They are only used in the respective source files. No point in exposing them.
Signed-off-by: Thomas Gleixner <[email protected]> --- arch/x86/entry/syscall_32.c | 2 +- arch/x86/entry/syscall_64.c | 10 ++++++---- arch/x86/include/asm/syscall.h | 8 -------- 3 files changed, 7 insertions(+), 13 deletions(-) --- a/arch/x86/entry/syscall_32.c +++ b/arch/x86/entry/syscall_32.c @@ -41,7 +41,7 @@ const sys_call_ptr_t sys_call_table[] = #endif #define __SYSCALL(nr, sym) case nr: return __ia32_##sym(regs); -long ia32_sys_call(const struct pt_regs *regs, unsigned int nr) +static noinline long ia32_sys_call(const struct pt_regs *regs, unsigned int nr) { switch (nr) { #include <asm/syscalls_32.h> --- a/arch/x86/entry/syscall_64.c +++ b/arch/x86/entry/syscall_64.c @@ -32,7 +32,7 @@ const sys_call_ptr_t sys_call_table[] = #undef __SYSCALL #define __SYSCALL(nr, sym) case nr: return __x64_##sym(regs); -long x64_sys_call(const struct pt_regs *regs, unsigned int nr) +static noinline long x64_sys_call(const struct pt_regs *regs, unsigned int nr) { switch (nr) { #include <asm/syscalls_64.h> @@ -40,15 +40,17 @@ long x64_sys_call(const struct pt_regs * } } -#ifdef CONFIG_X86_X32_ABI -long x32_sys_call(const struct pt_regs *regs, unsigned int nr) +static noinline long x32_sys_call(const struct pt_regs *regs, unsigned int nr) { +#ifdef CONFIG_X86_X32_ABI switch (nr) { #include <asm/syscalls_x32.h> default: return __x64_sys_ni_syscall(regs); } -} +#else + return -ENOSYS; #endif +} static __always_inline bool do_syscall_x64(struct pt_regs *regs, int nr) { --- a/arch/x86/include/asm/syscall.h +++ b/arch/x86/include/asm/syscall.h @@ -21,14 +21,6 @@ typedef long (*sys_call_ptr_t)(const str extern const sys_call_ptr_t sys_call_table[]; /* - * These may not exist, but still put the prototypes in so we - * can use IS_ENABLED(). - */ -extern long ia32_sys_call(const struct pt_regs *, unsigned int nr); -extern long x32_sys_call(const struct pt_regs *, unsigned int nr); -extern long x64_sys_call(const struct pt_regs *, unsigned int nr); - -/* * Only the low 32 bits of orig_ax are meaningful, so we return int. * This importantly ignores the high bits on 64-bit, so comparisons * sign-extend the low 32 bits.
