __KERNEL__ to avoid
side effects.

Signed-off-by: Firoz Khan <firoz.khan@linaro.org>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
[Max: Drop __NR_syscall_count completely, use __NR_syscalls instead]
2018-12-02 23:45:21 -08:00
..
boot xtensa: add NOTES section to the linker script 2018-10-29 19:02:08 -07:00
configs xtensa: drop unused {CONFIG,PLATFORM}_DEFAULT_MEM_SIZE 2018-08-20 12:27:52 -07:00
include xtensa: add __NR_syscalls along with __NR_syscall_count 2018-12-02 23:45:21 -08:00
kernel xtensa: add __NR_syscalls along with __NR_syscall_count 2018-12-02 23:45:21 -08:00
lib xtensa: add support for KASAN 2017-12-16 22:37:12 -08:00
mm Xtensa fixes and cleanups for v4.20: 2018-11-01 14:32:43 -07:00
oprofile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
platforms memblock: stop using implicit alignment to SMP_CACHE_BYTES 2018-10-31 08:54:16 -07:00
variants xtensa: add test_kc705_be variant 2018-08-20 12:34:45 -07:00
Kconfig Xtensa fixes and cleanups for v4.20: 2018-11-01 14:32:43 -07:00
Kconfig.debug Kconfig: consolidate the "Kernel hacking" menu 2018-08-02 08:06:48 +09:00
Makefile Devicetree updates for 4.20: 2018-10-26 12:09:58 -07:00