The following commit has been merged into the x86/entry branch of tip: Commit-ID: 44fe4895f47cbe9f4692e1d3cdc2ef8352f4d88e Gitweb: https://git.kernel.org/tip/44fe4895f47cbe9f4692e1d3cdc2ef8352f4d88e Author: Masahiro Yamada <masahiroy@xxxxxxxxxx> AuthorDate: Mon, 17 May 2021 16:38:11 +09:00 Committer: Thomas Gleixner <tglx@xxxxxxxxxxxxx> CommitterDate: Thu, 20 May 2021 15:03:59 +02:00 x86/syscalls: Stop filling syscall arrays with *_sys_ni_syscall This is a follow-up cleanup after switching to the generic syscalltbl.sh. The old x86 specific script skipped non-existing syscalls. So, the generated syscalls_64.h, for example, had a big hole in the syscall numbers 335-423 range. That is why there exists [0 ... __NR_*_syscall_max] = &__*_sys_ni_cyscall. The new script, scripts/syscalltbl.sh automatically fills holes with __SYSCALL(<nr>, sys_ni_syscall), hence such ugly code can go away. The designated initializers, '[nr] =' are also unneeded. Also, there is no need to give __NR_*_syscall_max+1 because the array size is implied by the number of syscalls in the generated headers. Hence, there is no need to include <asm/unistd.h>, either. Signed-off-by: Masahiro Yamada <masahiroy@xxxxxxxxxx> Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Link: https://lore.kernel.org/r/20210517073815.97426-4-masahiroy@xxxxxxxxxx --- arch/x86/entry/syscall_32.c | 10 ++-------- arch/x86/entry/syscall_64.c | 10 ++-------- arch/x86/entry/syscall_x32.c | 10 ++-------- arch/x86/um/sys_call_table_32.c | 6 ------ arch/x86/um/sys_call_table_64.c | 6 ------ 5 files changed, 6 insertions(+), 36 deletions(-) diff --git a/arch/x86/entry/syscall_32.c b/arch/x86/entry/syscall_32.c index 70bf46e..8cfc9bc 100644 --- a/arch/x86/entry/syscall_32.c +++ b/arch/x86/entry/syscall_32.c @@ -5,7 +5,6 @@ #include <linux/sys.h> #include <linux/cache.h> #include <linux/syscalls.h> -#include <asm/unistd.h> #include <asm/syscall.h> #ifdef CONFIG_IA32_EMULATION @@ -19,13 +18,8 @@ #include <asm/syscalls_32.h> #undef __SYSCALL -#define __SYSCALL(nr, sym) [nr] = __ia32_##sym, +#define __SYSCALL(nr, sym) __ia32_##sym, -__visible const sys_call_ptr_t ia32_sys_call_table[__NR_ia32_syscall_max+1] = { - /* - * Smells like a compiler bug -- it doesn't work - * when the & below is removed. - */ - [0 ... __NR_ia32_syscall_max] = &__ia32_sys_ni_syscall, +__visible const sys_call_ptr_t ia32_sys_call_table[] = { #include <asm/syscalls_32.h> }; diff --git a/arch/x86/entry/syscall_64.c b/arch/x86/entry/syscall_64.c index 82670bb..be120ee 100644 --- a/arch/x86/entry/syscall_64.c +++ b/arch/x86/entry/syscall_64.c @@ -5,20 +5,14 @@ #include <linux/sys.h> #include <linux/cache.h> #include <linux/syscalls.h> -#include <asm/unistd.h> #include <asm/syscall.h> #define __SYSCALL(nr, sym) extern long __x64_##sym(const struct pt_regs *); #include <asm/syscalls_64.h> #undef __SYSCALL -#define __SYSCALL(nr, sym) [nr] = __x64_##sym, +#define __SYSCALL(nr, sym) __x64_##sym, -asmlinkage const sys_call_ptr_t sys_call_table[__NR_syscall_max+1] = { - /* - * Smells like a compiler bug -- it doesn't work - * when the & below is removed. - */ - [0 ... __NR_syscall_max] = &__x64_sys_ni_syscall, +asmlinkage const sys_call_ptr_t sys_call_table[] = { #include <asm/syscalls_64.h> }; diff --git a/arch/x86/entry/syscall_x32.c b/arch/x86/entry/syscall_x32.c index 6d2ef88..bdd0e03 100644 --- a/arch/x86/entry/syscall_x32.c +++ b/arch/x86/entry/syscall_x32.c @@ -5,20 +5,14 @@ #include <linux/sys.h> #include <linux/cache.h> #include <linux/syscalls.h> -#include <asm/unistd.h> #include <asm/syscall.h> #define __SYSCALL(nr, sym) extern long __x64_##sym(const struct pt_regs *); #include <asm/syscalls_x32.h> #undef __SYSCALL -#define __SYSCALL(nr, sym) [nr] = __x64_##sym, +#define __SYSCALL(nr, sym) __x64_##sym, -asmlinkage const sys_call_ptr_t x32_sys_call_table[__NR_x32_syscall_max+1] = { - /* - * Smells like a compiler bug -- it doesn't work - * when the & below is removed. - */ - [0 ... __NR_x32_syscall_max] = &__x64_sys_ni_syscall, +asmlinkage const sys_call_ptr_t x32_sys_call_table[] = { #include <asm/syscalls_x32.h> }; diff --git a/arch/x86/um/sys_call_table_32.c b/arch/x86/um/sys_call_table_32.c index e83619c..f832310 100644 --- a/arch/x86/um/sys_call_table_32.c +++ b/arch/x86/um/sys_call_table_32.c @@ -7,7 +7,6 @@ #include <linux/linkage.h> #include <linux/sys.h> #include <linux/cache.h> -#include <asm/unistd.h> #include <asm/syscall.h> #define __NO_STUBS @@ -37,11 +36,6 @@ extern asmlinkage long sys_ni_syscall(unsigned long, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long); const sys_call_ptr_t sys_call_table[] ____cacheline_aligned = { - /* - * Smells like a compiler bug -- it doesn't work - * when the & below is removed. - */ - [0 ... __NR_syscall_max] = &sys_ni_syscall, #include <asm/syscalls_32.h> }; diff --git a/arch/x86/um/sys_call_table_64.c b/arch/x86/um/sys_call_table_64.c index 6fb75af..5ed665d 100644 --- a/arch/x86/um/sys_call_table_64.c +++ b/arch/x86/um/sys_call_table_64.c @@ -7,7 +7,6 @@ #include <linux/linkage.h> #include <linux/sys.h> #include <linux/cache.h> -#include <asm/unistd.h> #include <asm/syscall.h> #define __NO_STUBS @@ -45,11 +44,6 @@ extern asmlinkage long sys_ni_syscall(unsigned long, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long); const sys_call_ptr_t sys_call_table[] ____cacheline_aligned = { - /* - * Smells like a compiler bug -- it doesn't work - * when the & below is removed. - */ - [0 ... __NR_syscall_max] = &sys_ni_syscall, #include <asm/syscalls_64.h> };
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