diff options
Diffstat (limited to 'arch/x86/include/asm/vgtod.h')
| -rw-r--r-- | arch/x86/include/asm/vgtod.h | 26 |
1 files changed, 0 insertions, 26 deletions
diff --git a/arch/x86/include/asm/vgtod.h b/arch/x86/include/asm/vgtod.h index 4e81ea920722..056a61c8c5c7 100644 --- a/arch/x86/include/asm/vgtod.h +++ b/arch/x86/include/asm/vgtod.h @@ -77,30 +77,4 @@ static inline void gtod_write_end(struct vsyscall_gtod_data *s) ++s->seq; } -#ifdef CONFIG_X86_64 - -#define VGETCPU_CPU_MASK 0xfff - -static inline unsigned int __getcpu(void) -{ - unsigned int p; - - /* - * Load CPU (and node) number from GDT. LSL is faster than RDTSCP - * and works on all CPUs. This is volatile so that it orders - * correctly with respect to barrier() and to keep GCC from cleverly - * hoisting it out of the calling function. - * - * If RDPID is available, use it. - */ - alternative_io ("lsl %[seg],%[p]", - ".byte 0xf3,0x0f,0xc7,0xf8", /* RDPID %eax/rax */ - X86_FEATURE_RDPID, - [p] "=a" (p), [seg] "r" (__CPU_NUMBER_SEG)); - - return p; -} - -#endif /* CONFIG_X86_64 */ - #endif /* _ASM_X86_VGTOD_H */ |