From: Andi Kleen <[email protected]> LTO doesn't like the assembler aliasing used for SYSCALL_ALIAS. Replace it with C aliasing. Also mark the only user visible.
Signed-off-by: Andi Kleen <[email protected]> --- include/linux/linkage.h | 6 ++---- kernel/time/posix-stubs.c | 2 +- 2 files changed, 3 insertions(+), 5 deletions(-) diff --git a/include/linux/linkage.h b/include/linux/linkage.h index f68db9e450eb..24fb6468b1a5 100644 --- a/include/linux/linkage.h +++ b/include/linux/linkage.h @@ -30,10 +30,8 @@ #endif #ifndef SYSCALL_ALIAS -#define SYSCALL_ALIAS(alias, name) asm( \ - ".globl " VMLINUX_SYMBOL_STR(alias) "\n\t" \ - ".set " VMLINUX_SYMBOL_STR(alias) "," \ - VMLINUX_SYMBOL_STR(name)) +#define SYSCALL_ALIAS(a, name) \ + __visible typeof(a) a __attribute__((alias(__stringify(name)))) #endif #define __page_aligned_data __section(.data..page_aligned) __aligned(PAGE_SIZE) diff --git a/kernel/time/posix-stubs.c b/kernel/time/posix-stubs.c index b258bee13b02..5e36cb75f3be 100644 --- a/kernel/time/posix-stubs.c +++ b/kernel/time/posix-stubs.c @@ -19,7 +19,7 @@ #include <linux/posix-timers.h> #include <linux/compat.h> -asmlinkage long sys_ni_posix_timers(void) +__visible asmlinkage long sys_ni_posix_timers(void) { pr_err_once("process %d (%s) attempted a POSIX timer syscall " "while CONFIG_POSIX_TIMERS is not set\n", -- 2.13.6
